Stata Analysis of NYC Leading Pedestrian Interval Signal (LPIs)¶
25 quarters from 2012 to 2018
12,987 intersections
2,689 intersections received LPIs intervention
[40]:
use "..\working_data\analytical_file_panel_qt.dta",clear
[3]:
codebook intersection_id
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
intersection_id (unlabeled)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
type: numeric (int)
range: [1,13214] units: 1
unique values: 12,987 missing .: 0/324,675
mean: 6654.33
std. dev: 3797.56
percentiles: 10% 25% 50% 75% 90%
1380 3385 6669 9944 11909
[4]:
codebook intersection_id if flag_LPIS_ever == 1
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
intersection_id (unlabeled)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
type: numeric (int)
range: [6,13176] units: 1
unique values: 2,689 missing .: 0/67,225
mean: 6080.92
std. dev: 3554.56
percentiles: 10% 25% 50% 75% 90%
1543 2868 5980 9370 11025
[5]:
codebook intersection_id if flag_school == 1
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
intersection_id (unlabeled)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
type: numeric (int)
range: [11,13128] units: 1
unique values: 676 missing .: 0/16,900
mean: 5978.72
std. dev: 3243.53
percentiles: 10% 25% 50% 75% 90%
1658 3494.5 5894.5 8157.5 10599
[6]:
codebook intersection_id if flag_priorityinters == 1
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
intersection_id (unlabeled)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
type: numeric (int)
range: [1,12885] units: 1
unique values: 219 missing .: 0/5,475
mean: 6331.31
std. dev: 3745.43
percentiles: 10% 25% 50% 75% 90%
971 3223 6363 10013 11305
[7]:
codebook intersection_id if flag_seniors == 1
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
intersection_id (unlabeled)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
type: numeric (int)
range: [1,13164] units: 1
unique values: 2,576 missing .: 0/64,400
mean: 5818.17
std. dev: 3530.98
percentiles: 10% 25% 50% 75% 90%
1337 1931.5 5947.5 8558.5 10572
Definitions¶
flag_LPIS captures the intersection at the time they became an LPIS intervention
flag_LPIS_ever captures the intersection if they EVER received LPIS intervention
[41]:
// Variables of interest
global location_var bronx brooklyn manhattan queens
global distance_var distance_to_Sch
global road_var num_traveling_lanes num_parking_lanes truck_route
global time_variant_var bike_route_tv flag_street_improv flag_left_turn
global outcome_var collision_count flag_collision personsinjured pedestriansinjured
global time_var i.quarterly
[42]:
// Time trends
// i.flag_school##i.quarterly
// i.flag_priorityinters##i.quarterly
// i.flag_seniors##i.quarterly
global time_trend i.flag_school##i.quarterly i.flag_priorityinters##i.quarterly i.flag_seniors##i.quarterly
[43]:
xtset intersection_id quarterly, quarterly
panel variable: intersection_id (strongly balanced)
time variable: quarterly, 2012q3 to 2018q3
delta: 1 quarter
Base line averages¶
[11]:
* Average number of collisions before LPIs were implemented at LPIs intersections
sum collision_count if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
collision_~t | 47,591 2.232544 2.546832 0 77
[12]:
* Average number of collisions before LPIs were implemented at LPIs intersections
sum day_collision_count if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
day_collis~t | 47,591 2.020466 2.332392 0 66
[13]:
* Average number of persons injured before LPIs were implemented at LPIs intersections
sum personsinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
personsinj~d | 47,591 .623122 1.217287 0 27
[14]:
* Average number of persons injured before LPIs were implemented at LPIs intersections
sum day_personsinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
day_pers~red | 47,591 .5438003 1.111464 0 27
[15]:
* Average number of persons injured before LPIs were implemented at LPIs intersections
sum latenight_personsinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
l~onsinjured | 47,591 .0793217 .4144775 0 11
[16]:
* Average number of pedestrians injured before LPIs were implemented at LPIs intersections
sum pedestriansinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
pedestri~red | 47,591 .1917589 .5039872 0 13
[17]:
* Average number of pedestrians injured before LPIs were implemented at LPIs intersections
sum day_pedestriansinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
day_pede~red | 47,591 .1751382 .4780367 0 13
[18]:
* Average number of pedestrians injured before LPIs were implemented at LPIs intersections
sum latenight_pedestriansinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
l~ansinjured | 47,591 .0166208 .1382699 0 4
[19]:
* Average number of cyclist injured before LPIs were implemented at LPIs intersections
sum cyclistinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
cyclistinj~d | 47,591 .0665042 .272294 0 4
[20]:
* Average number of motorist injured before LPIs were implemented at LPIs intersections
sum motoristinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
motoristin~d | 47,591 .3662247 1.011035 0 27
[21]:
* Average number of motorist injured before LPIs were implemented at LPIs intersections
sum day_motoristinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
day_moto~red | 47,591 .3088609 .9161878 0 27
[13]:
* Average number of motorist injured before LPIs were implemented at LPIs intersections
sum latenight_motoristinjured if flag_LPIS_ever == 1 & flag_LPIS == 0
Variable | Obs Mean Std. Dev. Min Max
-------------+---------------------------------------------------------
latenight_.. | 47,591 .0573638 .3781542 0 11
Hausman test¶
[6]:
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend, fe
estimates store fixed
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend, re
estimates store random
hausman fixed random
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 324,675
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0333 min = 25
between = 0.0789 avg = 25.0
overall = 0.0000 max = 25
F(100,311588) = 107.44
corr(u_i, Xb) = -0.1570 Prob > F = 0.0000
-----------------------------------------------------------------------------------------------
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1776024 .0151172 -11.75 0.000 -.2072317 -.1479731
bike_route_tv | .0269855 .0217044 1.24 0.214 -.0155546 .0695256
flag_street_improv | -.188277 .0425415 -4.43 0.000 -.2716571 -.1048969
flag_left_turn | -.7997689 .0517303 -15.46 0.000 -.9011588 -.698379
|
quarterly |
211 | -.0272238 .0215861 -1.26 0.207 -.0695319 .0150842
212 | -.1437996 .0215861 -6.66 0.000 -.1861077 -.1014916
213 | .0952777 .0215864 4.41 0.000 .0529689 .1375865
214 | -.0099912 .0215879 -0.46 0.643 -.0523029 .0323205
215 | .022502 .0215896 1.04 0.297 -.0198131 .0648171
216 | -.1372205 .0215896 -6.36 0.000 -.1795355 -.0949054
217 | .0307486 .0215924 1.42 0.154 -.0115719 .0730691
218 | .0002867 .0215957 0.01 0.989 -.0420403 .0426137
219 | .0133289 .0215971 0.62 0.537 -.0290008 .0556587
220 | -.1356572 .0215975 -6.28 0.000 -.1779877 -.0933267
221 | .0523985 .0216025 2.43 0.015 .0100581 .0947388
222 | .091027 .0216102 4.21 0.000 .0486716 .1333823
223 | .1410987 .0216175 6.53 0.000 .098729 .1834683
224 | -.087746 .0216207 -4.06 0.000 -.1301219 -.0453701
225 | -.4078028 .0216323 -18.85 0.000 -.4502015 -.3654041
226 | -.6724283 .0216545 -31.05 0.000 -.7148706 -.6299861
227 | -.645612 .0216727 -29.79 0.000 -.6880899 -.6031341
228 | -.3490299 .0216824 -16.10 0.000 -.3915268 -.306533
229 | -.0729462 .0216935 -3.36 0.001 -.1154649 -.0304276
230 | -.3202074 .0217071 -14.75 0.000 -.3627527 -.277662
231 | -.2129973 .0217205 -9.81 0.000 -.255569 -.1704257
232 | -.2692511 .0217358 -12.39 0.000 -.3118527 -.2266495
233 | -.1130946 .021766 -5.20 0.000 -.1557552 -.0704339
234 | -.254319 .0217944 -11.67 0.000 -.2970355 -.2116026
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1182385 .0847609 1.39 0.163 -.0478904 .2843674
1 212 | .0835204 .0847609 0.99 0.324 -.0826085 .2496493
1 213 | .1587193 .0847608 1.87 0.061 -.0074096 .3248481
1 214 | .0459541 .0847608 0.54 0.588 -.1201748 .2120829
1 215 | .002042 .0847609 0.02 0.981 -.1640869 .1681709
1 216 | .11072 .0847609 1.31 0.191 -.0554088 .2768489
1 217 | .002922 .084761 0.03 0.973 -.1632072 .1690511
1 218 | .0244281 .0847613 0.29 0.773 -.1417016 .1905578
1 219 | .0857961 .0847609 1.01 0.311 -.0803329 .2519251
1 220 | .139316 .0847609 1.64 0.100 -.0268131 .305445
1 221 | .0013831 .084761 0.02 0.987 -.1647461 .1675122
1 222 | .0060462 .0847613 0.07 0.943 -.1600835 .172176
1 223 | .04823 .0847626 0.57 0.569 -.1179024 .2143623
1 224 | .034811 .0847625 0.41 0.681 -.1313212 .2009431
1 225 | .1373576 .084763 1.62 0.105 -.0287754 .3034907
1 226 | .0759265 .0847681 0.90 0.370 -.0902165 .2420696
1 227 | .0679298 .0847667 0.80 0.423 -.0982106 .2340702
1 228 | .0303498 .0847698 0.36 0.720 -.1357966 .1964962
1 229 | .0271477 .0847707 0.32 0.749 -.1390005 .1932959
1 230 | -.0136784 .0847717 -0.16 0.872 -.1798285 .1524717
1 231 | .0550566 .0847714 0.65 0.516 -.1110929 .2212061
1 232 | .0484018 .0847755 0.57 0.568 -.1177559 .2145594
1 233 | -.0759146 .0847756 -0.90 0.371 -.2420724 .0902433
1 234 | -.0266903 .0847737 -0.31 0.753 -.1928444 .1394638
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2768213 .146248 -1.89 0.058 -.5634632 .0098206
1 212 | -.7644635 .146248 -5.23 0.000 -1.051105 -.4778215
1 213 | -.3837691 .146248 -2.62 0.009 -.6704111 -.0971272
1 214 | -.4429826 .1462481 -3.03 0.002 -.7296247 -.1563405
1 215 | .1814199 .1462482 1.24 0.215 -.1052224 .4680622
1 216 | -1.046841 .1462483 -7.16 0.000 -1.333484 -.7601986
1 217 | -.5362038 .1462485 -3.67 0.000 -.8228466 -.2495609
1 218 | -.4022144 .1462487 -2.75 0.006 -.6888577 -.115571
1 219 | -.3418119 .1462487 -2.34 0.019 -.6284553 -.0551685
1 220 | -1.0348 .1462487 -7.08 0.000 -1.321444 -.7481571
1 221 | -.5501796 .146249 -3.76 0.000 -.8368235 -.2635357
1 222 | -.1748565 .1462531 -1.20 0.232 -.4615084 .1117953
1 223 | -.4976802 .1462546 -3.40 0.001 -.7843351 -.2110253
1 224 | -.8337732 .1462804 -5.70 0.000 -1.120479 -.5470679
1 225 | -1.754218 .1462875 -11.99 0.000 -2.040937 -1.467498
1 226 | -2.291793 .1462879 -15.67 0.000 -2.578513 -2.005073
1 227 | -2.182984 .1463515 -14.92 0.000 -2.469829 -1.896139
1 228 | -1.663286 .1463401 -11.37 0.000 -1.950109 -1.376464
1 229 | -1.526703 .1463419 -10.43 0.000 -1.813529 -1.239877
1 230 | -1.726626 .1463615 -11.80 0.000 -2.013491 -1.439762
1 231 | -1.390512 .1463759 -9.50 0.000 -1.677405 -1.103619
1 232 | -1.702154 .146373 -11.63 0.000 -1.989041 -1.415267
1 233 | -1.436331 .1463697 -9.81 0.000 -1.723212 -1.149451
1 234 | -1.569914 .1463674 -10.73 0.000 -1.856789 -1.283038
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0112276 .0472246 0.24 0.812 -.0813312 .1037865
1 212 | -.0483955 .0472246 -1.02 0.305 -.1409544 .0441633
1 213 | -.0515704 .047225 -1.09 0.275 -.1441301 .0409892
1 214 | .0694257 .0472255 1.47 0.142 -.0231349 .1619863
1 215 | .1013443 .0472251 2.15 0.032 .0087845 .1939041
1 216 | .0360209 .0472251 0.76 0.446 -.0565389 .1285807
1 217 | .0579079 .047225 1.23 0.220 -.0346517 .1504675
1 218 | .0170646 .0472253 0.36 0.718 -.0754955 .1096248
1 219 | .0415852 .0472287 0.88 0.379 -.0509818 .1341521
1 220 | -.0611882 .0472287 -1.30 0.195 -.1537552 .0313788
1 221 | .1250521 .0472296 2.65 0.008 .0324834 .2176208
1 222 | .10313 .0472294 2.18 0.029 .0105616 .1956983
1 223 | .0702699 .0472321 1.49 0.137 -.0223036 .1628435
1 224 | -.0735621 .0472315 -1.56 0.119 -.1661345 .0190103
1 225 | -.2103285 .0472304 -4.45 0.000 -.3028988 -.1177582
1 226 | -.1955049 .0472345 -4.14 0.000 -.2880832 -.1029265
1 227 | -.156215 .0472419 -3.31 0.001 -.2488079 -.0636222
1 228 | -.1819107 .0472496 -3.85 0.000 -.2745186 -.0893029
1 229 | -.1517847 .0472675 -3.21 0.001 -.2444275 -.0591418
1 230 | -.0856614 .0472881 -1.81 0.070 -.1783448 .0070219
1 231 | -.2175487 .0472927 -4.60 0.000 -.3102411 -.1248563
1 232 | -.2530286 .0472988 -5.35 0.000 -.3457328 -.1603243
1 233 | -.1730564 .0473005 -3.66 0.000 -.2657639 -.0803488
1 234 | -.2549443 .0473015 -5.39 0.000 -.3476539 -.1622346
|
_cons | 1.840794 .0138521 132.89 0.000 1.813645 1.867944
------------------------------+----------------------------------------------------------------
sigma_u | 2.0396001
sigma_e | 1.5170324
rho | .64382286 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
F test that all u_i=0: F(12986, 311588) = 39.99 Prob > F = 0.0000
Random-effects GLS regression Number of obs = 324,675
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0333 min = 25
between = 0.0649 avg = 25.0
overall = 0.0534 max = 25
Wald chi2(103) = 11634.64
corr(u_i, X) = 0 (assumed) Prob > chi2 = 0.0000
-----------------------------------------------------------------------------------------------
collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1541534 .0150074 -10.27 0.000 -.1835673 -.1247395
bike_route_tv | .1192156 .0192894 6.18 0.000 .0814091 .1570221
flag_street_improv | -.1170945 .0414275 -2.83 0.005 -.1982909 -.035898
flag_left_turn | -.7300794 .0515112 -14.17 0.000 -.8310394 -.6291194
|
quarterly |
211 | -.0276787 .0216032 -1.28 0.200 -.0700202 .0146628
212 | -.1442547 .0216032 -6.68 0.000 -.1865962 -.1019132
213 | .0945363 .0216035 4.38 0.000 .0521942 .1368783
214 | -.0113427 .0216047 -0.53 0.600 -.0536871 .0310016
215 | .0206749 .021606 0.96 0.339 -.0216721 .0630219
216 | -.1390533 .021606 -6.44 0.000 -.1814003 -.0967063
217 | .02834 .0216082 1.31 0.190 -.0140113 .0706914
218 | -.002686 .0216109 -0.12 0.901 -.0450425 .0396705
219 | .0100903 .021612 0.47 0.641 -.0322684 .052449
220 | -.1390465 .0216124 -6.43 0.000 -.181406 -.0966869
221 | .048304 .0216166 2.23 0.025 .0059363 .0906718
222 | .0860629 .021623 3.98 0.000 .0436825 .1284433
223 | .1354114 .0216293 6.26 0.000 .0930187 .1778041
224 | -.09367 .0216325 -4.33 0.000 -.1360689 -.0512712
225 | -.4145354 .0216434 -19.15 0.000 -.4569555 -.3721152
226 | -.6804901 .0216635 -31.41 0.000 -.7229499 -.6380303
227 | -.6549284 .0216791 -30.21 0.000 -.6974187 -.6124381
228 | -.3586337 .0216887 -16.54 0.000 -.4011428 -.3161246
229 | -.082869 .0216997 -3.82 0.000 -.1253997 -.0403383
230 | -.330618 .0217132 -15.23 0.000 -.3731751 -.288061
231 | -.2239844 .0217263 -10.31 0.000 -.2665672 -.1814016
232 | -.2805337 .0217415 -12.90 0.000 -.3231462 -.2379212
233 | -.1249192 .0217713 -5.74 0.000 -.1675901 -.0822482
234 | -.2666283 .0217994 -12.23 0.000 -.3093544 -.2239022
|
1.flag_school | -.338898 .0952047 -3.56 0.000 -.5254958 -.1523002
|
flag_school#quarterly |
1 211 | .1185995 .0848283 1.40 0.162 -.047661 .2848599
1 212 | .0838836 .0848283 0.99 0.323 -.0823769 .250144
1 213 | .1585783 .0848283 1.87 0.062 -.007682 .3248387
1 214 | .0457841 .0848283 0.54 0.589 -.1204763 .2120445
1 215 | .0022981 .0848283 0.03 0.978 -.1639623 .1685585
1 216 | .1109854 .0848283 1.31 0.191 -.055275 .2772458
1 217 | .0037165 .0848284 0.04 0.965 -.1625441 .1699772
1 218 | .025724 .0848286 0.30 0.762 -.1405371 .1919851
1 219 | .086111 .0848284 1.02 0.310 -.0801496 .2523716
1 220 | .1396194 .0848284 1.65 0.100 -.0266411 .30588
1 221 | .0015782 .0848285 0.02 0.985 -.1646825 .1678389
1 222 | .0061572 .0848287 0.07 0.942 -.1601041 .1724185
1 223 | .0463384 .0848298 0.55 0.585 -.119925 .2126018
1 224 | .0328414 .0848297 0.39 0.699 -.1334218 .1991046
1 225 | .1353045 .0848302 1.60 0.111 -.0309596 .3015686
1 226 | .0727752 .0848351 0.86 0.391 -.0934986 .2390491
1 227 | .0650766 .0848339 0.77 0.443 -.1011947 .231348
1 228 | .0271244 .0848369 0.32 0.749 -.139153 .1934017
1 229 | .0238744 .0848378 0.28 0.778 -.1424047 .1901536
1 230 | -.0172748 .0848388 -0.20 0.839 -.1835558 .1490062
1 231 | .0514199 .0848385 0.61 0.544 -.1148605 .2177003
1 232 | .0443731 .0848426 0.52 0.601 -.1219153 .2106616
1 233 | -.0798382 .0848427 -0.94 0.347 -.2461268 .0864504
1 234 | -.0305681 .0848408 -0.36 0.719 -.196853 .1357169
|
1.flag_priorityinters | 4.679146 .1642698 28.48 0.000 4.357183 5.001109
|
flag_priorityinters#quarterly |
1 211 | -.276322 .1463644 -1.89 0.059 -.5631909 .0105469
1 212 | -.7639617 .1463644 -5.22 0.000 -1.050831 -.4770928
1 213 | -.3833331 .1463644 -2.62 0.009 -.670202 -.0964642
1 214 | -.4422601 .1463644 -3.02 0.003 -.7291291 -.1553911
1 215 | .1819049 .1463645 1.24 0.214 -.1049643 .4687742
1 216 | -1.046455 .1463646 -7.15 0.000 -1.333324 -.7595856
1 217 | -.5353093 .1463648 -3.66 0.000 -.822179 -.2484396
1 218 | -.4016516 .146365 -2.74 0.006 -.6885218 -.1147814
1 219 | -.3408967 .146365 -2.33 0.020 -.6277669 -.0540266
1 220 | -1.033869 .146365 -7.06 0.000 -1.320739 -.7469987
1 221 | -.5506984 .1463653 -3.76 0.000 -.8375692 -.2638277
1 222 | -.1770761 .1463693 -1.21 0.226 -.4639547 .1098025
1 223 | -.4997098 .1463708 -3.41 0.001 -.7865913 -.2128284
1 224 | -.8386023 .1463961 -5.73 0.000 -1.125533 -.5516711
1 225 | -1.760631 .1464032 -12.03 0.000 -2.047575 -1.473686
1 226 | -2.298024 .1464035 -15.70 0.000 -2.584969 -2.011078
1 227 | -2.194914 .146466 -14.99 0.000 -2.481982 -1.907845
1 228 | -1.67466 .1464548 -11.43 0.000 -1.961706 -1.387614
1 229 | -1.538135 .1464566 -10.50 0.000 -1.825184 -1.251085
1 230 | -1.739646 .146476 -11.88 0.000 -2.026733 -1.452558
1 231 | -1.404436 .1464903 -9.59 0.000 -1.691551 -1.11732
1 232 | -1.715931 .1464873 -11.71 0.000 -2.003041 -1.428821
1 233 | -1.449935 .1464842 -9.90 0.000 -1.737039 -1.162832
1 234 | -1.583557 .1464818 -10.81 0.000 -1.870656 -1.296458
|
1.flag_seniors | .5416405 .0530467 10.21 0.000 .4376708 .6456102
|
flag_seniors#quarterly |
1 211 | .0110062 .0472622 0.23 0.816 -.0816259 .1036384
1 212 | -.048626 .0472622 -1.03 0.304 -.1412582 .0440061
1 213 | -.0524068 .0472625 -1.11 0.267 -.1450396 .0402259
1 214 | .0682189 .0472628 1.44 0.149 -.0244145 .1608524
1 215 | .1003762 .0472625 2.12 0.034 .0077434 .1930091
1 216 | .035042 .0472625 0.74 0.458 -.0575909 .1276748
1 217 | .0571143 .0472625 1.21 0.227 -.0355185 .1497471
1 218 | .0159525 .0472627 0.34 0.736 -.0766808 .1085857
1 219 | .0386608 .0472655 0.82 0.413 -.0539779 .1312994
1 220 | -.0640072 .0472655 -1.35 0.176 -.156646 .0286315
1 221 | .1219444 .0472663 2.58 0.010 .0293041 .2145847
1 222 | .100077 .0472664 2.12 0.034 .0074365 .1927175
1 223 | .0662261 .0472686 1.40 0.161 -.0264186 .1588707
1 224 | -.0774483 .047268 -1.64 0.101 -.1700919 .0151952
1 225 | -.2140105 .0472671 -4.53 0.000 -.3066524 -.1213686
1 226 | -.2003621 .0472704 -4.24 0.000 -.2930104 -.1077138
1 227 | -.1626634 .0472764 -3.44 0.001 -.2553235 -.0700033
1 228 | -.189337 .0472841 -4.00 0.000 -.2820121 -.0966619
1 229 | -.1602261 .0473018 -3.39 0.001 -.252936 -.0675162
1 230 | -.0950636 .0473223 -2.01 0.045 -.1878135 -.0023136
1 231 | -.2274059 .0473268 -4.81 0.000 -.3201648 -.1346471
1 232 | -.2630807 .0473328 -5.56 0.000 -.3558512 -.1703102
1 233 | -.1833399 .0473345 -3.87 0.000 -.2761138 -.090566
1 234 | -.2652927 .0473355 -5.60 0.000 -.3580686 -.1725169
|
_cons | 1.655543 .0245007 67.57 0.000 1.607522 1.703563
------------------------------+----------------------------------------------------------------
sigma_u | 1.8698292
sigma_e | 1.5170324
rho | .60304815 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
---- Coefficients ----
| (b) (B) (b-B) sqrt(diag(V_b-V_B))
| fixed random Difference S.E.
-------------+----------------------------------------------------------------
1.flag_LPIS | -.1776024 -.1541534 -.023449 .001819
bike_route~v | .0269855 .1192156 -.0922301 .00995
flag_stree~v | -.188277 -.1170945 -.0711825 .0096715
flag_left_~n | -.7997689 -.7300794 -.0696895 .0047564
quarterly |
211 | -.0272238 -.0276787 .0004549 .
212 | -.1437996 -.1442547 .000455 .
213 | .0952777 .0945363 .0007414 .
214 | -.0099912 -.0113427 .0013516 .
215 | .022502 .0206749 .0018271 .
216 | -.1372205 -.1390533 .0018328 .
217 | .0307486 .02834 .0024086 .
218 | .0002867 -.002686 .0029727 .
219 | .0133289 .0100903 .0032387 .
220 | -.1356572 -.1390465 .0033892 .
221 | .0523985 .048304 .0040944 .
222 | .091027 .0860629 .0049641 .
223 | .1410987 .1354114 .0056872 .
224 | -.087746 -.09367 .0059241 .
225 | -.4078028 -.4145354 .0067325 .
226 | -.6724283 -.6804901 .0080617 .
227 | -.645612 -.6549284 .0093164 .
228 | -.3490299 -.3586337 .0096038 .
229 | -.0729462 -.082869 .0099227 .
230 | -.3202074 -.330618 .0104107 .
231 | -.2129973 -.2239844 .010987 .
232 | -.2692511 -.2805337 .0112826 .
233 | -.1130946 -.1249192 .0118246 .
234 | -.254319 -.2666283 .0123093 .
flag_school#|
quarterly |
1 211 | .1182385 .1185995 -.000361 .
1 212 | .0835204 .0838836 -.0003631 .
1 213 | .1587193 .1585783 .000141 .
1 214 | .0459541 .0457841 .00017 .
1 215 | .002042 .0022981 -.0002561 .
1 216 | .11072 .1109854 -.0002653 .
1 217 | .002922 .0037165 -.0007946 .
1 218 | .0244281 .025724 -.0012959 .
1 219 | .0857961 .086111 -.0003149 .
1 220 | .139316 .1396194 -.0003035 .
1 221 | .0013831 .0015782 -.0001952 .
1 222 | .0060462 .0061572 -.000111 .
1 223 | .04823 .0463384 .0018916 .
1 224 | .034811 .0328414 .0019696 .
1 225 | .1373576 .1353045 .0020532 .
1 226 | .0759265 .0727752 .0031513 .
1 227 | .0679298 .0650766 .0028531 .
1 228 | .0303498 .0271244 .0032254 .
1 229 | .0271477 .0238744 .0032733 .
1 230 | -.0136784 -.0172748 .0035964 .
1 231 | .0550566 .0514199 .0036367 .
1 232 | .0484018 .0443731 .0040286 .
1 233 | -.0759146 -.0798382 .0039236 .
1 234 | -.0266903 -.0305681 .0038777 .
flag_prior~s#|
quarterly |
1 211 | -.2768213 -.276322 -.0004993 .
1 212 | -.7644635 -.7639617 -.0005017 .
1 213 | -.3837691 -.3833331 -.0004361 .
1 214 | -.4429826 -.4422601 -.0007225 .
1 215 | .1814199 .1819049 -.0004851 .
1 216 | -1.046841 -1.046455 -.0003862 .
1 217 | -.5362038 -.5353093 -.0008944 .
1 218 | -.4022144 -.4016516 -.0005628 .
1 219 | -.3418119 -.3408967 -.0009151 .
1 220 | -1.0348 -1.033869 -.0009316 .
1 221 | -.5501796 -.5506984 .0005188 .
1 222 | -.1748565 -.1770761 .0022196 .
1 223 | -.4976802 -.4997098 .0020296 .
1 224 | -.8337732 -.8386023 .004829 .
1 225 | -1.754218 -1.760631 .0064128 .
1 226 | -2.291793 -2.298024 .0062302 .
1 227 | -2.182984 -2.194914 .0119293 .
1 228 | -1.663286 -1.67466 .0113738 .
1 229 | -1.526703 -1.538135 .0114314 .
1 230 | -1.726626 -1.739646 .0130192 .
1 231 | -1.390512 -1.404436 .0139238 .
1 232 | -1.702154 -1.715931 .0137773 .
1 233 | -1.436331 -1.449935 .0136042 .
1 234 | -1.569914 -1.583557 .0136435 .
flag_seniors#|
quarterly |
1 211 | .0112276 .0110062 .0002214 .
1 212 | -.0483955 -.048626 .0002305 .
1 213 | -.0515704 -.0524068 .0008364 .
1 214 | .0694257 .0682189 .0012067 .
1 215 | .1013443 .1003762 .0009681 .
1 216 | .0360209 .035042 .0009789 .
1 217 | .0579079 .0571143 .0007936 .
1 218 | .0170646 .0159525 .0011122 .
1 219 | .0415852 .0386608 .0029244 .
1 220 | -.0611882 -.0640072 .002819 .
1 221 | .1250521 .1219444 .0031077 .
1 222 | .10313 .100077 .003053 .
1 223 | .0702699 .0662261 .0040439 .
1 224 | -.0735621 -.0774483 .0038862 .
1 225 | -.2103285 -.2140105 .003682 .
1 226 | -.1955049 -.2003621 .0048572 .
1 227 | -.156215 -.1626634 .0064484 .
1 228 | -.1819107 -.189337 .0074263 .
1 229 | -.1517847 -.1602261 .0084415 .
1 230 | -.0856614 -.0950636 .0094021 .
1 231 | -.2175487 -.2274059 .0098572 .
1 232 | -.2530286 -.2630807 .0100521 .
1 233 | -.1730564 -.1833399 .0102835 .
1 234 | -.2549443 -.2652927 .0103485 .
------------------------------------------------------------------------------
b = consistent under Ho and Ha; obtained from xtreg
B = inconsistent under Ha, efficient under Ho; obtained from xtreg
Test: Ho: difference in coefficients not systematic
chi2(100) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= 578.75
Prob>chi2 = 0.0000
(V_b-V_B is not positive definite)
Naive Regression estimates¶
[14]:
global outcome1 collision_count
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_naive_$outcome1
cd "..\manuscripts"
poisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, vce(cluster intersection_id )
outreg2 using "$filename", word replace ctitle(poisson cluster intersection_id $outcome1)
reg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, vce(cluster intersection_id )
outreg2 using "$filename", word append ctitle(regress cluster intersection_id $outcome1)
poisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, vce(cluster intersection_id )
outreg2 using "$filename", word append ctitle(poisson cluster intersection_id $outcome2)
reg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, vce(cluster intersection_id )
outreg2 using "$filename", word append ctitle(regress cluster intersection_id $outcome2)
poisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, vce(cluster intersection_id )
outreg2 using "$filename", word append ctitle(poisson cluster intersection_id $outcome3)
reg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, vce(cluster intersection_id )
outreg2 using "$filename", word append ctitle(regress cluster intersection_id $outcome3)
erase $filename.txt
C:\Users\jerem\Box Sync\Policy Evaluation\manuscripts
Iteration 0: log pseudolikelihood = -688576.31
Iteration 1: log pseudolikelihood = -685106.58
Iteration 2: log pseudolikelihood = -685083.59
Iteration 3: log pseudolikelihood = -685083.58
Poisson regression Number of obs = 324,675
Wald chi2(103) = 6332.01
Prob > chi2 = 0.0000
Log pseudolikelihood = -685083.58 Pseudo R2 = 0.0407
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .2578853 .0252799 10.20 0.000 .2083376 .3074331
bike_route_tv | .2393679 .0219261 10.92 0.000 .1963935 .2823422
flag_street_improv | .3344673 .0737285 4.54 0.000 .1899621 .4789724
flag_left_turn | .5186243 .0607865 8.53 0.000 .3994849 .6377636
|
quarterly |
211 | -.0175376 .0113663 -1.54 0.123 -.0398151 .00474
212 | -.0911822 .0115904 -7.87 0.000 -.113899 -.0684655
213 | .0525733 .0111594 4.71 0.000 .0307013 .0744454
214 | -.0099756 .0112076 -0.89 0.373 -.0319421 .0119908
215 | .0082348 .0114581 0.72 0.472 -.0142228 .0306923
216 | -.090977 .0120812 -7.53 0.000 -.1146557 -.0672983
217 | .0105446 .0114864 0.92 0.359 -.0119684 .0330576
218 | -.0094581 .0114816 -0.82 0.410 -.0319617 .0130454
219 | -.0031848 .0116715 -0.27 0.785 -.0260604 .0196909
220 | -.0984347 .0122972 -8.00 0.000 -.1225369 -.0743326
221 | .0132302 .011914 1.11 0.267 -.0101208 .0365812
222 | .0301377 .0116433 2.59 0.010 .0073173 .0529581
223 | .0532035 .0117411 4.53 0.000 .0301913 .0762157
224 | -.0855651 .0119593 -7.15 0.000 -.109005 -.0621252
225 | -.3215356 .013437 -23.93 0.000 -.3478716 -.2951995
226 | -.570995 .0148895 -38.35 0.000 -.6001779 -.5418121
227 | -.5535095 .0153793 -35.99 0.000 -.5836524 -.5233667
228 | -.302441 .015123 -20.00 0.000 -.3320816 -.2728005
229 | -.116354 .0150084 -7.75 0.000 -.14577 -.086938
230 | -.294069 .0158985 -18.50 0.000 -.3252294 -.2629086
231 | -.2250372 .0160705 -14.00 0.000 -.2565349 -.1935395
232 | -.2704885 .015892 -17.02 0.000 -.3016362 -.2393408
233 | -.1716865 .0157216 -10.92 0.000 -.2025002 -.1408728
234 | -.2765713 .0163467 -16.92 0.000 -.3086102 -.2445324
|
1.flag_school | -.1963539 .0473851 -4.14 0.000 -.2892271 -.1034808
|
flag_school#quarterly |
1 211 | .0743411 .0454053 1.64 0.102 -.0146516 .1633339
1 212 | .0391086 .0459565 0.85 0.395 -.0509645 .1291817
1 213 | .102837 .0442261 2.33 0.020 .0161555 .1895186
1 214 | .0282483 .0454889 0.62 0.535 -.0609084 .117405
1 215 | .0068996 .0464398 0.15 0.882 -.0841207 .0979199
1 216 | .0588686 .0456164 1.29 0.197 -.0305379 .1482751
1 217 | .0080265 .0506843 0.16 0.874 -.0913129 .107366
1 218 | .0196431 .0433414 0.45 0.650 -.0653045 .1045907
1 219 | .0567409 .0440607 1.29 0.198 -.0296164 .1430983
1 220 | .076186 .0484461 1.57 0.116 -.0187667 .1711386
1 221 | .0077476 .0456738 0.17 0.865 -.0817714 .0972665
1 222 | .0129984 .0462899 0.28 0.779 -.0777282 .103725
1 223 | .0352553 .044068 0.80 0.424 -.0511164 .1216269
1 224 | -.0027105 .0456361 -0.06 0.953 -.0921556 .0867346
1 225 | .0287904 .0539444 0.53 0.594 -.0769387 .1345195
1 226 | -.1037011 .0623781 -1.66 0.096 -.2259599 .0185577
1 227 | -.1052218 .0604571 -1.74 0.082 -.2237155 .013272
1 228 | -.0794441 .0553634 -1.43 0.151 -.1879543 .0290661
1 229 | -.0346964 .051122 -0.68 0.497 -.1348937 .0655008
1 230 | -.1184121 .0542924 -2.18 0.029 -.2248233 -.0120009
1 231 | -.045704 .0541296 -0.84 0.398 -.1517961 .0603881
1 232 | -.0695674 .0517429 -1.34 0.179 -.1709816 .0318469
1 233 | -.1386149 .0542429 -2.56 0.011 -.2449291 -.0323008
1 234 | -.130966 .0508384 -2.58 0.010 -.2306074 -.0313245
|
1.flag_priorityinters | 1.266259 .0614513 20.61 0.000 1.145817 1.386701
|
flag_priorityinters#quarterly |
1 211 | -.0341003 .0405373 -0.84 0.400 -.1135519 .0453513
1 212 | -.0622749 .0423449 -1.47 0.141 -.1452694 .0207197
1 213 | -.0934241 .0408478 -2.29 0.022 -.1734843 -.0133639
1 214 | -.0727015 .0411817 -1.77 0.077 -.1534162 .0080132
1 215 | .0071576 .0384629 0.19 0.852 -.0682283 .0825435
1 216 | -.1307144 .0462858 -2.82 0.005 -.2214329 -.039996
1 217 | -.1045854 .0455556 -2.30 0.022 -.1938727 -.0152981
1 218 | -.0705215 .040836 -1.73 0.084 -.1505585 .0095156
1 219 | -.0664762 .0454904 -1.46 0.144 -.1556359 .0226834
1 220 | -.1177303 .048154 -2.44 0.014 -.2121104 -.0233502
1 221 | -.1295838 .043027 -3.01 0.003 -.2139152 -.0452523
1 222 | -.098307 .0428675 -2.29 0.022 -.1823257 -.0142882
1 223 | -.1665637 .0430663 -3.87 0.000 -.250972 -.0821554
1 224 | -.1605361 .048405 -3.32 0.001 -.2554082 -.065664
1 225 | -.1999259 .0498962 -4.01 0.000 -.2977207 -.1021311
1 226 | -.1890969 .0601256 -3.15 0.002 -.3069409 -.071253
1 227 | -.2469045 .0656768 -3.76 0.000 -.3756286 -.1181803
1 228 | -.2620017 .0624602 -4.19 0.000 -.3844214 -.1395819
1 229 | -.3534235 .0608904 -5.80 0.000 -.4727665 -.2340805
1 230 | -.3130428 .0642943 -4.87 0.000 -.4390573 -.1870283
1 231 | -.2798254 .0685566 -4.08 0.000 -.414194 -.1454569
1 232 | -.3157502 .0635667 -4.97 0.000 -.4403386 -.1911618
1 233 | -.3272246 .0610652 -5.36 0.000 -.4469102 -.2075391
1 234 | -.2830525 .0595268 -4.76 0.000 -.3997228 -.1663821
|
1.flag_seniors | .2742556 .028646 9.57 0.000 .2181105 .3304007
|
flag_seniors#quarterly |
1 211 | .0082162 .0218189 0.38 0.706 -.0345481 .0509805
1 212 | -.0009197 .021729 -0.04 0.966 -.0435077 .0416682
1 213 | -.0359071 .0221114 -1.62 0.104 -.0792446 .0074305
1 214 | .029654 .0216778 1.37 0.171 -.0128336 .0721416
1 215 | .0367673 .0217936 1.69 0.092 -.0059473 .0794819
1 216 | .036225 .0227796 1.59 0.112 -.0084223 .0808723
1 217 | .0188314 .0221813 0.85 0.396 -.0246433 .062306
1 218 | .0043923 .0215483 0.20 0.838 -.0378417 .0466263
1 219 | .0073623 .021806 0.34 0.736 -.0353766 .0501013
1 220 | -.0147029 .0235176 -0.63 0.532 -.0607966 .0313907
1 221 | .036681 .023465 1.56 0.118 -.0093096 .0826715
1 222 | .0156428 .0236674 0.66 0.509 -.0307445 .0620301
1 223 | -.0075929 .0245769 -0.31 0.757 -.0557627 .040577
1 224 | -.0374449 .0233305 -1.60 0.108 -.0831718 .008282
1 225 | -.0641164 .0262299 -2.44 0.015 -.1155262 -.0127067
1 226 | -.0033673 .0288927 -0.12 0.907 -.0599959 .0532613
1 227 | .0101581 .029846 0.34 0.734 -.0483391 .0686553
1 228 | -.0813442 .0286655 -2.84 0.005 -.1375276 -.0251609
1 229 | -.1164746 .0276352 -4.21 0.000 -.1706386 -.0623105
1 230 | -.0580702 .0289832 -2.00 0.045 -.1148762 -.0012643
1 231 | -.1551454 .0300065 -5.17 0.000 -.213957 -.0963337
1 232 | -.1720856 .0304282 -5.66 0.000 -.2317237 -.1124475
1 233 | -.1465707 .0288349 -5.08 0.000 -.203086 -.0900554
1 234 | -.1774844 .0286761 -6.19 0.000 -.2336885 -.1212804
|
_cons | .4695634 .0162412 28.91 0.000 .4377313 .5013956
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
Linear regression Number of obs = 324,675
F(103, 12986) = 47.98
Prob > F = 0.0000
R-squared = 0.0627
Root MSE = 2.4239
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .4465668 .0470017 9.50 0.000 .3544367 .5386969
bike_route_tv | .4211724 .0411806 10.23 0.000 .3404525 .5018924
flag_street_improv | .7074233 .1822488 3.88 0.000 .3501888 1.064658
flag_left_turn | 1.185702 .1758022 6.74 0.000 .8411041 1.5303
|
quarterly |
211 | -.0295871 .0192224 -1.54 0.124 -.0672658 .0080917
212 | -.1461667 .0191086 -7.65 0.000 -.1836225 -.108711
213 | .0913766 .0194905 4.69 0.000 .0531725 .1295808
214 | -.0166805 .019036 -0.88 0.381 -.0539939 .0206329
215 | .0133645 .0196575 0.68 0.497 -.025167 .051896
216 | -.1465094 .0199255 -7.35 0.000 -.1855664 -.1074524
217 | .0186163 .0197281 0.94 0.345 -.0200535 .0572862
218 | -.0151778 .0195437 -0.78 0.437 -.0534863 .0231307
219 | -.0048554 .0199401 -0.24 0.808 -.0439408 .0342301
220 | -.1578498 .0202896 -7.78 0.000 -.1976204 -.1180792
221 | .023671 .0205714 1.15 0.250 -.0166519 .0639939
222 | .0536064 .0202664 2.65 0.008 .0138813 .0933314
223 | .0961571 .0206992 4.65 0.000 .0555836 .1367305
224 | -.1383634 .0198862 -6.96 0.000 -.1773433 -.0993835
225 | -.4726814 .0203471 -23.23 0.000 -.5125646 -.4327981
226 | -.755626 .0210836 -35.84 0.000 -.796953 -.714299
227 | -.7422526 .0215969 -34.37 0.000 -.7845858 -.6999195
228 | -.4529158 .0234012 -19.35 0.000 -.4987856 -.407046
229 | -.1848681 .0245462 -7.53 0.000 -.2329823 -.136754
230 | -.4437689 .024262 -18.29 0.000 -.4913259 -.3962119
231 | -.3493721 .0251591 -13.89 0.000 -.3986876 -.3000565
232 | -.4133919 .0246653 -16.76 0.000 -.4617394 -.3650443
233 | -.2711755 .0251282 -10.79 0.000 -.3204305 -.2219204
234 | -.4242131 .025261 -16.79 0.000 -.4737283 -.3746979
|
1.flag_school | -.3321942 .0728312 -4.56 0.000 -.474954 -.1894344
|
flag_school#quarterly |
1 211 | .1201107 .071763 1.67 0.094 -.0205552 .2607767
1 212 | .085449 .068211 1.25 0.210 -.0482546 .2191527
1 213 | .1579183 .0728638 2.17 0.030 .0150945 .3007421
1 214 | .0444305 .0706395 0.63 0.529 -.0940333 .1828943
1 215 | .002986 .0720739 0.04 0.967 -.1382894 .1442614
1 216 | .1119099 .0689266 1.62 0.104 -.0231964 .2470162
1 217 | .0072744 .0785026 0.09 0.926 -.1466023 .161151
1 218 | .0318909 .0667479 0.48 0.633 -.0989448 .1627267
1 219 | .0878698 .0696917 1.26 0.207 -.0487362 .2244758
1 220 | .1410854 .0734546 1.92 0.055 -.0028964 .2850672
1 221 | .0006592 .0716847 0.01 0.993 -.1398533 .1411718
1 222 | .0027865 .0735463 0.04 0.970 -.141375 .1469481
1 223 | .0351725 .0721176 0.49 0.626 -.1061886 .1765336
1 224 | .0206812 .0677081 0.31 0.760 -.1120366 .153399
1 225 | .1197462 .0726915 1.65 0.100 -.0227398 .2622321
1 226 | .0372649 .073339 0.51 0.611 -.1064903 .18102
1 227 | .0268749 .071454 0.38 0.707 -.1131855 .1669352
1 228 | -.0209324 .0739538 -0.28 0.777 -.1658927 .1240278
1 229 | -.0257639 .0747625 -0.34 0.730 -.1723092 .1207815
1 230 | -.0744003 .0729638 -1.02 0.308 -.21742 .0686195
1 231 | -.0071523 .0749014 -0.10 0.924 -.1539701 .1396655
1 232 | -.0243195 .0714981 -0.34 0.734 -.1644662 .1158272
1 233 | -.1463863 .0755799 -1.94 0.053 -.294534 .0017613
1 234 | -.0942595 .0681849 -1.38 0.167 -.2279118 .0393928
|
1.flag_priorityinters | 4.656948 .3919617 11.88 0.000 3.888645 5.42525
|
flag_priorityinters#quarterly |
1 211 | -.2743826 .249716 -1.10 0.272 -.7638625 .2150973
1 212 | -.7619597 .2548665 -2.99 0.003 -1.261535 -.262384
1 213 | -.3836493 .2501992 -1.53 0.125 -.8740765 .1067779
1 214 | -.441438 .2498815 -1.77 0.077 -.9312424 .0483663
1 215 | .1777724 .2450309 0.73 0.468 -.3025241 .658069
1 216 | -1.053121 .27511 -3.83 0.000 -1.592377 -.513865
1 217 | -.539332 .2765782 -1.95 0.051 -1.081466 .0028018
1 218 | -.4133979 .2518765 -1.64 0.101 -.9071128 .080317
1 219 | -.3494527 .2835952 -1.23 0.218 -.905341 .2064355
1 220 | -1.042002 .2936721 -3.55 0.000 -1.617642 -.4663616
1 221 | -.571789 .2592801 -2.21 0.027 -1.080016 -.0635619
1 222 | -.2303015 .2683443 -0.86 0.391 -.7562957 .2956927
1 223 | -.5573446 .2593647 -2.15 0.032 -1.065737 -.0489517
1 224 | -.9684413 .2861348 -3.38 0.001 -1.529308 -.4075751
1 225 | -1.913467 .2825815 -6.77 0.000 -2.467368 -1.359565
1 226 | -2.456547 .3167607 -7.76 0.000 -3.077445 -1.83565
1 227 | -2.488403 .3278653 -7.59 0.000 -3.131067 -1.845739
1 228 | -1.954212 .3342412 -5.85 0.000 -2.609374 -1.29905
1 229 | -1.81949 .3344775 -5.44 0.000 -2.475115 -1.163865
1 230 | -2.066987 .3433859 -6.02 0.000 -2.740073 -1.3939
1 231 | -1.75477 .3622792 -4.84 0.000 -2.46489 -1.044649
1 232 | -2.062587 .3454255 -5.97 0.000 -2.739671 -1.385502
1 233 | -1.793304 .3324913 -5.39 0.000 -2.445036 -1.141572
1 234 | -1.924698 .3248477 -5.92 0.000 -2.561447 -1.287949
|
1.flag_seniors | .5491379 .0619118 8.87 0.000 .4277818 .6704941
|
flag_seniors#quarterly |
1 211 | .0106749 .0470188 0.23 0.820 -.0814889 .1028387
1 212 | -.0491913 .0451315 -1.09 0.276 -.1376556 .0392729
1 213 | -.054796 .0486588 -1.13 0.260 -.1501744 .0405824
1 214 | .0646244 .0474466 1.36 0.173 -.0283778 .1576266
1 215 | .0967353 .0483173 2.00 0.045 .0020262 .1914443
1 216 | .0311227 .0478893 0.65 0.516 -.0627474 .1249928
1 217 | .0513816 .0487467 1.05 0.292 -.044169 .1469322
1 218 | .0093235 .046506 0.20 0.841 -.0818351 .1004822
1 219 | .0245234 .0473942 0.52 0.605 -.0683763 .117423
1 220 | -.0754455 .0488466 -1.54 0.122 -.171192 .020301
1 221 | .1065833 .0526926 2.02 0.043 .003298 .2098686
1 222 | .0765174 .0536645 1.43 0.154 -.0286729 .1817077
1 223 | .0368115 .0562603 0.65 0.513 -.0734669 .1470899
1 224 | -.1035003 .0485935 -2.13 0.033 -.1987506 -.0082499
1 225 | -.2425244 .0499174 -4.86 0.000 -.3403698 -.1446789
1 226 | -.234475 .0511687 -4.58 0.000 -.3347731 -.1341768
1 227 | -.2101293 .0531442 -3.95 0.000 -.3142998 -.1059589
1 228 | -.2622351 .0553888 -4.73 0.000 -.3708053 -.1536648
1 229 | -.2595566 .0562734 -4.61 0.000 -.3698606 -.1492525
1 230 | -.2176332 .0562721 -3.87 0.000 -.3279349 -.1073316
1 231 | -.361329 .0584847 -6.18 0.000 -.4759676 -.2466904
1 232 | -.4020924 .0583604 -6.89 0.000 -.5164874 -.2876974
1 233 | -.3279524 .0569007 -5.76 0.000 -.439486 -.2164187
1 234 | -.4108844 .0552922 -7.43 0.000 -.5192652 -.3025037
|
_cons | 1.597432 .0268817 59.42 0.000 1.54474 1.650124
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
Iteration 0: log pseudolikelihood = -155863.31
Iteration 1: log pseudolikelihood = -155109.33
Iteration 2: log pseudolikelihood = -155094.72
Iteration 3: log pseudolikelihood = -155094.65
Iteration 4: log pseudolikelihood = -155094.65
Poisson regression Number of obs = 324,675
Wald chi2(103) = 1629.26
Prob > chi2 = 0.0000
Log pseudolikelihood = -155094.65 Pseudo R2 = 0.0215
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .3089126 .0383462 8.06 0.000 .2337554 .3840699
bike_route_tv | .3618864 .0300816 12.03 0.000 .3029275 .4208454
flag_street_improv | .357327 .0890199 4.01 0.000 .1828511 .5318028
flag_left_turn | .4485009 .1097145 4.09 0.000 .2334644 .6635375
|
quarterly |
211 | -.0978258 .0347892 -2.81 0.005 -.1660113 -.0296403
212 | -.2373744 .0356138 -6.67 0.000 -.3071761 -.1675728
213 | -.0715058 .0343735 -2.08 0.038 -.1388766 -.0041349
214 | -.0770944 .0338475 -2.28 0.023 -.1434344 -.0107545
215 | -.1356271 .034674 -3.91 0.000 -.2035868 -.0676673
216 | -.2957857 .036758 -8.05 0.000 -.3678301 -.2237413
217 | -.1161483 .0344957 -3.37 0.001 -.1837587 -.0485379
218 | -.0993713 .0346337 -2.87 0.004 -.1672521 -.0314904
219 | -.083574 .0351483 -2.38 0.017 -.1524634 -.0146845
220 | -.3246156 .0371158 -8.75 0.000 -.3973611 -.25187
221 | -.090131 .0343582 -2.62 0.009 -.1574718 -.0227902
222 | -.0547505 .0343794 -1.59 0.111 -.1221328 .0126319
223 | -.0898229 .0351417 -2.56 0.011 -.1586994 -.0209464
224 | -.2138349 .0360004 -5.94 0.000 -.2843944 -.1432755
225 | -.3767557 .0375582 -10.03 0.000 -.4503685 -.303143
226 | -.5036742 .0388724 -12.96 0.000 -.5798626 -.4274858
227 | -.5234364 .0398876 -13.12 0.000 -.6016147 -.4452582
228 | -.3480619 .0374992 -9.28 0.000 -.421559 -.2745647
229 | -.1279001 .0361292 -3.54 0.000 -.1987121 -.0570881
230 | -.3023982 .0384562 -7.86 0.000 -.377771 -.2270254
231 | -.2553909 .0377717 -6.76 0.000 -.3294221 -.1813598
232 | -.2933738 .0376671 -7.79 0.000 -.3671999 -.2195477
233 | -.2062234 .0374903 -5.50 0.000 -.2797029 -.1327438
234 | -.2430058 .0382711 -6.35 0.000 -.3180158 -.1679959
|
1.flag_school | -.163425 .1067194 -1.53 0.126 -.3725912 .0457412
|
flag_school#quarterly |
1 211 | -.1186562 .1422087 -0.83 0.404 -.3973802 .1600678
1 212 | .0231226 .1490428 0.16 0.877 -.268996 .3152412
1 213 | -.0138497 .1429266 -0.10 0.923 -.2939806 .2662812
1 214 | -.074629 .1497089 -0.50 0.618 -.3680531 .2187951
1 215 | -.2696667 .1524186 -1.77 0.077 -.5684017 .0290683
1 216 | -.1720868 .1579815 -1.09 0.276 -.4817249 .1375512
1 217 | -.0582861 .1423613 -0.41 0.682 -.3373091 .220737
1 218 | -.0693908 .1386753 -0.50 0.617 -.3411893 .2024077
1 219 | -.0023172 .1370359 -0.02 0.987 -.2709027 .2662683
1 220 | -.1174589 .1501365 -0.78 0.434 -.411721 .1768032
1 221 | .0117033 .138715 0.08 0.933 -.2601732 .2835797
1 222 | -.1183195 .1379384 -0.86 0.391 -.3886737 .1520347
1 223 | -.0379055 .1453748 -0.26 0.794 -.322835 .247024
1 224 | -.2601462 .1670144 -1.56 0.119 -.5874884 .0671961
1 225 | -.0502056 .1538724 -0.33 0.744 -.3517899 .2513787
1 226 | -.1182979 .1579331 -0.75 0.454 -.4278412 .1912453
1 227 | -.1368617 .1654197 -0.83 0.408 -.4610784 .1873549
1 228 | -.4391845 .1769747 -2.48 0.013 -.7860485 -.0923204
1 229 | -.2104935 .1567847 -1.34 0.179 -.5177858 .0967989
1 230 | -.3827546 .1563659 -2.45 0.014 -.6892262 -.0762831
1 231 | .1067591 .1342415 0.80 0.426 -.1563494 .3698675
1 232 | -.2871757 .157014 -1.83 0.067 -.5949176 .0205661
1 233 | -.4340289 .1554405 -2.79 0.005 -.7386867 -.129371
1 234 | -.0734989 .1463587 -0.50 0.616 -.3603567 .213359
|
1.flag_priorityinters | 1.365193 .1184357 11.53 0.000 1.133064 1.597323
|
flag_priorityinters#quarterly |
1 211 | -.0789371 .130009 -0.61 0.544 -.33375 .1758758
1 212 | .0388241 .1251089 0.31 0.756 -.2063849 .284033
1 213 | -.0646818 .1210788 -0.53 0.593 -.3019919 .1726282
1 214 | -.1570936 .1285673 -1.22 0.222 -.4090808 .0948936
1 215 | .017689 .11326 0.16 0.876 -.2042966 .2396746
1 216 | -.2150936 .1387446 -1.55 0.121 -.4870281 .0568408
1 217 | -.2738897 .1435658 -1.91 0.056 -.5552734 .0074941
1 218 | -.0226364 .1204505 -0.19 0.851 -.2587149 .2134422
1 219 | .0068932 .1233678 0.06 0.955 -.2349032 .2486897
1 220 | -.173965 .1412385 -1.23 0.218 -.4507874 .1028574
1 221 | -.1438035 .1258435 -1.14 0.253 -.3904521 .1028452
1 222 | .0557275 .1179556 0.47 0.637 -.1754613 .2869163
1 223 | -.2822275 .1281195 -2.20 0.028 -.5333372 -.0311178
1 224 | -.2222683 .1353139 -1.64 0.100 -.4874787 .0429421
1 225 | -.284931 .1412448 -2.02 0.044 -.5617657 -.0080963
1 226 | -.3007284 .1371884 -2.19 0.028 -.5696128 -.0318441
1 227 | -.468184 .1452445 -3.22 0.001 -.752858 -.1835099
1 228 | -.3601455 .1424776 -2.53 0.011 -.6393965 -.0808946
1 229 | -.3547464 .1356159 -2.62 0.009 -.6205486 -.0889442
1 230 | -.1972457 .1463782 -1.35 0.178 -.4841417 .0896504
1 231 | -.5294433 .1344291 -3.94 0.000 -.7929195 -.265967
1 232 | -.434823 .1390162 -3.13 0.002 -.7072898 -.1623562
1 233 | -.5481655 .1453042 -3.77 0.000 -.8329565 -.2633745
1 234 | -.4887477 .1492196 -3.28 0.001 -.7812128 -.1962825
|
1.flag_seniors | .2383972 .0558333 4.27 0.000 .1289659 .3478284
|
flag_seniors#quarterly |
1 211 | .0623154 .0703062 0.89 0.375 -.0754823 .200113
1 212 | .1169757 .0705655 1.66 0.097 -.0213301 .2552814
1 213 | -.0166609 .0694599 -0.24 0.810 -.1527998 .1194779
1 214 | .1527986 .066651 2.29 0.022 .022165 .2834321
1 215 | .0777975 .0697934 1.11 0.265 -.0589951 .2145901
1 216 | .0356543 .0725712 0.49 0.623 -.1065826 .1778912
1 217 | .0621057 .0681697 0.91 0.362 -.0715044 .1957159
1 218 | -.0408602 .0739119 -0.55 0.580 -.1857249 .1040046
1 219 | -.002145 .0710382 -0.03 0.976 -.1413774 .1370873
1 220 | .1450055 .071191 2.04 0.042 .0054738 .2845372
1 221 | -.0005755 .0715636 -0.01 0.994 -.1408375 .1396865
1 222 | .096926 .0692365 1.40 0.162 -.0387751 .232627
1 223 | .10044 .0697305 1.44 0.150 -.0362292 .2371092
1 224 | -.0227616 .0694881 -0.33 0.743 -.1589557 .1134326
1 225 | -.0214758 .0764536 -0.28 0.779 -.171322 .1283705
1 226 | .1829365 .0798726 2.29 0.022 .0263891 .3394839
1 227 | .1440356 .0779745 1.85 0.065 -.0087917 .2968628
1 228 | -.0023091 .0764789 -0.03 0.976 -.152205 .1475868
1 229 | -.0380233 .073532 -0.52 0.605 -.1821434 .1060967
1 230 | .0728883 .0758845 0.96 0.337 -.0758425 .2216191
1 231 | -.0966671 .0745594 -1.30 0.195 -.2428009 .0494667
1 232 | -.1171622 .0768104 -1.53 0.127 -.2677079 .0333835
1 233 | -.1350173 .0777006 -1.74 0.082 -.2873076 .0172731
1 234 | -.2307329 .0760485 -3.03 0.002 -.3797851 -.0816807
|
_cons | -1.820906 .0296459 -61.42 0.000 -1.879011 -1.762801
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
Linear regression Number of obs = 324,675
F(103, 12986) = 10.94
Prob > F = 0.0000
R-squared = 0.0195
Root MSE = .48388
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .0568333 .0076871 7.39 0.000 .0417654 .0719012
bike_route_tv | .0644135 .0059442 10.84 0.000 .0527619 .0760651
flag_street_improv | .0772177 .0224071 3.45 0.001 .0332965 .1211388
flag_left_turn | .1061206 .0326531 3.25 0.001 .0421157 .1701255
|
quarterly |
211 | -.0162739 .0058881 -2.76 0.006 -.0278155 -.0047323
212 | -.037219 .0056621 -6.57 0.000 -.0483176 -.0261204
213 | -.0119685 .0058936 -2.03 0.042 -.0235208 -.0004162
214 | -.0130455 .0058063 -2.25 0.025 -.0244268 -.0016642
215 | -.0222067 .0057915 -3.83 0.000 -.0335588 -.0108545
216 | -.0448357 .0056809 -7.89 0.000 -.0559711 -.0337003
217 | -.0190969 .0058097 -3.29 0.001 -.0304847 -.0077091
218 | -.0164086 .0059036 -2.78 0.005 -.0279805 -.0048367
219 | -.0139755 .006034 -2.32 0.021 -.0258031 -.002148
220 | -.0490404 .0057193 -8.57 0.000 -.060251 -.0378298
221 | -.0150342 .0058959 -2.55 0.011 -.0265911 -.0034774
222 | -.0094243 .0060297 -1.56 0.118 -.0212433 .0023948
223 | -.0150318 .0060539 -2.48 0.013 -.0268984 -.0031652
224 | -.0341207 .005852 -5.83 0.000 -.0455915 -.0226499
225 | -.0564933 .0056801 -9.95 0.000 -.0676272 -.0453595
226 | -.0721416 .0056467 -12.78 0.000 -.0832099 -.0610733
227 | -.0746358 .0057114 -13.07 0.000 -.085831 -.0634407
228 | -.0533571 .0058728 -9.09 0.000 -.0648687 -.0418455
229 | -.0208444 .0061976 -3.36 0.001 -.0329927 -.0086962
230 | -.0475643 .0060994 -7.80 0.000 -.05952 -.0356085
231 | -.0409039 .0061443 -6.66 0.000 -.0529477 -.0288601
232 | -.0463132 .0060278 -7.68 0.000 -.0581285 -.0344979
233 | -.0333643 .0062294 -5.36 0.000 -.0455747 -.0211538
234 | -.0391641 .0062821 -6.23 0.000 -.051478 -.0268502
|
1.flag_school | -.0292412 .0174378 -1.68 0.094 -.0634219 .0049394
|
flag_school#quarterly |
1 211 | -.0141757 .0210564 -0.67 0.501 -.0554494 .0270979
1 212 | .0085299 .0221829 0.38 0.701 -.0349519 .0520116
1 213 | .0003321 .0223147 0.01 0.988 -.0434079 .0440721
1 214 | -.01006 .0229523 -0.44 0.661 -.0550498 .0349298
1 215 | -.0312011 .020699 -1.51 0.132 -.0717741 .0093719
1 216 | -.0114127 .020787 -0.55 0.583 -.0521582 .0293329
1 217 | -.0051004 .0214557 -0.24 0.812 -.0471568 .0369559
1 218 | -.006676 .0208211 -0.32 0.748 -.0474883 .0341363
1 219 | .0018317 .021637 0.08 0.933 -.0405799 .0442434
1 220 | -.0061978 .0204224 -0.30 0.762 -.0462286 .033833
1 221 | .0040152 .0219621 0.18 0.855 -.0390338 .0470643
1 222 | -.018479 .0213708 -0.86 0.387 -.0603689 .0234109
1 223 | -.0045744 .0228569 -0.20 0.841 -.0493773 .0402285
1 224 | -.0259773 .0217622 -1.19 0.233 -.0686343 .0166798
1 225 | .0026474 .0209845 0.13 0.900 -.0384854 .0437802
1 226 | -.0038142 .0205459 -0.19 0.853 -.0440871 .0364586
1 227 | -.0048485 .0205044 -0.24 0.813 -.0450402 .0353432
1 228 | -.0387781 .0205564 -1.89 0.059 -.0790717 .0015155
1 229 | -.0286354 .0226892 -1.26 0.207 -.0731095 .0158387
1 230 | -.0400381 .0200099 -2.00 0.045 -.0792604 -.0008158
1 231 | .0199824 .0213469 0.94 0.349 -.0218607 .0618255
1 232 | -.0287897 .0206185 -1.40 0.163 -.0692051 .0116257
1 233 | -.0483553 .0200236 -2.41 0.016 -.0876046 -.0091061
1 234 | -.0056693 .0214165 -0.26 0.791 -.0476488 .0363102
|
1.flag_priorityinters | .5510755 .0864333 6.38 0.000 .3816536 .7204973
|
flag_priorityinters#quarterly |
1 211 | -.0950482 .0877803 -1.08 0.279 -.2671105 .0770141
1 212 | -.0760901 .0855034 -0.89 0.374 -.2436892 .0915091
1 213 | -.082729 .0817969 -1.01 0.312 -.2430629 .0776049
1 214 | -.118924 .0852504 -1.39 0.163 -.2860273 .0481793
1 215 | -.0449786 .0783648 -0.57 0.566 -.1985851 .1086279
1 216 | -.242683 .084433 -2.87 0.004 -.4081841 -.077182
1 217 | -.2083462 .0882521 -2.36 0.018 -.3813332 -.0353591
1 218 | -.0653841 .0830864 -0.79 0.431 -.2282455 .0974774
1 219 | -.0297586 .0870569 -0.34 0.732 -.2004028 .1408857
1 220 | -.2180781 .0862302 -2.53 0.011 -.3871018 -.0490543
1 221 | -.1227711 .0844047 -1.45 0.146 -.2882168 .0426745
1 222 | .0666436 .0878141 0.76 0.448 -.1054848 .238772
1 223 | -.1754033 .0824708 -2.13 0.033 -.3370581 -.0137484
1 224 | -.1906698 .0853774 -2.23 0.026 -.3580221 -.0233175
1 225 | -.2673676 .0829418 -3.22 0.001 -.4299456 -.1047896
1 226 | -.2886341 .0809685 -3.56 0.000 -.4473443 -.1299239
1 227 | -.3465682 .0816709 -4.24 0.000 -.5066551 -.1864812
1 228 | -.2709326 .086553 -3.13 0.002 -.4405892 -.1012759
1 229 | -.1922184 .0861075 -2.23 0.026 -.3610018 -.023435
1 230 | -.1545331 .0945427 -1.63 0.102 -.3398507 .0307845
1 231 | -.3132094 .0825572 -3.79 0.000 -.4750336 -.1513851
1 232 | -.2869057 .0840823 -3.41 0.001 -.4517194 -.1220919
1 233 | -.3133875 .0879166 -3.56 0.000 -.4857168 -.1410581
1 234 | -.3009024 .0874667 -3.44 0.001 -.4723501 -.1294548
|
1.flag_seniors | .0488208 .0122858 3.97 0.000 .0247388 .0729028
|
flag_seniors#quarterly |
1 211 | .0086483 .0150868 0.57 0.566 -.0209242 .0382207
1 212 | .0130958 .0146011 0.90 0.370 -.0155245 .041716
1 213 | -.0067572 .0146756 -0.46 0.645 -.0355236 .0220092
1 214 | .0315112 .0150888 2.09 0.037 .001935 .0610874
1 215 | .0105166 .0149166 0.71 0.481 -.0187222 .0397553
1 216 | -.0063626 .013987 -0.45 0.649 -.0337792 .0210539
1 217 | .0075484 .0144515 0.52 0.601 -.0207786 .0358754
1 218 | -.0124539 .0153476 -0.81 0.417 -.0425375 .0176297
1 219 | -.0031083 .0152005 -0.20 0.838 -.0329035 .0266869
1 220 | .0131827 .0142441 0.93 0.355 -.0147378 .0411031
1 221 | -.0029481 .0153286 -0.19 0.847 -.0329944 .0270981
1 222 | .0238004 .0160014 1.49 0.137 -.0075646 .0551654
1 223 | .0212913 .015638 1.36 0.173 -.0093614 .0519441
1 224 | -.0119768 .01376 -0.87 0.384 -.0389484 .0149949
1 225 | -.0172294 .0139838 -1.23 0.218 -.0446397 .0101809
1 226 | .0119099 .0151563 0.79 0.432 -.0177986 .0416184
1 227 | .0038371 .014484 0.26 0.791 -.0245536 .0322277
1 228 | -.0128789 .0147927 -0.87 0.384 -.0418747 .0161169
1 229 | -.0090338 .0157257 -0.57 0.566 -.0398584 .0217908
1 230 | .005453 .0156968 0.35 0.728 -.025315 .036221
1 231 | -.0253325 .0148269 -1.71 0.088 -.0543955 .0037304
1 232 | -.0305846 .0149157 -2.05 0.040 -.0598216 -.0013477
1 233 | -.0313339 .0154417 -2.03 0.042 -.061602 -.0010659
1 234 | -.0488155 .0145382 -3.36 0.001 -.0773124 -.0203185
|
_cons | .1626016 .0051435 31.61 0.000 .1525195 .1726837
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
Iteration 0: log pseudolikelihood = -643424.39
Iteration 1: log pseudolikelihood = -640471.19
Iteration 2: log pseudolikelihood = -640450.06
Iteration 3: log pseudolikelihood = -640450.04
Poisson regression Number of obs = 324,675
Wald chi2(103) = 6280.80
Prob > chi2 = 0.0000
Log pseudolikelihood = -640450.04 Pseudo R2 = 0.0390
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .2518354 .0249937 10.08 0.000 .2028486 .3008222
bike_route_tv | .2256303 .0216237 10.43 0.000 .1832487 .268012
flag_street_improv | .3319136 .0738284 4.50 0.000 .1872127 .4766146
flag_left_turn | .5265988 .0587228 8.97 0.000 .4115042 .6416935
|
quarterly |
211 | -.0085995 .011974 -0.72 0.473 -.0320682 .0148691
212 | -.0754444 .012116 -6.23 0.000 -.0991913 -.0516975
213 | .066062 .011752 5.62 0.000 .0430285 .0890955
214 | -.002452 .0117498 -0.21 0.835 -.0254811 .0205771
215 | .0237226 .0120643 1.97 0.049 .0000769 .0473682
216 | -.0696146 .0125998 -5.53 0.000 -.0943098 -.0449194
217 | .024321 .0120461 2.02 0.043 .0007111 .0479309
218 | .0004937 .0119323 0.04 0.967 -.0228931 .0238805
219 | .0057591 .0121297 0.47 0.635 -.0180147 .0295328
220 | -.0750789 .012769 -5.88 0.000 -.1001057 -.0500521
221 | .0246157 .012401 1.98 0.047 .0003103 .0489212
222 | .0396108 .012177 3.25 0.001 .0157443 .0634774
223 | .0686806 .0122588 5.60 0.000 .0446538 .0927075
224 | -.0715708 .0124442 -5.75 0.000 -.0959611 -.0471806
225 | -.3152922 .0139828 -22.55 0.000 -.3426979 -.2878865
226 | -.579318 .0156039 -37.13 0.000 -.609901 -.5487349
227 | -.5572338 .0159918 -34.84 0.000 -.5885772 -.5258905
228 | -.2972889 .0155754 -19.09 0.000 -.3278162 -.2667616
229 | -.1150928 .0154895 -7.43 0.000 -.1454516 -.084734
230 | -.2931755 .0162258 -18.07 0.000 -.3249774 -.2613736
231 | -.2215901 .0164393 -13.48 0.000 -.2538106 -.1893696
232 | -.267911 .0163065 -16.43 0.000 -.2998711 -.2359509
233 | -.1677464 .0161074 -10.41 0.000 -.1993164 -.1361764
234 | -.28073 .0167228 -16.79 0.000 -.3135061 -.247954
|
1.flag_school | -.2002001 .0483153 -4.14 0.000 -.2948963 -.1055039
|
flag_school#quarterly |
1 211 | .0938683 .0477765 1.96 0.049 .0002281 .1875085
1 212 | .0412169 .0478891 0.86 0.389 -.0526441 .1350779
1 213 | .114778 .0467359 2.46 0.014 .0231773 .2063787
1 214 | .0395619 .0471944 0.84 0.402 -.0529375 .1320613
1 215 | .0320924 .0485725 0.66 0.509 -.0631081 .1272928
1 216 | .0790524 .046911 1.69 0.092 -.0128915 .1709964
1 217 | .0151659 .0522735 0.29 0.772 -.0872882 .11762
1 218 | .0291003 .0463712 0.63 0.530 -.0617855 .1199861
1 219 | .0633181 .0457794 1.38 0.167 -.0264078 .153044
1 220 | .0939502 .0501577 1.87 0.061 -.004357 .1922575
1 221 | .0077424 .0475733 0.16 0.871 -.0854996 .1009844
1 222 | .0270706 .0486115 0.56 0.578 -.0682061 .1223473
1 223 | .0431487 .0462615 0.93 0.351 -.0475222 .1338197
1 224 | .0214583 .0467161 0.46 0.646 -.0701036 .1130202
1 225 | .0376522 .0562166 0.67 0.503 -.0725304 .1478348
1 226 | -.1025164 .0660131 -1.55 0.120 -.2318997 .0268668
1 227 | -.1016172 .0639988 -1.59 0.112 -.2270526 .0238181
1 228 | -.0440643 .0578148 -0.76 0.446 -.1573793 .0692506
1 229 | -.0150257 .0531336 -0.28 0.777 -.1191657 .0891143
1 230 | -.0894325 .0565137 -1.58 0.114 -.2001974 .0213323
1 231 | -.0657074 .0581472 -1.13 0.258 -.1796739 .0482591
1 232 | -.0461258 .0553013 -0.83 0.404 -.1545143 .0622627
1 233 | -.1087261 .0568831 -1.91 0.056 -.2202149 .0027628
1 234 | -.1386602 .0541175 -2.56 0.010 -.2447287 -.0325918
|
1.flag_priorityinters | 1.254174 .059631 21.03 0.000 1.137299 1.371049
|
flag_priorityinters#quarterly |
1 211 | -.0279687 .0419523 -0.67 0.505 -.1101938 .0542564
1 212 | -.0730381 .0441074 -1.66 0.098 -.159487 .0134108
1 213 | -.0951348 .0420096 -2.26 0.024 -.177472 -.0127975
1 214 | -.0622509 .0423304 -1.47 0.141 -.145217 .0207152
1 215 | .0077445 .0411524 0.19 0.851 -.0729128 .0884017
1 216 | -.1198995 .0478253 -2.51 0.012 -.2136354 -.0261636
1 217 | -.0855788 .0462926 -1.85 0.065 -.1763105 .005153
1 218 | -.0748339 .042524 -1.76 0.078 -.1581794 .0085116
1 219 | -.0744151 .0475012 -1.57 0.117 -.1675157 .0186855
1 220 | -.1097388 .0495374 -2.22 0.027 -.2068303 -.0126473
1 221 | -.1265566 .0452578 -2.80 0.005 -.2152602 -.0378529
1 222 | -.1181471 .0459664 -2.57 0.010 -.2082397 -.0280545
1 223 | -.1526905 .0428633 -3.56 0.000 -.236701 -.06868
1 224 | -.1521337 .0482929 -3.15 0.002 -.2467861 -.0574813
1 225 | -.1893931 .0532058 -3.56 0.000 -.2936745 -.0851117
1 226 | -.1755767 .0647463 -2.71 0.007 -.3024771 -.0486763
1 227 | -.2201905 .06737 -3.27 0.001 -.3522332 -.0881477
1 228 | -.249978 .0624701 -4.00 0.000 -.3724172 -.1275388
1 229 | -.3538402 .0627562 -5.64 0.000 -.4768401 -.2308403
1 230 | -.3309179 .0662448 -5.00 0.000 -.4607552 -.2010805
1 231 | -.2513201 .0703737 -3.57 0.000 -.3892501 -.1133901
1 232 | -.3013246 .0658088 -4.58 0.000 -.4303076 -.1723417
1 233 | -.302068 .062178 -4.86 0.000 -.4239347 -.1802013
1 234 | -.2587683 .0599163 -4.32 0.000 -.376202 -.1413346
|
1.flag_seniors | .2784043 .0289596 9.61 0.000 .2216445 .3351641
|
flag_seniors#quarterly |
1 211 | .0021151 .0230044 0.09 0.927 -.0429727 .0472029
1 212 | -.0136998 .0230781 -0.59 0.553 -.058932 .0315325
1 213 | -.0384024 .02338 -1.64 0.100 -.0842263 .0074215
1 214 | .0156448 .0228757 0.68 0.494 -.0291908 .0604804
1 215 | .0320798 .0229191 1.40 0.162 -.0128408 .0770005
1 216 | .0353147 .0239094 1.48 0.140 -.0115469 .0821763
1 217 | .0139083 .0231885 0.60 0.549 -.0315404 .059357
1 218 | .0084897 .0227942 0.37 0.710 -.036186 .0531654
1 219 | .0080124 .0227637 0.35 0.725 -.0366037 .0526286
1 220 | -.0308778 .0246654 -1.25 0.211 -.079221 .0174654
1 221 | .0399238 .024418 1.64 0.102 -.0079346 .0877822
1 222 | .0064351 .0246748 0.26 0.794 -.0419266 .0547969
1 223 | -.0192443 .0254992 -0.75 0.450 -.0692218 .0307332
1 224 | -.0394419 .0245925 -1.60 0.109 -.0876424 .0087586
1 225 | -.0690135 .0275619 -2.50 0.012 -.1230338 -.0149932
1 226 | -.0285162 .030139 -0.95 0.344 -.0875875 .0305552
1 227 | -.0066738 .0307144 -0.22 0.828 -.0668729 .0535253
1 228 | -.0904213 .0292949 -3.09 0.002 -.1478383 -.0330043
1 229 | -.125792 .0283916 -4.43 0.000 -.1814385 -.0701455
1 230 | -.0742402 .0298128 -2.49 0.013 -.1326722 -.0158083
1 231 | -.161994 .0308664 -5.25 0.000 -.2224911 -.1014969
1 232 | -.1784732 .031148 -5.73 0.000 -.2395221 -.1174243
1 233 | -.1479857 .0295595 -5.01 0.000 -.2059212 -.0900501
1 234 | -.1711722 .0294589 -5.81 0.000 -.2289105 -.1134339
|
_cons | .3626063 .0162487 22.32 0.000 .3307595 .3944532
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
Linear regression Number of obs = 324,675
F(103, 12986) = 48.32
Prob > F = 0.0000
R-squared = 0.0612
Root MSE = 2.1989
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .3897335 .0414992 9.39 0.000 .308389 .471078
bike_route_tv | .356759 .036349 9.81 0.000 .2855095 .4280084
flag_street_improv | .6302056 .163996 3.84 0.000 .3087494 .9516619
flag_left_turn | 1.079582 .1518207 7.11 0.000 .7819908 1.377173
|
quarterly |
211 | -.0133131 .018213 -0.73 0.465 -.0490132 .022387
212 | -.1089477 .0179495 -6.07 0.000 -.1441313 -.0737641
213 | .1033451 .0185109 5.58 0.000 .067061 .1396292
214 | -.003635 .0179361 -0.20 0.839 -.0387923 .0315223
215 | .0355712 .0186822 1.90 0.057 -.0010487 .072191
216 | -.1016737 .0187208 -5.43 0.000 -.1383693 -.0649781
217 | .0377132 .0186658 2.02 0.043 .0011256 .0743009
218 | .0012308 .0182778 0.07 0.946 -.0345965 .037058
219 | .0091202 .0186397 0.49 0.625 -.0274165 .0456568
220 | -.1088094 .0189898 -5.73 0.000 -.1460322 -.0715866
221 | .0387052 .019295 2.01 0.045 .0008843 .0765262
222 | .0630306 .0190833 3.30 0.001 .0256247 .1004366
223 | .1111889 .0195332 5.69 0.000 .0729009 .1494769
224 | -.1042427 .018613 -5.60 0.000 -.1407269 -.0677586
225 | -.416188 .0189041 -22.02 0.000 -.4532429 -.3791332
226 | -.6834844 .0194355 -35.17 0.000 -.7215808 -.645388
227 | -.6676168 .0198867 -33.57 0.000 -.7065977 -.6286359
228 | -.3995587 .0214767 -18.60 0.000 -.4416562 -.3574612
229 | -.1640237 .0226914 -7.23 0.000 -.2085021 -.1195453
230 | -.3962046 .0221537 -17.88 0.000 -.4396291 -.3527801
231 | -.3084682 .0230369 -13.39 0.000 -.3536239 -.2633125
232 | -.3670787 .0226232 -16.23 0.000 -.4114234 -.322734
233 | -.2378112 .023087 -10.30 0.000 -.2830651 -.1925573
234 | -.385049 .0230756 -16.69 0.000 -.4302807 -.3398174
|
1.flag_school | -.3029529 .0662326 -4.57 0.000 -.4327785 -.1731274
|
flag_school#quarterly |
1 211 | .1342865 .0686067 1.96 0.050 -.0001928 .2687657
1 212 | .0769191 .0639278 1.20 0.229 -.0483888 .202227
1 213 | .1575862 .0698714 2.26 0.024 .0206281 .2945444
1 214 | .0544905 .0660181 0.83 0.409 -.0749147 .1838957
1 215 | .0341871 .0688223 0.50 0.619 -.1007146 .1690888
1 216 | .1233225 .0644775 1.91 0.056 -.0030628 .2497079
1 217 | .0123748 .0733477 0.17 0.866 -.1313974 .156147
1 218 | .0385669 .0643878 0.60 0.549 -.0876427 .1647765
1 219 | .0860381 .0652547 1.32 0.187 -.0418706 .2139468
1 220 | .1472833 .0691479 2.13 0.033 .0117433 .2828232
1 221 | -.003356 .0670334 -0.05 0.960 -.1347513 .1280393
1 222 | .0212655 .0696968 0.31 0.760 -.1153504 .1578815
1 223 | .0397468 .0680873 0.58 0.559 -.0937143 .173208
1 224 | .0466585 .0630735 0.74 0.459 -.0769749 .1702918
1 225 | .1170988 .0678525 1.73 0.084 -.0159021 .2500997
1 226 | .0410791 .0681476 0.60 0.547 -.0925001 .1746583
1 227 | .0317234 .0669032 0.47 0.635 -.0994168 .1628636
1 228 | .0178457 .0695722 0.26 0.798 -.1185261 .1542175
1 229 | .0028715 .0698167 0.04 0.967 -.1339794 .1397225
1 230 | -.0343622 .0679955 -0.51 0.613 -.1676433 .0989189
1 231 | -.0271347 .0707049 -0.38 0.701 -.1657266 .1114572
1 232 | .0044702 .0683094 0.07 0.948 -.1294263 .1383667
1 233 | -.098031 .0713878 -1.37 0.170 -.2379615 .0418995
1 234 | -.0885903 .0639721 -1.38 0.166 -.2139849 .0368044
|
1.flag_priorityinters | 4.105872 .3357925 12.23 0.000 3.44767 4.764075
|
flag_priorityinters#quarterly |
1 211 | -.1793344 .2295605 -0.78 0.435 -.6293066 .2706378
1 212 | -.6858696 .2308814 -2.97 0.003 -1.138431 -.2333082
1 213 | -.3009203 .2284103 -1.32 0.188 -.748638 .1467974
1 214 | -.322514 .228589 -1.41 0.158 -.7705819 .1255539
1 215 | .222751 .2352136 0.95 0.344 -.2383021 .6838042
1 216 | -.810438 .2489927 -3.25 0.001 -1.2985 -.3223758
1 217 | -.3309858 .2517203 -1.31 0.189 -.8243945 .1624228
1 218 | -.3480138 .2310981 -1.51 0.132 -.8010001 .1049724
1 219 | -.3196942 .2605894 -1.23 0.220 -.8304876 .1910992
1 220 | -.8239239 .2648235 -3.11 0.002 -1.343017 -.304831
1 221 | -.4490179 .2410821 -1.86 0.063 -.9215741 .0235383
1 222 | -.2969451 .2534694 -1.17 0.241 -.7937824 .1998922
1 223 | -.3819413 .2303415 -1.66 0.097 -.8334444 .0695617
1 224 | -.7777716 .251094 -3.10 0.002 -1.269953 -.2855906
1 225 | -1.646099 .2561725 -6.43 0.000 -2.148235 -1.143963
1 226 | -2.167913 .283689 -7.64 0.000 -2.723985 -1.611841
1 227 | -2.141834 .2896402 -7.39 0.000 -2.709572 -1.574097
1 228 | -1.68328 .2910178 -5.78 0.000 -2.253717 -1.112842
1 229 | -1.627272 .3015406 -5.40 0.000 -2.218336 -1.036208
1 230 | -1.912454 .3057169 -6.26 0.000 -2.511703 -1.313204
1 231 | -1.44156 .3267519 -4.41 0.000 -2.082042 -.8010786
1 232 | -1.775681 .3088734 -5.75 0.000 -2.381118 -1.170244
1 233 | -1.479917 .296056 -5.00 0.000 -2.06023 -.8996033
1 234 | -1.623795 .2850206 -5.70 0.000 -2.182477 -1.065113
|
1.flag_seniors | .5003172 .056301 8.89 0.000 .3899589 .6106754
|
flag_seniors#quarterly |
1 211 | .0020267 .0446955 0.05 0.964 -.085583 .0896363
1 212 | -.0622871 .0432252 -1.44 0.150 -.1470149 .0224407
1 213 | -.0480387 .0465608 -1.03 0.302 -.1393048 .0432273
1 214 | .0331132 .0448961 0.74 0.461 -.0548897 .1211161
1 215 | .0862187 .0459088 1.88 0.060 -.0037692 .1762066
1 216 | .0374854 .0456179 0.82 0.411 -.0519324 .1269031
1 217 | .0438332 .0460436 0.95 0.341 -.046419 .1340854
1 218 | .0217775 .0445741 0.49 0.625 -.0655944 .1091493
1 219 | .0276316 .0446463 0.62 0.536 -.0598816 .1151449
1 220 | -.0886282 .0462911 -1.91 0.056 -.1793656 .0021091
1 221 | .1095315 .0496426 2.21 0.027 .0122247 .2068382
1 222 | .052717 .0500782 1.05 0.293 -.0454435 .1508776
1 223 | .0155202 .0524475 0.30 0.767 -.0872847 .1183251
1 224 | -.0915235 .0464055 -1.97 0.049 -.1824852 -.0005618
1 225 | -.225295 .0474342 -4.75 0.000 -.3182729 -.132317
1 226 | -.2463848 .0478896 -5.14 0.000 -.3402556 -.1525141
1 227 | -.2139664 .0491537 -4.35 0.000 -.3103148 -.117618
1 228 | -.2493561 .050891 -4.90 0.000 -.34911 -.1496023
1 229 | -.2505228 .0519419 -4.82 0.000 -.3523365 -.148709
1 230 | -.2230862 .0520169 -4.29 0.000 -.325047 -.1211254
1 231 | -.3359965 .0540587 -6.22 0.000 -.4419595 -.2300335
1 232 | -.3715078 .0536593 -6.92 0.000 -.4766878 -.2663277
1 233 | -.2966185 .0526602 -5.63 0.000 -.3998402 -.1933967
1 234 | -.362069 .0511319 -7.08 0.000 -.4622949 -.261843
|
_cons | 1.43483 .0241553 59.40 0.000 1.387482 1.482178
-----------------------------------------------------------------------------------------------
qt_results_naive_collision_count.rtf
dir : seeout
[57]:
display (exp(.2578853)-1)*100
29.419037
[ ]:
display (exp(-.0537103)-1)*100
Time trends¶
[12]:
xtpoisson collision_count i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
note: 1645 groups (41125 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -407240.84
Iteration 1: log pseudolikelihood = -400751.32
Iteration 2: log pseudolikelihood = -400684.34
Iteration 3: log pseudolikelihood = -400684.34
Conditional fixed-effects Poisson regression Number of obs = 283,550
Group variable: intersection~d Number of groups = 11,342
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 5692.73
Log pseudolikelihood = -400684.34 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0545089 .0127757 -4.27 0.000 -.0795489 -.0294689
bike_route_tv | .023258 .0188564 1.23 0.217 -.0136998 .0602159
flag_street_improv | -.0157123 .044949 -0.35 0.727 -.1038108 .0723862
flag_left_turn | -.1397319 .0369305 -3.78 0.000 -.2121143 -.0673494
|
quarterly |
211 | -.0161799 .011437 -1.41 0.157 -.0385961 .0062363
212 | -.0896791 .0116558 -7.69 0.000 -.1125241 -.0668341
213 | .0551596 .0112314 4.91 0.000 .0331466 .0771727
214 | -.0059886 .0112924 -0.53 0.596 -.0281214 .0161442
215 | .0131554 .0115487 1.14 0.255 -.0094798 .0357905
216 | -.0854101 .0121514 -7.03 0.000 -.1092265 -.0615938
217 | .0176821 .0115901 1.53 0.127 -.005034 .0403982
218 | -.0004078 .0115808 -0.04 0.972 -.0231058 .0222902
219 | .0074697 .0117696 0.63 0.526 -.0155983 .0305378
220 | -.0848481 .012375 -6.86 0.000 -.1091027 -.0605935
221 | .03012 .0119997 2.51 0.012 .0066011 .053639
222 | .0521237 .0117812 4.42 0.000 .0290331 .0752144
223 | .0796476 .0117887 6.76 0.000 .0565422 .102753
224 | -.0561359 .0120324 -4.67 0.000 -.0797191 -.0325528
225 | -.2837824 .0134639 -21.08 0.000 -.3101712 -.2573936
226 | -.5229903 .0147564 -35.44 0.000 -.5519123 -.4940683
227 | -.4984181 .0153003 -32.58 0.000 -.5284061 -.46843
228 | -.2424573 .0149259 -16.24 0.000 -.2717116 -.213203
229 | -.0513556 .0146779 -3.50 0.000 -.0801237 -.0225876
230 | -.222854 .0155157 -14.36 0.000 -.2532642 -.1924438
231 | -.1470914 .0155669 -9.45 0.000 -.1776019 -.1165809
232 | -.1881472 .0154136 -12.21 0.000 -.2183574 -.157937
233 | -.0817375 .0150253 -5.44 0.000 -.1111864 -.0522885
234 | -.180062 .0155078 -11.61 0.000 -.2104567 -.1496674
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0737829 .0453746 1.63 0.104 -.0151498 .1627155
1 212 | .0386518 .0459628 0.84 0.400 -.0514337 .1287373
1 213 | .1044823 .0441179 2.37 0.018 .0180128 .1909519
1 214 | .0308829 .0453656 0.68 0.496 -.0580319 .1197978
1 215 | .0076345 .0462302 0.17 0.869 -.082975 .0982441
1 216 | .0603414 .0454595 1.33 0.184 -.0287577 .1494405
1 217 | .0074989 .0505706 0.15 0.882 -.0916176 .1066154
1 218 | .0168342 .0433125 0.39 0.698 -.0680568 .1017252
1 219 | .0576161 .0438754 1.31 0.189 -.0283781 .1436103
1 220 | .0776739 .0485339 1.60 0.110 -.0174509 .1727986
1 221 | .0107431 .0455972 0.24 0.814 -.0786258 .100112
1 222 | .017507 .0464111 0.38 0.706 -.0734571 .1084711
1 223 | .0464876 .0438677 1.06 0.289 -.0394916 .1324668
1 224 | .0101999 .0457005 0.22 0.823 -.0793715 .0997713
1 225 | .0427865 .0541984 0.79 0.430 -.0634405 .1490134
1 226 | -.0786753 .0619255 -1.27 0.204 -.200047 .0426965
1 227 | -.0807167 .0603508 -1.34 0.181 -.1990021 .0375688
1 228 | -.0500919 .0548359 -0.91 0.361 -.1575684 .0573846
1 229 | -.0050026 .0505613 -0.10 0.921 -.1041009 .0940957
1 230 | -.0821218 .0534818 -1.54 0.125 -.1869441 .0227005
1 231 | -.0099183 .0536614 -0.18 0.853 -.1150927 .095256
1 232 | -.0296266 .051973 -0.57 0.569 -.1314918 .0722387
1 233 | -.0993588 .0533937 -1.86 0.063 -.2040085 .005291
1 234 | -.0940292 .0504266 -1.86 0.062 -.1928636 .0048051
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0353517 .0404113 -0.87 0.382 -.1145563 .0438529
1 212 | -.0638562 .0421728 -1.51 0.130 -.1465132 .0188009
1 213 | -.096362 .0407884 -2.36 0.018 -.1763057 -.0164183
1 214 | -.0725058 .0409856 -1.77 0.077 -.152836 .0078244
1 215 | .0116434 .0383856 0.30 0.762 -.063591 .0868778
1 216 | -.1245992 .0462714 -2.69 0.007 -.2152895 -.033909
1 217 | -.1008471 .0455161 -2.22 0.027 -.190057 -.0116372
1 218 | -.0642169 .041281 -1.56 0.120 -.1451261 .0166923
1 219 | -.062359 .0458162 -1.36 0.173 -.1521572 .0274391
1 220 | -.1157435 .0486058 -2.38 0.017 -.2110091 -.0204779
1 221 | -.1164285 .0422731 -2.75 0.006 -.1992822 -.0335748
1 222 | -.0676176 .0433873 -1.56 0.119 -.1526552 .01742
1 223 | -.1350789 .0418022 -3.23 0.001 -.2170097 -.0531481
1 224 | -.0926721 .0472442 -1.96 0.050 -.185269 -.0000752
1 225 | -.1233807 .0492313 -2.51 0.012 -.2198723 -.0268891
1 226 | -.1080261 .0585857 -1.84 0.065 -.222852 .0067997
1 227 | -.0948527 .0614032 -1.54 0.122 -.2152007 .0254954
1 228 | -.1237625 .0577943 -2.14 0.032 -.2370372 -.0104878
1 229 | -.2177368 .0562502 -3.87 0.000 -.3279851 -.1074884
1 230 | -.1581245 .0588952 -2.68 0.007 -.2735569 -.0426921
1 231 | -.1210882 .062079 -1.95 0.051 -.2427607 .0005843
1 232 | -.1601186 .0600288 -2.67 0.008 -.2777729 -.0424643
1 233 | -.1738166 .0557814 -3.12 0.002 -.2831462 -.0644871
1 234 | -.1323635 .054949 -2.41 0.016 -.2400615 -.0246655
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0079545 .0217606 0.37 0.715 -.0346956 .0506046
1 212 | -.0015878 .0216254 -0.07 0.941 -.0439728 .0407973
1 213 | -.0356294 .022052 -1.62 0.106 -.0788506 .0075917
1 214 | .0309004 .021607 1.43 0.153 -.0114485 .0732493
1 215 | .039138 .0217103 1.80 0.071 -.0034134 .0816895
1 216 | .0365314 .0226326 1.61 0.107 -.0078277 .0808906
1 217 | .0199625 .0220151 0.91 0.365 -.0231862 .0631112
1 218 | .0066988 .0214296 0.31 0.755 -.0353024 .0487
1 219 | .0147535 .0215824 0.68 0.494 -.0275472 .0570542
1 220 | -.0100415 .0232713 -0.43 0.666 -.0556524 .0355693
1 221 | .0440409 .0232434 1.89 0.058 -.0015154 .0895972
1 222 | .0291903 .0232949 1.25 0.210 -.0164668 .0748474
1 223 | .0092043 .0242258 0.38 0.704 -.0382773 .056686
1 224 | -.0216052 .0229948 -0.94 0.347 -.0666742 .0234638
1 225 | -.0480307 .0257821 -1.86 0.062 -.0985626 .0025013
1 226 | .0158447 .0285209 0.56 0.579 -.0400552 .0717447
1 227 | .0363592 .0292067 1.24 0.213 -.020885 .0936033
1 228 | -.0421417 .0280899 -1.50 0.134 -.0971969 .0129135
1 229 | -.0638471 .0268886 -2.37 0.018 -.1165478 -.0111465
1 230 | .0048796 .0281838 0.17 0.863 -.0503596 .0601188
1 231 | -.0857532 .0292182 -2.93 0.003 -.1430198 -.0284865
1 232 | -.1005245 .0295665 -3.40 0.001 -.1584738 -.0425753
1 233 | -.0734401 .0276281 -2.66 0.008 -.1275902 -.0192899
1 234 | -.103572 .0278195 -3.72 0.000 -.1580973 -.0490468
-----------------------------------------------------------------------------------------------
[13]:
margins, dydx(flag_LPIS)
Average marginal effects Number of obs = 283,550
Model VCE : Robust
Expression : Linear prediction, predict()
dy/dx w.r.t. : 1.flag_LPIS
------------------------------------------------------------------------------
| Delta-method
| dy/dx Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
1.flag_LPIS | -.0545089 .0127757 -4.27 0.000 -.0795489 -.0294689
------------------------------------------------------------------------------
Note: dy/dx for factor levels is the discrete change from the base level.
[14]:
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(robust)
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 283,550
Group variable: intersecti~d Number of groups = 11,342
R-sq: Obs per group:
within = 0.0367 min = 25
between = 0.0734 avg = 25.0
overall = 0.0003 max = 25
F(100,11341) = 48.79
corr(u_i, Xb) = -0.1463 Prob > F = 0.0000
(Std. Err. adjusted for 11,342 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1620425 .0304629 -5.32 0.000 -.2217551 -.10233
bike_route_tv | .0521006 .0378534 1.38 0.169 -.0220985 .1262998
flag_street_improv | -.2090141 .1475572 -1.42 0.157 -.4982517 .0802236
flag_left_turn | -.8060309 .1738069 -4.64 0.000 -1.146722 -.4653393
|
quarterly |
211 | -.0319371 .0224684 -1.42 0.155 -.075979 .0121048
212 | -.168313 .0223221 -7.54 0.000 -.2120681 -.124558
213 | .1111401 .0227784 4.88 0.000 .0664904 .1557898
214 | -.0121155 .0222748 -0.54 0.587 -.055778 .031547
215 | .025717 .0229998 1.12 0.264 -.0193666 .0708006
216 | -.161129 .0232727 -6.92 0.000 -.2067474 -.1155106
217 | .0350976 .0231118 1.52 0.129 -.0102055 .0804008
218 | -.0006974 .0228895 -0.03 0.976 -.0455648 .04417
219 | .0144739 .0233552 0.62 0.535 -.0313063 .0602542
220 | -.1599292 .0236944 -6.75 0.000 -.2063744 -.113484
221 | .0595997 .0240719 2.48 0.013 .0124145 .1067849
222 | .1044241 .0238045 4.39 0.000 .0577632 .151085
223 | .1627161 .0241649 6.73 0.000 .1153487 .2100835
224 | -.105153 .0232097 -4.53 0.000 -.1506481 -.0596579
225 | -.4800768 .0235269 -20.41 0.000 -.5261937 -.4339599
226 | -.7903037 .0239177 -33.04 0.000 -.8371865 -.7434208
227 | -.7594993 .0245717 -30.91 0.000 -.8076641 -.7113344
228 | -.4129972 .026669 -15.49 0.000 -.4652731 -.3607213
229 | -.090628 .0279537 -3.24 0.001 -.145422 -.0358339
230 | -.3801371 .0274105 -13.87 0.000 -.4338665 -.3264078
231 | -.2550503 .0283378 -9.00 0.000 -.3105972 -.1995034
232 | -.3212711 .0277485 -11.58 0.000 -.3756629 -.2668793
233 | -.1392876 .0280755 -4.96 0.000 -.1943205 -.0842548
234 | -.3049453 .0278159 -10.96 0.000 -.3594692 -.2504214
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1316898 .0791934 1.66 0.096 -.0235429 .2869226
1 212 | .0988606 .0752985 1.31 0.189 -.0487375 .2464586
1 213 | .1705377 .0801422 2.13 0.033 .0134451 .3276303
1 214 | .0515019 .0777587 0.66 0.508 -.1009185 .2039223
1 215 | .0017743 .0794604 0.02 0.982 -.1539819 .1575304
1 216 | .1289521 .0758673 1.70 0.089 -.0197609 .2776651
1 217 | .0025508 .0865432 0.03 0.976 -.1670888 .1721904
1 218 | .027702 .073662 0.38 0.707 -.1166884 .1720923
1 219 | .0942187 .0766995 1.23 0.219 -.0561256 .244563
1 220 | .1600159 .0810957 1.97 0.049 .0010542 .3189775
1 221 | -.0002021 .0789266 -0.00 0.998 -.1549119 .1545077
1 222 | .0029556 .0812954 0.04 0.971 -.1563975 .1623088
1 223 | .0464619 .0793265 0.59 0.558 -.1090319 .2019557
1 224 | .04223 .0744977 0.57 0.571 -.1037984 .1882583
1 225 | .1699934 .0797349 2.13 0.033 .0136991 .3262877
1 226 | .1136111 .0789829 1.44 0.150 -.041209 .2684313
1 227 | .1038026 .0768579 1.35 0.177 -.0468522 .2544573
1 228 | .0483564 .0799893 0.60 0.545 -.1084363 .2051492
1 229 | .0320501 .0812148 0.39 0.693 -.1271449 .1912451
1 230 | -.0018751 .0779832 -0.02 0.981 -.1547356 .1509854
1 231 | .0674877 .081206 0.83 0.406 -.0916902 .2266655
1 232 | .0624059 .0780998 0.80 0.424 -.0906832 .215495
1 233 | -.0818312 .0809506 -1.01 0.312 -.2405084 .0768461
1 234 | -.0208201 .0734086 -0.28 0.777 -.1647136 .1230734
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2776669 .2533576 -1.10 0.273 -.7742916 .2189578
1 212 | -.7556744 .2584936 -2.92 0.003 -1.262367 -.2489821
1 213 | -.4009339 .2537713 -1.58 0.114 -.8983696 .0965017
1 214 | -.449203 .2535069 -1.77 0.076 -.9461204 .0477145
1 215 | .1791234 .2487772 0.72 0.472 -.3085229 .6667698
1 216 | -1.0447 .2792378 -3.74 0.000 -1.592054 -.497345
1 217 | -.5486622 .2807959 -1.95 0.051 -1.099071 .0017464
1 218 | -.4081133 .256752 -1.59 0.112 -.9113916 .0951651
1 219 | -.3490826 .2886198 -1.21 0.227 -.9148274 .2166622
1 220 | -1.030539 .2990196 -3.45 0.001 -1.616669 -.4444089
1 221 | -.566719 .2629931 -2.15 0.031 -1.082231 -.0512069
1 222 | -.1914659 .2741711 -0.70 0.485 -.7288888 .3459569
1 223 | -.5244011 .2618671 -2.00 0.045 -1.037706 -.0110961
1 224 | -.8344405 .2906692 -2.87 0.004 -1.404202 -.2646786
1 225 | -1.724035 .2884648 -5.98 0.000 -2.289476 -1.158594
1 226 | -2.234285 .3203749 -6.97 0.000 -2.862275 -1.606295
1 227 | -2.129368 .325688 -6.54 0.000 -2.767773 -1.490963
1 228 | -1.639783 .3316791 -4.94 0.000 -2.289932 -.989635
1 229 | -1.53739 .3323035 -4.63 0.000 -2.188763 -.886018
1 230 | -1.708737 .3383062 -5.05 0.000 -2.371876 -1.045598
1 231 | -1.37932 .356259 -3.87 0.000 -2.077649 -.6809905
1 232 | -1.686967 .343718 -4.91 0.000 -2.360714 -1.01322
1 233 | -1.438145 .3277542 -4.39 0.000 -2.0806 -.7956902
1 234 | -1.553418 .320971 -4.84 0.000 -2.182577 -.9242594
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0144027 .0511423 0.28 0.778 -.0858451 .1146504
1 212 | -.0387649 .0490984 -0.79 0.430 -.1350062 .0574764
1 213 | -.0641911 .0528644 -1.21 0.225 -.1678145 .0394323
1 214 | .0752739 .0515092 1.46 0.144 -.0256931 .1762408
1 215 | .106493 .0524879 2.03 0.042 .0036076 .2093784
1 216 | .0512143 .0520172 0.98 0.325 -.0507484 .153177
1 217 | .059674 .0529145 1.13 0.259 -.0440476 .1633957
1 218 | .0184973 .0505047 0.37 0.714 -.0805006 .1174953
1 219 | .0428507 .0513601 0.83 0.404 -.057824 .1435253
1 220 | -.053617 .0528378 -1.01 0.310 -.1571882 .0499541
1 221 | .1292991 .0571094 2.26 0.024 .0173548 .2412433
1 222 | .102095 .0579629 1.76 0.078 -.0115223 .2157123
1 223 | .0620422 .0609107 1.02 0.308 -.0573533 .1814378
1 224 | -.0713037 .0524476 -1.36 0.174 -.1741101 .0315026
1 225 | -.1884799 .053258 -3.54 0.000 -.2928748 -.0840849
1 226 | -.1483882 .0544123 -2.73 0.006 -.2550458 -.0417306
1 227 | -.1088996 .0561171 -1.94 0.052 -.2188988 .0010997
1 228 | -.1641839 .0591726 -2.77 0.006 -.2801726 -.0481953
1 229 | -.1579728 .0603333 -2.62 0.009 -.2762365 -.0397091
1 230 | -.0649794 .0600023 -1.08 0.279 -.1825944 .0526355
1 231 | -.216112 .0623795 -3.46 0.001 -.3383866 -.0938374
1 232 | -.2490913 .0619704 -4.02 0.000 -.370564 -.1276187
1 233 | -.1777217 .0601126 -2.96 0.003 -.2955529 -.0598905
1 234 | -.2527034 .058551 -4.32 0.000 -.3674735 -.1379333
|
_cons | 2.10327 .0167095 125.87 0.000 2.070516 2.136023
------------------------------+----------------------------------------------------------------
sigma_u | 2.0694325
sigma_e | 1.6205111
rho | .61988629 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
[15]:
margins, dydx(flag_LPIS)
Average marginal effects Number of obs = 283,550
Model VCE : Robust
Expression : Linear prediction, predict()
dy/dx w.r.t. : 1.flag_LPIS
------------------------------------------------------------------------------
| Delta-method
| dy/dx Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
1.flag_LPIS | -.1620425 .0304629 -5.32 0.000 -.2217487 -.1023364
------------------------------------------------------------------------------
Note: dy/dx for factor levels is the discrete change from the base level.
[5]:
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 324,675
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0333 min = 25
between = 0.0789 avg = 25.0
overall = 0.0000 max = 25
F(100,12986) = 46.50
corr(u_i, Xb) = -0.1570 Prob > F = 0.0000
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1776024 .0287244 -6.18 0.000 -.2339065 -.1212983
bike_route_tv | .0269855 .0359991 0.75 0.453 -.043578 .097549
flag_street_improv | -.188277 .1314383 -1.43 0.152 -.4459154 .0693614
flag_left_turn | -.7997689 .167775 -4.77 0.000 -1.128632 -.4709054
|
quarterly |
211 | -.0272238 .0192278 -1.42 0.157 -.0649132 .0104655
212 | -.1437996 .0191108 -7.52 0.000 -.1812597 -.1063396
213 | .0952777 .0194953 4.89 0.000 .0570641 .1334913
214 | -.0099912 .0190627 -0.52 0.600 -.0473568 .0273744
215 | .022502 .0196851 1.14 0.253 -.0160837 .0610877
216 | -.1372205 .0199243 -6.89 0.000 -.1762751 -.0981659
217 | .0307486 .01978 1.55 0.120 -.0080231 .0695204
218 | .0002867 .0195899 0.01 0.988 -.0381124 .0386858
219 | .0133289 .0199892 0.67 0.505 -.0258527 .0525106
220 | -.1356572 .0202833 -6.69 0.000 -.1754155 -.095899
221 | .0523985 .0206028 2.54 0.011 .012014 .092783
222 | .091027 .0203753 4.47 0.000 .0510884 .1309656
223 | .1410987 .0206883 6.82 0.000 .1005465 .1816508
224 | -.087746 .0198624 -4.42 0.000 -.1266792 -.0488128
225 | -.4078028 .0201973 -20.19 0.000 -.4473925 -.3682132
226 | -.6724283 .0206401 -32.58 0.000 -.7128859 -.6319708
227 | -.645612 .0211811 -30.48 0.000 -.6871301 -.6040939
228 | -.3490299 .0228114 -15.30 0.000 -.3937435 -.3043162
229 | -.0729462 .0238554 -3.06 0.002 -.1197064 -.0261861
230 | -.3202074 .0234195 -13.67 0.000 -.366113 -.2743017
231 | -.2129973 .0241911 -8.80 0.000 -.2604155 -.1655792
232 | -.2692511 .0236936 -11.36 0.000 -.3156941 -.2228081
233 | -.1130946 .0239318 -4.73 0.000 -.1600045 -.0661846
234 | -.254319 .0237246 -10.72 0.000 -.3008228 -.2078153
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1182385 .0717572 1.65 0.099 -.0224162 .2588931
1 212 | .0835204 .0682041 1.22 0.221 -.0501697 .2172106
1 213 | .1587193 .072674 2.18 0.029 .0162677 .3011709
1 214 | .0459541 .0704507 0.65 0.514 -.0921396 .1840478
1 215 | .002042 .0719695 0.03 0.977 -.1390287 .1431127
1 216 | .11072 .0686973 1.61 0.107 -.0239367 .2453768
1 217 | .002922 .0784037 0.04 0.970 -.1507607 .1566046
1 218 | .0244281 .0667103 0.37 0.714 -.1063338 .1551901
1 219 | .0857961 .0694712 1.23 0.217 -.0503777 .2219699
1 220 | .139316 .073472 1.90 0.058 -.0046999 .2833318
1 221 | .0013831 .071476 0.02 0.985 -.1387204 .1414865
1 222 | .0060462 .0736807 0.08 0.935 -.1383787 .1504712
1 223 | .04823 .0718903 0.67 0.502 -.0926856 .1891456
1 224 | .034811 .0674795 0.52 0.606 -.0974587 .1670806
1 225 | .1373576 .0723547 1.90 0.058 -.0044681 .2791834
1 226 | .0759265 .0719682 1.06 0.291 -.0651418 .2169949
1 227 | .0679298 .070024 0.97 0.332 -.0693276 .2051872
1 228 | .0303498 .0725695 0.42 0.676 -.1118971 .1725966
1 229 | .0271477 .0735276 0.37 0.712 -.1169772 .1712726
1 230 | -.0136784 .0707405 -0.19 0.847 -.1523401 .1249833
1 231 | .0550566 .0735903 0.75 0.454 -.0891913 .1993044
1 232 | .0484018 .070823 0.68 0.494 -.0904218 .1872253
1 233 | -.0759146 .0733684 -1.03 0.301 -.2197274 .0678983
1 234 | -.0266903 .0666037 -0.40 0.689 -.1572434 .1038627
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2768213 .2497187 -1.11 0.268 -.7663065 .2126639
1 212 | -.7644635 .254875 -3.00 0.003 -1.264056 -.264871
1 213 | -.3837691 .2501327 -1.53 0.125 -.8740659 .1065277
1 214 | -.4429826 .2498901 -1.77 0.076 -.932804 .0468387
1 215 | .1814199 .2451884 0.74 0.459 -.2991853 .6620251
1 216 | -1.046841 .2754086 -3.80 0.000 -1.586682 -.5069999
1 217 | -.5362038 .2768039 -1.94 0.053 -1.07878 .0063726
1 218 | -.4022144 .2531303 -1.59 0.112 -.8983869 .0939582
1 219 | -.3418119 .284547 -1.20 0.230 -.8995658 .2159421
1 220 | -1.0348 .2949589 -3.51 0.000 -1.612963 -.4566378
1 221 | -.5501796 .259266 -2.12 0.034 -1.058379 -.0419802
1 222 | -.1748565 .2703667 -0.65 0.518 -.7048149 .3551019
1 223 | -.4976802 .2582105 -1.93 0.054 -1.003811 .0084502
1 224 | -.8337732 .2866796 -2.91 0.004 -1.395707 -.2718392
1 225 | -1.754218 .2849664 -6.16 0.000 -2.312794 -1.195642
1 226 | -2.291793 .316741 -7.24 0.000 -2.912652 -1.670934
1 227 | -2.182984 .3219092 -6.78 0.000 -2.813973 -1.551995
1 228 | -1.663286 .3273887 -5.08 0.000 -2.305016 -1.021556
1 229 | -1.526703 .3279267 -4.66 0.000 -2.169488 -.8839188
1 230 | -1.726626 .3339954 -5.17 0.000 -2.381306 -1.071947
1 231 | -1.390512 .3515503 -3.96 0.000 -2.079602 -.7014218
1 232 | -1.702154 .33934 -5.02 0.000 -2.36731 -1.036998
1 233 | -1.436331 .3234458 -4.44 0.000 -2.070332 -.8023299
1 234 | -1.569914 .3169059 -4.95 0.000 -2.191096 -.9487315
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0112276 .0469977 0.24 0.811 -.0808947 .10335
1 212 | -.0483955 .0450858 -1.07 0.283 -.1367703 .0399792
1 213 | -.0515704 .0486087 -1.06 0.289 -.1468506 .0437098
1 214 | .0694257 .04735 1.47 0.143 -.0233872 .1622386
1 215 | .1013443 .0482441 2.10 0.036 .0067787 .1959099
1 216 | .0360209 .0477792 0.75 0.451 -.0576334 .1296751
1 217 | .0579079 .0486266 1.19 0.234 -.0374073 .1532231
1 218 | .0170646 .0463728 0.37 0.713 -.0738328 .107962
1 219 | .0415852 .047151 0.88 0.378 -.0508378 .1340081
1 220 | -.0611882 .0485318 -1.26 0.207 -.1563176 .0339412
1 221 | .1250521 .0525617 2.38 0.017 .0220234 .2280808
1 222 | .10313 .0533943 1.93 0.053 -.0015306 .2077905
1 223 | .0702699 .0561709 1.25 0.211 -.0398333 .1803731
1 224 | -.0735621 .0482086 -1.53 0.127 -.168058 .0209338
1 225 | -.2103285 .0490861 -4.28 0.000 -.3065446 -.1141125
1 226 | -.1955049 .0502982 -3.89 0.000 -.2940967 -.096913
1 227 | -.156215 .0518315 -3.01 0.003 -.2578124 -.0546177
1 228 | -.1819107 .0544401 -3.34 0.001 -.2886212 -.0752003
1 229 | -.1517847 .0554043 -2.74 0.006 -.2603851 -.0431842
1 230 | -.0856614 .0551726 -1.55 0.121 -.1938079 .022485
1 231 | -.2175487 .0573643 -3.79 0.000 -.3299912 -.1051062
1 232 | -.2530286 .0570451 -4.44 0.000 -.3648453 -.1412119
1 233 | -.1730564 .0552395 -3.13 0.002 -.2813338 -.0647789
1 234 | -.2549443 .0538641 -4.73 0.000 -.3605257 -.1493628
|
_cons | 1.840794 .0146907 125.30 0.000 1.811999 1.86959
------------------------------+----------------------------------------------------------------
sigma_u | 2.0396001
sigma_e | 1.5170324
rho | .64382286 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
[16]:
cd "..\manuscripts"
C:\Users\jerem\Box Sync\Policy Evaluation\manuscripts
Outcome of collision counts¶
[17]:
**************************************
global outcome1 collision_count
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_xt_$outcome1
xtpoisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word replace ctitle(xtpoisson robust_se $outcome1)
xtreg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome1)
xtpoisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome2)
xtreg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome2)
xtpoisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome3)
xtreg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome3)
capture erase $filename.txt
note: 1645 groups (41125 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -407240.84
Iteration 1: log pseudolikelihood = -400751.32
Iteration 2: log pseudolikelihood = -400684.34
Iteration 3: log pseudolikelihood = -400684.34
Conditional fixed-effects Poisson regression Number of obs = 283,550
Group variable: intersection~d Number of groups = 11,342
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 5692.73
Log pseudolikelihood = -400684.34 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0545089 .0127757 -4.27 0.000 -.0795489 -.0294689
bike_route_tv | .023258 .0188564 1.23 0.217 -.0136998 .0602159
flag_street_improv | -.0157123 .044949 -0.35 0.727 -.1038108 .0723862
flag_left_turn | -.1397319 .0369305 -3.78 0.000 -.2121143 -.0673494
|
quarterly |
211 | -.0161799 .011437 -1.41 0.157 -.0385961 .0062363
212 | -.0896791 .0116558 -7.69 0.000 -.1125241 -.0668341
213 | .0551596 .0112314 4.91 0.000 .0331466 .0771727
214 | -.0059886 .0112924 -0.53 0.596 -.0281214 .0161442
215 | .0131554 .0115487 1.14 0.255 -.0094798 .0357905
216 | -.0854101 .0121514 -7.03 0.000 -.1092265 -.0615938
217 | .0176821 .0115901 1.53 0.127 -.005034 .0403982
218 | -.0004078 .0115808 -0.04 0.972 -.0231058 .0222902
219 | .0074697 .0117696 0.63 0.526 -.0155983 .0305378
220 | -.0848481 .012375 -6.86 0.000 -.1091027 -.0605935
221 | .03012 .0119997 2.51 0.012 .0066011 .053639
222 | .0521237 .0117812 4.42 0.000 .0290331 .0752144
223 | .0796476 .0117887 6.76 0.000 .0565422 .102753
224 | -.0561359 .0120324 -4.67 0.000 -.0797191 -.0325528
225 | -.2837824 .0134639 -21.08 0.000 -.3101712 -.2573936
226 | -.5229903 .0147564 -35.44 0.000 -.5519123 -.4940683
227 | -.4984181 .0153003 -32.58 0.000 -.5284061 -.46843
228 | -.2424573 .0149259 -16.24 0.000 -.2717116 -.213203
229 | -.0513556 .0146779 -3.50 0.000 -.0801237 -.0225876
230 | -.222854 .0155157 -14.36 0.000 -.2532642 -.1924438
231 | -.1470914 .0155669 -9.45 0.000 -.1776019 -.1165809
232 | -.1881472 .0154136 -12.21 0.000 -.2183574 -.157937
233 | -.0817375 .0150253 -5.44 0.000 -.1111864 -.0522885
234 | -.180062 .0155078 -11.61 0.000 -.2104567 -.1496674
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0737829 .0453746 1.63 0.104 -.0151498 .1627155
1 212 | .0386518 .0459628 0.84 0.400 -.0514337 .1287373
1 213 | .1044823 .0441179 2.37 0.018 .0180128 .1909519
1 214 | .0308829 .0453656 0.68 0.496 -.0580319 .1197978
1 215 | .0076345 .0462302 0.17 0.869 -.082975 .0982441
1 216 | .0603414 .0454595 1.33 0.184 -.0287577 .1494405
1 217 | .0074989 .0505706 0.15 0.882 -.0916176 .1066154
1 218 | .0168342 .0433125 0.39 0.698 -.0680568 .1017252
1 219 | .0576161 .0438754 1.31 0.189 -.0283781 .1436103
1 220 | .0776739 .0485339 1.60 0.110 -.0174509 .1727986
1 221 | .0107431 .0455972 0.24 0.814 -.0786258 .100112
1 222 | .017507 .0464111 0.38 0.706 -.0734571 .1084711
1 223 | .0464876 .0438677 1.06 0.289 -.0394916 .1324668
1 224 | .0101999 .0457005 0.22 0.823 -.0793715 .0997713
1 225 | .0427865 .0541984 0.79 0.430 -.0634405 .1490134
1 226 | -.0786753 .0619255 -1.27 0.204 -.200047 .0426965
1 227 | -.0807167 .0603508 -1.34 0.181 -.1990021 .0375688
1 228 | -.0500919 .0548359 -0.91 0.361 -.1575684 .0573846
1 229 | -.0050026 .0505613 -0.10 0.921 -.1041009 .0940957
1 230 | -.0821218 .0534818 -1.54 0.125 -.1869441 .0227005
1 231 | -.0099183 .0536614 -0.18 0.853 -.1150927 .095256
1 232 | -.0296266 .051973 -0.57 0.569 -.1314918 .0722387
1 233 | -.0993588 .0533937 -1.86 0.063 -.2040085 .005291
1 234 | -.0940292 .0504266 -1.86 0.062 -.1928636 .0048051
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0353517 .0404113 -0.87 0.382 -.1145563 .0438529
1 212 | -.0638562 .0421728 -1.51 0.130 -.1465132 .0188009
1 213 | -.096362 .0407884 -2.36 0.018 -.1763057 -.0164183
1 214 | -.0725058 .0409856 -1.77 0.077 -.152836 .0078244
1 215 | .0116434 .0383856 0.30 0.762 -.063591 .0868778
1 216 | -.1245992 .0462714 -2.69 0.007 -.2152895 -.033909
1 217 | -.1008471 .0455161 -2.22 0.027 -.190057 -.0116372
1 218 | -.0642169 .041281 -1.56 0.120 -.1451261 .0166923
1 219 | -.062359 .0458162 -1.36 0.173 -.1521572 .0274391
1 220 | -.1157435 .0486058 -2.38 0.017 -.2110091 -.0204779
1 221 | -.1164285 .0422731 -2.75 0.006 -.1992822 -.0335748
1 222 | -.0676176 .0433873 -1.56 0.119 -.1526552 .01742
1 223 | -.1350789 .0418022 -3.23 0.001 -.2170097 -.0531481
1 224 | -.0926721 .0472442 -1.96 0.050 -.185269 -.0000752
1 225 | -.1233807 .0492313 -2.51 0.012 -.2198723 -.0268891
1 226 | -.1080261 .0585857 -1.84 0.065 -.222852 .0067997
1 227 | -.0948527 .0614032 -1.54 0.122 -.2152007 .0254954
1 228 | -.1237625 .0577943 -2.14 0.032 -.2370372 -.0104878
1 229 | -.2177368 .0562502 -3.87 0.000 -.3279851 -.1074884
1 230 | -.1581245 .0588952 -2.68 0.007 -.2735569 -.0426921
1 231 | -.1210882 .062079 -1.95 0.051 -.2427607 .0005843
1 232 | -.1601186 .0600288 -2.67 0.008 -.2777729 -.0424643
1 233 | -.1738166 .0557814 -3.12 0.002 -.2831462 -.0644871
1 234 | -.1323635 .054949 -2.41 0.016 -.2400615 -.0246655
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0079545 .0217606 0.37 0.715 -.0346956 .0506046
1 212 | -.0015878 .0216254 -0.07 0.941 -.0439728 .0407973
1 213 | -.0356294 .022052 -1.62 0.106 -.0788506 .0075917
1 214 | .0309004 .021607 1.43 0.153 -.0114485 .0732493
1 215 | .039138 .0217103 1.80 0.071 -.0034134 .0816895
1 216 | .0365314 .0226326 1.61 0.107 -.0078277 .0808906
1 217 | .0199625 .0220151 0.91 0.365 -.0231862 .0631112
1 218 | .0066988 .0214296 0.31 0.755 -.0353024 .0487
1 219 | .0147535 .0215824 0.68 0.494 -.0275472 .0570542
1 220 | -.0100415 .0232713 -0.43 0.666 -.0556524 .0355693
1 221 | .0440409 .0232434 1.89 0.058 -.0015154 .0895972
1 222 | .0291903 .0232949 1.25 0.210 -.0164668 .0748474
1 223 | .0092043 .0242258 0.38 0.704 -.0382773 .056686
1 224 | -.0216052 .0229948 -0.94 0.347 -.0666742 .0234638
1 225 | -.0480307 .0257821 -1.86 0.062 -.0985626 .0025013
1 226 | .0158447 .0285209 0.56 0.579 -.0400552 .0717447
1 227 | .0363592 .0292067 1.24 0.213 -.020885 .0936033
1 228 | -.0421417 .0280899 -1.50 0.134 -.0971969 .0129135
1 229 | -.0638471 .0268886 -2.37 0.018 -.1165478 -.0111465
1 230 | .0048796 .0281838 0.17 0.863 -.0503596 .0601188
1 231 | -.0857532 .0292182 -2.93 0.003 -.1430198 -.0284865
1 232 | -.1005245 .0295665 -3.40 0.001 -.1584738 -.0425753
1 233 | -.0734401 .0276281 -2.66 0.008 -.1275902 -.0192899
1 234 | -.103572 .0278195 -3.72 0.000 -.1580973 -.0490468
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 283,550
Group variable: intersecti~d Number of groups = 11,342
R-sq: Obs per group:
within = 0.0367 min = 25
between = 0.0734 avg = 25.0
overall = 0.0003 max = 25
F(100,11341) = 48.79
corr(u_i, Xb) = -0.1463 Prob > F = 0.0000
(Std. Err. adjusted for 11,342 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1620425 .0304629 -5.32 0.000 -.2217551 -.10233
bike_route_tv | .0521006 .0378534 1.38 0.169 -.0220985 .1262998
flag_street_improv | -.2090141 .1475572 -1.42 0.157 -.4982517 .0802236
flag_left_turn | -.8060309 .1738069 -4.64 0.000 -1.146722 -.4653393
|
quarterly |
211 | -.0319371 .0224684 -1.42 0.155 -.075979 .0121048
212 | -.168313 .0223221 -7.54 0.000 -.2120681 -.124558
213 | .1111401 .0227784 4.88 0.000 .0664904 .1557898
214 | -.0121155 .0222748 -0.54 0.587 -.055778 .031547
215 | .025717 .0229998 1.12 0.264 -.0193666 .0708006
216 | -.161129 .0232727 -6.92 0.000 -.2067474 -.1155106
217 | .0350976 .0231118 1.52 0.129 -.0102055 .0804008
218 | -.0006974 .0228895 -0.03 0.976 -.0455648 .04417
219 | .0144739 .0233552 0.62 0.535 -.0313063 .0602542
220 | -.1599292 .0236944 -6.75 0.000 -.2063744 -.113484
221 | .0595997 .0240719 2.48 0.013 .0124145 .1067849
222 | .1044241 .0238045 4.39 0.000 .0577632 .151085
223 | .1627161 .0241649 6.73 0.000 .1153487 .2100835
224 | -.105153 .0232097 -4.53 0.000 -.1506481 -.0596579
225 | -.4800768 .0235269 -20.41 0.000 -.5261937 -.4339599
226 | -.7903037 .0239177 -33.04 0.000 -.8371865 -.7434208
227 | -.7594993 .0245717 -30.91 0.000 -.8076641 -.7113344
228 | -.4129972 .026669 -15.49 0.000 -.4652731 -.3607213
229 | -.090628 .0279537 -3.24 0.001 -.145422 -.0358339
230 | -.3801371 .0274105 -13.87 0.000 -.4338665 -.3264078
231 | -.2550503 .0283378 -9.00 0.000 -.3105972 -.1995034
232 | -.3212711 .0277485 -11.58 0.000 -.3756629 -.2668793
233 | -.1392876 .0280755 -4.96 0.000 -.1943205 -.0842548
234 | -.3049453 .0278159 -10.96 0.000 -.3594692 -.2504214
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1316898 .0791934 1.66 0.096 -.0235429 .2869226
1 212 | .0988606 .0752985 1.31 0.189 -.0487375 .2464586
1 213 | .1705377 .0801422 2.13 0.033 .0134451 .3276303
1 214 | .0515019 .0777587 0.66 0.508 -.1009185 .2039223
1 215 | .0017743 .0794604 0.02 0.982 -.1539819 .1575304
1 216 | .1289521 .0758673 1.70 0.089 -.0197609 .2776651
1 217 | .0025508 .0865432 0.03 0.976 -.1670888 .1721904
1 218 | .027702 .073662 0.38 0.707 -.1166884 .1720923
1 219 | .0942187 .0766995 1.23 0.219 -.0561256 .244563
1 220 | .1600159 .0810957 1.97 0.049 .0010542 .3189775
1 221 | -.0002021 .0789266 -0.00 0.998 -.1549119 .1545077
1 222 | .0029556 .0812954 0.04 0.971 -.1563975 .1623088
1 223 | .0464619 .0793265 0.59 0.558 -.1090319 .2019557
1 224 | .04223 .0744977 0.57 0.571 -.1037984 .1882583
1 225 | .1699934 .0797349 2.13 0.033 .0136991 .3262877
1 226 | .1136111 .0789829 1.44 0.150 -.041209 .2684313
1 227 | .1038026 .0768579 1.35 0.177 -.0468522 .2544573
1 228 | .0483564 .0799893 0.60 0.545 -.1084363 .2051492
1 229 | .0320501 .0812148 0.39 0.693 -.1271449 .1912451
1 230 | -.0018751 .0779832 -0.02 0.981 -.1547356 .1509854
1 231 | .0674877 .081206 0.83 0.406 -.0916902 .2266655
1 232 | .0624059 .0780998 0.80 0.424 -.0906832 .215495
1 233 | -.0818312 .0809506 -1.01 0.312 -.2405084 .0768461
1 234 | -.0208201 .0734086 -0.28 0.777 -.1647136 .1230734
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2776669 .2533576 -1.10 0.273 -.7742916 .2189578
1 212 | -.7556744 .2584936 -2.92 0.003 -1.262367 -.2489821
1 213 | -.4009339 .2537713 -1.58 0.114 -.8983696 .0965017
1 214 | -.449203 .2535069 -1.77 0.076 -.9461204 .0477145
1 215 | .1791234 .2487772 0.72 0.472 -.3085229 .6667698
1 216 | -1.0447 .2792378 -3.74 0.000 -1.592054 -.497345
1 217 | -.5486622 .2807959 -1.95 0.051 -1.099071 .0017464
1 218 | -.4081133 .256752 -1.59 0.112 -.9113916 .0951651
1 219 | -.3490826 .2886198 -1.21 0.227 -.9148274 .2166622
1 220 | -1.030539 .2990196 -3.45 0.001 -1.616669 -.4444089
1 221 | -.566719 .2629931 -2.15 0.031 -1.082231 -.0512069
1 222 | -.1914659 .2741711 -0.70 0.485 -.7288888 .3459569
1 223 | -.5244011 .2618671 -2.00 0.045 -1.037706 -.0110961
1 224 | -.8344405 .2906692 -2.87 0.004 -1.404202 -.2646786
1 225 | -1.724035 .2884648 -5.98 0.000 -2.289476 -1.158594
1 226 | -2.234285 .3203749 -6.97 0.000 -2.862275 -1.606295
1 227 | -2.129368 .325688 -6.54 0.000 -2.767773 -1.490963
1 228 | -1.639783 .3316791 -4.94 0.000 -2.289932 -.989635
1 229 | -1.53739 .3323035 -4.63 0.000 -2.188763 -.886018
1 230 | -1.708737 .3383062 -5.05 0.000 -2.371876 -1.045598
1 231 | -1.37932 .356259 -3.87 0.000 -2.077649 -.6809905
1 232 | -1.686967 .343718 -4.91 0.000 -2.360714 -1.01322
1 233 | -1.438145 .3277542 -4.39 0.000 -2.0806 -.7956902
1 234 | -1.553418 .320971 -4.84 0.000 -2.182577 -.9242594
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0144027 .0511423 0.28 0.778 -.0858451 .1146504
1 212 | -.0387649 .0490984 -0.79 0.430 -.1350062 .0574764
1 213 | -.0641911 .0528644 -1.21 0.225 -.1678145 .0394323
1 214 | .0752739 .0515092 1.46 0.144 -.0256931 .1762408
1 215 | .106493 .0524879 2.03 0.042 .0036076 .2093784
1 216 | .0512143 .0520172 0.98 0.325 -.0507484 .153177
1 217 | .059674 .0529145 1.13 0.259 -.0440476 .1633957
1 218 | .0184973 .0505047 0.37 0.714 -.0805006 .1174953
1 219 | .0428507 .0513601 0.83 0.404 -.057824 .1435253
1 220 | -.053617 .0528378 -1.01 0.310 -.1571882 .0499541
1 221 | .1292991 .0571094 2.26 0.024 .0173548 .2412433
1 222 | .102095 .0579629 1.76 0.078 -.0115223 .2157123
1 223 | .0620422 .0609107 1.02 0.308 -.0573533 .1814378
1 224 | -.0713037 .0524476 -1.36 0.174 -.1741101 .0315026
1 225 | -.1884799 .053258 -3.54 0.000 -.2928748 -.0840849
1 226 | -.1483882 .0544123 -2.73 0.006 -.2550458 -.0417306
1 227 | -.1088996 .0561171 -1.94 0.052 -.2188988 .0010997
1 228 | -.1641839 .0591726 -2.77 0.006 -.2801726 -.0481953
1 229 | -.1579728 .0603333 -2.62 0.009 -.2762365 -.0397091
1 230 | -.0649794 .0600023 -1.08 0.279 -.1825944 .0526355
1 231 | -.216112 .0623795 -3.46 0.001 -.3383866 -.0938374
1 232 | -.2490913 .0619704 -4.02 0.000 -.370564 -.1276187
1 233 | -.1777217 .0601126 -2.96 0.003 -.2955529 -.0598905
1 234 | -.2527034 .058551 -4.32 0.000 -.3674735 -.1379333
|
_cons | 2.10327 .0167095 125.87 0.000 2.070516 2.136023
------------------------------+----------------------------------------------------------------
sigma_u | 2.0694325
sigma_e | 1.6205111
rho | .61988629 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
note: 3278 groups (81950 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -102253.23
Iteration 1: log pseudolikelihood = -101810.66
Iteration 2: log pseudolikelihood = -101807.71
Iteration 3: log pseudolikelihood = -101807.71
Conditional fixed-effects Poisson regression Number of obs = 242,725
Group variable: intersection~d Number of groups = 9,709
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 852.09
Log pseudolikelihood = -101807.71 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0024471 .0255479 -0.10 0.924 -.0525201 .0476259
bike_route_tv | .0421361 .0400352 1.05 0.293 -.0363315 .1206038
flag_street_improv | -.0132646 .0660609 -0.20 0.841 -.1427416 .1162125
flag_left_turn | -.133011 .0741133 -1.79 0.073 -.2782705 .0122485
|
quarterly |
211 | -.0959137 .0349884 -2.74 0.006 -.1644897 -.0273377
212 | -.2362621 .0358821 -6.58 0.000 -.3065897 -.1659345
213 | -.0680942 .0345701 -1.97 0.049 -.1358504 -.000338
214 | -.0714166 .0340536 -2.10 0.036 -.1381605 -.0046727
215 | -.1287337 .0348722 -3.69 0.000 -.1970819 -.0603855
216 | -.2875999 .0369617 -7.78 0.000 -.3600435 -.2151563
217 | -.1055109 .0346444 -3.05 0.002 -.1734127 -.0376092
218 | -.0867224 .0348008 -2.49 0.013 -.1549307 -.018514
219 | -.0693615 .0353192 -1.96 0.050 -.1385859 -.0001372
220 | -.3078526 .0373181 -8.25 0.000 -.3809948 -.2347104
221 | -.0690861 .0345276 -2.00 0.045 -.1367591 -.0014132
222 | -.0295263 .0345978 -0.85 0.393 -.0973366 .0382841
223 | -.058116 .035336 -1.64 0.100 -.1273733 .0111413
224 | -.1788645 .0362533 -4.93 0.000 -.2499196 -.1078094
225 | -.333112 .0376838 -8.84 0.000 -.4069708 -.2592531
226 | -.4493607 .0389649 -11.53 0.000 -.5257306 -.3729908
227 | -.4605939 .0399995 -11.51 0.000 -.5389915 -.3821963
228 | -.2805609 .0375975 -7.46 0.000 -.3542505 -.2068712
229 | -.0558971 .0358537 -1.56 0.119 -.1261689 .0143748
230 | -.2250531 .0381151 -5.90 0.000 -.2997573 -.1503489
231 | -.1701984 .0373479 -4.56 0.000 -.2433989 -.096998
232 | -.203879 .0372682 -5.47 0.000 -.2769234 -.1308346
233 | -.1088998 .0371727 -2.93 0.003 -.1817569 -.0360427
234 | -.1391257 .0377562 -3.68 0.000 -.2131265 -.0651249
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.1189713 .142079 -0.84 0.402 -.397441 .1594984
1 212 | .0223542 .1485906 0.15 0.880 -.268878 .3135865
1 213 | -.0113676 .1430192 -0.08 0.937 -.29168 .2689448
1 214 | -.0703764 .1495795 -0.47 0.638 -.3635468 .2227939
1 215 | -.2683467 .1524997 -1.76 0.078 -.5672407 .0305472
1 216 | -.170124 .1579239 -1.08 0.281 -.4796492 .1394011
1 217 | -.0581452 .1421947 -0.41 0.683 -.3368417 .2205514
1 218 | -.0735992 .1385234 -0.53 0.595 -.3451 .1979016
1 219 | -.0014198 .1369643 -0.01 0.992 -.2698648 .2670253
1 220 | -.1143287 .1498558 -0.76 0.446 -.4080406 .1793832
1 221 | .0144022 .1386848 0.10 0.917 -.2574151 .2862195
1 222 | -.1145217 .1376052 -0.83 0.405 -.3842229 .1551795
1 223 | -.0226449 .1456317 -0.16 0.876 -.3080778 .2627879
1 224 | -.244672 .1667991 -1.47 0.142 -.5715923 .0822483
1 225 | -.0333674 .153868 -0.22 0.828 -.3349432 .2682083
1 226 | -.088359 .1579025 -0.56 0.576 -.3978423 .2211243
1 227 | -.1084319 .1649345 -0.66 0.511 -.4316976 .2148339
1 228 | -.4070816 .1765183 -2.31 0.021 -.7530512 -.061112
1 229 | -.1792868 .1559933 -1.15 0.250 -.485028 .1264544
1 230 | -.3440515 .1561507 -2.20 0.028 -.6501012 -.0380017
1 231 | .1463692 .1344911 1.09 0.276 -.1172286 .409967
1 232 | -.243873 .1573491 -1.55 0.121 -.5522715 .0645254
1 233 | -.3908661 .1556024 -2.51 0.012 -.6958411 -.085891
1 234 | -.0330911 .1461663 -0.23 0.821 -.3195718 .2533896
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0763956 .1292182 -0.59 0.554 -.3296587 .1768674
1 212 | .0441587 .125356 0.35 0.725 -.2015345 .289852
1 213 | -.0666524 .1206397 -0.55 0.581 -.3031018 .1697971
1 214 | -.149745 .1267426 -1.18 0.237 -.398156 .0986659
1 215 | .0249644 .1132539 0.22 0.826 -.1970091 .246938
1 216 | -.2086672 .1391444 -1.50 0.134 -.4813851 .0640508
1 217 | -.268468 .14368 -1.87 0.062 -.5500757 .0131397
1 218 | -.0199522 .1208662 -0.17 0.869 -.2568457 .2169412
1 219 | .0092857 .1235816 0.08 0.940 -.2329298 .2515011
1 220 | -.1631472 .1419951 -1.15 0.251 -.4414524 .115158
1 221 | -.1323842 .1260324 -1.05 0.294 -.3794032 .1146348
1 222 | .0949482 .1172083 0.81 0.418 -.1347758 .3246723
1 223 | -.2410008 .1261744 -1.91 0.056 -.4882982 .0062965
1 224 | -.1478335 .1347015 -1.10 0.272 -.4118437 .1161766
1 225 | -.1993911 .1396524 -1.43 0.153 -.4731048 .0743226
1 226 | -.2030105 .1383853 -1.47 0.142 -.4742407 .0682197
1 227 | -.3007141 .1443325 -2.08 0.037 -.5836006 -.0178275
1 228 | -.2093539 .1396608 -1.50 0.134 -.483084 .0643762
1 229 | -.2071445 .1323666 -1.56 0.118 -.4665783 .0522893
1 230 | -.0307098 .1429024 -0.21 0.830 -.3107934 .2493738
1 231 | -.3657554 .1325381 -2.76 0.006 -.6255253 -.1059855
1 232 | -.2732398 .1385963 -1.97 0.049 -.5448836 -.0015961
1 233 | -.3913362 .1433323 -2.73 0.006 -.6722625 -.11041
1 234 | -.3386381 .1470068 -2.30 0.021 -.6267662 -.0505101
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0608264 .0698849 0.87 0.384 -.0761454 .1977982
1 212 | .1180996 .0705003 1.68 0.094 -.0200784 .2562775
1 213 | -.015567 .069183 -0.23 0.822 -.1511632 .1200293
1 214 | .1534103 .066436 2.31 0.021 .0231981 .2836225
1 215 | .0805637 .0696612 1.16 0.247 -.0559697 .2170972
1 216 | .0343455 .0721863 0.48 0.634 -.1071371 .1758282
1 217 | .0599056 .0675798 0.89 0.375 -.0725484 .1923597
1 218 | -.0375876 .0737431 -0.51 0.610 -.1821214 .1069461
1 219 | .0090586 .0707733 0.13 0.898 -.1296545 .1477716
1 220 | .151174 .0708968 2.13 0.033 .0122188 .2901291
1 221 | .0099232 .0712787 0.14 0.889 -.1297804 .1496269
1 222 | .1173323 .0686392 1.71 0.087 -.0171981 .2518627
1 223 | .1194475 .0691217 1.73 0.084 -.0160286 .2549235
1 224 | -.0040599 .0689212 -0.06 0.953 -.1391429 .1310231
1 225 | -.0042384 .0756147 -0.06 0.955 -.1524405 .1439637
1 226 | .2047564 .0791255 2.59 0.010 .0496733 .3598395
1 227 | .1724941 .0770142 2.24 0.025 .021549 .3234391
1 228 | .0411055 .0756072 0.54 0.587 -.1070818 .1892928
1 229 | .0201702 .0724561 0.28 0.781 -.1218412 .1621816
1 230 | .1438665 .0749518 1.92 0.055 -.0030364 .2907694
1 231 | -.0244954 .0736397 -0.33 0.739 -.1688265 .1198357
1 232 | -.0416331 .0760731 -0.55 0.584 -.1907337 .1074675
1 233 | -.0592247 .076374 -0.78 0.438 -.208915 .0904656
1 234 | -.1536581 .0755116 -2.03 0.042 -.301658 -.0056581
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 242,725
Group variable: intersecti~d Number of groups = 9,709
R-sq: Obs per group:
within = 0.0043 min = 25
between = 0.0268 avg = 25.0
overall = 0.0001 max = 25
F(100,9708) = 7.80
corr(u_i, Xb) = -0.1509 Prob > F = 0.0000
(Std. Err. adjusted for 9,709 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.000389 .00628 -0.06 0.951 -.0126991 .0119211
bike_route_tv | .0100939 .0086547 1.17 0.244 -.0068712 .027059
flag_street_improv | -.0160022 .0234161 -0.68 0.494 -.0619027 .0298983
flag_left_turn | -.0683059 .0273578 -2.50 0.013 -.1219328 -.014679
|
quarterly |
211 | -.0222227 .0081671 -2.72 0.007 -.038232 -.0062134
212 | -.0512793 .0078481 -6.53 0.000 -.0666632 -.0358954
213 | -.0159384 .0081722 -1.95 0.051 -.0319575 .0000808
214 | -.0168951 .0080509 -2.10 0.036 -.0326766 -.0011135
215 | -.0292574 .0080214 -3.65 0.000 -.044981 -.0135338
216 | -.0606575 .0078664 -7.71 0.000 -.0760773 -.0452377
217 | -.0243336 .0080472 -3.02 0.003 -.0401077 -.0085594
218 | -.0200285 .0081721 -2.45 0.014 -.0360474 -.0040096
219 | -.0162132 .0083539 -1.94 0.052 -.0325885 .0001622
220 | -.0644547 .0079078 -8.15 0.000 -.0799557 -.0489537
221 | -.016173 .0081645 -1.98 0.048 -.0321772 -.0001687
222 | -.0071106 .0083487 -0.85 0.394 -.0234758 .0092546
223 | -.0137516 .0083876 -1.64 0.101 -.030193 .0026899
224 | -.039627 .008094 -4.90 0.000 -.0554929 -.0237612
225 | -.0687704 .0078181 -8.80 0.000 -.0840956 -.0534452
226 | -.0879891 .0077398 -11.37 0.000 -.1031608 -.0728175
227 | -.0895152 .007834 -11.43 0.000 -.1048715 -.0741588
228 | -.0590961 .0080667 -7.33 0.000 -.0749085 -.0432836
229 | -.0128782 .0084749 -1.52 0.129 -.0294907 .0037343
230 | -.048592 .0083068 -5.85 0.000 -.064875 -.032309
231 | -.0375963 .0083741 -4.49 0.000 -.0540112 -.0211813
232 | -.0442469 .0082074 -5.39 0.000 -.060335 -.0281587
233 | -.0245249 .0085292 -2.88 0.004 -.0412438 -.007806
234 | -.0309878 .0085332 -3.63 0.000 -.0477147 -.014261
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.0188436 .0279144 -0.68 0.500 -.0735617 .0358745
1 212 | .0114793 .0294001 0.39 0.696 -.0461511 .0691096
1 213 | .0007548 .0295995 0.03 0.980 -.0572663 .058776
1 214 | -.0127842 .0304077 -0.42 0.674 -.0723896 .0468213
1 215 | -.0412228 .0274264 -1.50 0.133 -.0949843 .0125387
1 216 | -.0147188 .0275006 -0.54 0.593 -.0686256 .0391881
1 217 | -.0071307 .0284256 -0.25 0.802 -.0628508 .0485894
1 218 | -.0099064 .0275909 -0.36 0.720 -.0639903 .0441775
1 219 | .0022829 .0287009 0.08 0.937 -.0539769 .0585428
1 220 | -.0077938 .0270317 -0.29 0.773 -.0607815 .0451939
1 221 | .0056033 .0291139 0.19 0.847 -.0514659 .0626725
1 222 | -.0240144 .0283111 -0.85 0.396 -.0795102 .0314813
1 223 | -.003697 .0303642 -0.12 0.903 -.0632172 .0558232
1 224 | -.0318199 .0287606 -1.11 0.269 -.0881966 .0245568
1 225 | .0068202 .0278163 0.25 0.806 -.0477056 .061346
1 226 | .0011754 .0272014 0.04 0.966 -.052145 .0544959
1 227 | -.0000212 .0270079 -0.00 0.999 -.0529622 .0529199
1 228 | -.0440854 .0270335 -1.63 0.103 -.0970767 .0089059
1 229 | -.0308056 .0299299 -1.03 0.303 -.0894744 .0278632
1 230 | -.0446355 .0263578 -1.69 0.090 -.0963022 .0070312
1 231 | .0348654 .0282837 1.23 0.218 -.0205765 .0903072
1 232 | -.028488 .0272226 -1.05 0.295 -.0818499 .024874
1 233 | -.0548226 .0263917 -2.08 0.038 -.1065558 -.0030895
1 234 | .0014046 .0282969 0.05 0.960 -.0540633 .0568725
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0938187 .0907501 -1.03 0.301 -.2717079 .0840705
1 212 | -.0683127 .0884288 -0.77 0.440 -.2416516 .1050262
1 213 | -.0818619 .0845982 -0.97 0.333 -.247692 .0839681
1 214 | -.1205913 .0881341 -1.37 0.171 -.2933526 .05217
1 215 | -.0399441 .0811174 -0.49 0.622 -.1989512 .119063
1 216 | -.2366375 .0873257 -2.71 0.007 -.407814 -.065461
1 217 | -.210124 .0912705 -2.30 0.021 -.3890333 -.0312148
1 218 | -.0618392 .0860881 -0.72 0.473 -.2305899 .1069114
1 219 | -.0267796 .090128 -0.30 0.766 -.2034493 .1498901
1 220 | -.2113082 .0892658 -2.37 0.018 -.3862876 -.0363287
1 221 | -.121358 .0874326 -1.39 0.165 -.2927441 .0500281
1 222 | .0748523 .0909281 0.82 0.410 -.1033857 .2530902
1 223 | -.1735199 .08511 -2.04 0.041 -.3403533 -.0066866
1 224 | -.1749978 .0883967 -1.98 0.048 -.3482738 -.0017218
1 225 | -.2458181 .0857668 -2.87 0.004 -.4139388 -.0776973
1 226 | -.2642473 .0839128 -3.15 0.002 -.4287339 -.0997607
1 227 | -.3102426 .0841351 -3.69 0.000 -.475165 -.1453202
1 228 | -.2392174 .0890709 -2.69 0.007 -.4138149 -.0646199
1 229 | -.1681972 .0885693 -1.90 0.058 -.3418116 .0054171
1 230 | -.1176483 .097139 -1.21 0.226 -.308061 .0727644
1 231 | -.2813038 .0848074 -3.32 0.001 -.447544 -.1150636
1 232 | -.2522958 .0866187 -2.91 0.004 -.4220865 -.082505
1 233 | -.2840789 .0903157 -3.15 0.002 -.4611166 -.1070413
1 234 | -.2697622 .0896601 -3.01 0.003 -.4455146 -.0940097
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .013664 .0182837 0.75 0.455 -.0221759 .0495039
1 212 | .0229395 .0177058 1.30 0.195 -.0117676 .0576466
1 213 | -.0051288 .0178117 -0.29 0.773 -.0400433 .0297858
1 214 | .0405378 .0182806 2.22 0.027 .0047041 .0763716
1 215 | .0176616 .0180664 0.98 0.328 -.0177523 .0530754
1 216 | .0021013 .0169817 0.12 0.902 -.0311865 .035389
1 217 | .0133333 .0175391 0.76 0.447 -.0210469 .0477135
1 218 | -.0106695 .0185926 -0.57 0.566 -.047115 .0257759
1 219 | .0011647 .0184328 0.06 0.950 -.0349675 .0372969
1 220 | .0271333 .0172835 1.57 0.116 -.0067459 .0610126
1 221 | .0015069 .0185545 0.08 0.935 -.0348638 .0378777
1 222 | .03278 .019345 1.69 0.090 -.0051402 .0707002
1 223 | .0315624 .0189343 1.67 0.096 -.0055527 .0686775
1 224 | -.0041689 .016717 -0.25 0.803 -.0369377 .0285998
1 225 | -.0063126 .0169117 -0.37 0.709 -.039463 .0268378
1 226 | .0319111 .0182561 1.75 0.081 -.0038746 .0676967
1 227 | .0244437 .0174621 1.40 0.162 -.0097856 .058673
1 228 | .0034678 .0178533 0.19 0.846 -.0315283 .0384638
1 229 | .0042247 .0189554 0.22 0.824 -.0329319 .0413812
1 230 | .0292609 .0189105 1.55 0.122 -.0078077 .0663295
1 231 | -.0080127 .0179529 -0.45 0.655 -.0432041 .0271786
1 232 | -.0122341 .0180166 -0.68 0.497 -.0475503 .0230822
1 233 | -.0152097 .0185968 -0.82 0.413 -.0516633 .0212439
1 234 | -.0351743 .0176425 -1.99 0.046 -.0697573 -.0005913
|
_cons | .2545732 .0054725 46.52 0.000 .243846 .2653005
------------------------------+----------------------------------------------------------------
sigma_u | .2891766
sigma_e | .48483897
rho | .26239479 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
note: 1659 groups (41475 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -390074.45
Iteration 1: log pseudolikelihood = -383801.19
Iteration 2: log pseudolikelihood = -383735.72
Iteration 3: log pseudolikelihood = -383735.72
Conditional fixed-effects Poisson regression Number of obs = 283,200
Group variable: intersection~d Number of groups = 11,328
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 5669.70
Log pseudolikelihood = -383735.72 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0604273 .0129582 -4.66 0.000 -.085825 -.0350296
bike_route_tv | .0217144 .0189411 1.15 0.252 -.0154094 .0588383
flag_street_improv | -.0172161 .0458325 -0.38 0.707 -.1070463 .072614
flag_left_turn | -.1393964 .0384082 -3.63 0.000 -.214675 -.0641177
|
quarterly |
211 | -.0073097 .0120498 -0.61 0.544 -.0309269 .0163075
212 | -.0739257 .0121864 -6.07 0.000 -.0978107 -.0500408
213 | .0685466 .0118301 5.79 0.000 .0453601 .0917332
214 | .0013416 .01184 0.11 0.910 -.0218643 .0245475
215 | .0283996 .012161 2.34 0.020 .0045644 .0522347
216 | -.0643491 .0126776 -5.08 0.000 -.0891968 -.0395014
217 | .0310661 .0121604 2.55 0.011 .0072321 .0549
218 | .0091324 .0120467 0.76 0.448 -.0144788 .0327435
219 | .0160046 .0122447 1.31 0.191 -.0079944 .0400037
220 | -.0618799 .0128633 -4.81 0.000 -.0870915 -.0366683
221 | .0410159 .0124999 3.28 0.001 .0165166 .0655153
222 | .0611432 .0123397 4.96 0.000 .0369578 .0853285
223 | .094476 .0123272 7.66 0.000 .0703152 .1186368
224 | -.0428257 .0125501 -3.41 0.001 -.0674234 -.0182281
225 | -.2782514 .014057 -19.79 0.000 -.3058027 -.2507002
226 | -.532061 .0155145 -34.29 0.000 -.5624688 -.5016531
227 | -.5030558 .0159509 -31.54 0.000 -.534319 -.4717925
228 | -.238214 .0154215 -15.45 0.000 -.2684395 -.2079884
229 | -.0509427 .0152461 -3.34 0.001 -.0808244 -.0210609
230 | -.2227071 .0159276 -13.98 0.000 -.2539246 -.1914896
231 | -.1445012 .016018 -9.02 0.000 -.1758959 -.1131064
232 | -.1864139 .0159293 -11.70 0.000 -.2176348 -.155193
233 | -.0786801 .0154759 -5.08 0.000 -.1090122 -.048348
234 | -.1851357 .0159882 -11.58 0.000 -.216472 -.1537993
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0932472 .0477468 1.95 0.051 -.0003347 .1868291
1 212 | .0407681 .0478975 0.85 0.395 -.0531092 .1346455
1 213 | .1163292 .046606 2.50 0.013 .0249832 .2076752
1 214 | .041931 .0470985 0.89 0.373 -.0503803 .1342423
1 215 | .0327443 .048354 0.68 0.498 -.0620279 .1275165
1 216 | .0804418 .0467823 1.72 0.086 -.0112498 .1721333
1 217 | .0145024 .0521925 0.28 0.781 -.087793 .1167979
1 218 | .0264633 .0463757 0.57 0.568 -.0644314 .117358
1 219 | .0641743 .0456072 1.41 0.159 -.0252142 .1535627
1 220 | .0951595 .0502657 1.89 0.058 -.0033596 .1936785
1 221 | .0107249 .0475013 0.23 0.821 -.0823759 .1038257
1 222 | .0316701 .0488196 0.65 0.517 -.0640146 .1273548
1 223 | .0538677 .0459715 1.17 0.241 -.0362348 .1439702
1 224 | .0340289 .0468739 0.73 0.468 -.0578423 .1259001
1 225 | .0512848 .0564242 0.91 0.363 -.0593045 .1618742
1 226 | -.0781922 .0653899 -1.20 0.232 -.2063541 .0499697
1 227 | -.0777409 .064023 -1.21 0.225 -.2032236 .0477418
1 228 | -.0151378 .0573789 -0.26 0.792 -.1275984 .0973228
1 229 | .0143992 .0527498 0.27 0.785 -.0889885 .117787
1 230 | -.0535544 .0558035 -0.96 0.337 -.1629272 .0558184
1 231 | -.0305181 .0576062 -0.53 0.596 -.1434241 .0823878
1 232 | -.0066918 .0555004 -0.12 0.904 -.1154707 .1020871
1 233 | -.0700295 .0560464 -1.25 0.211 -.1798785 .0398195
1 234 | -.1021727 .0538551 -1.90 0.058 -.2077268 .0033814
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0296508 .0418785 -0.71 0.479 -.1117312 .0524297
1 212 | -.0752939 .0439703 -1.71 0.087 -.1614741 .0108862
1 213 | -.0982139 .0419644 -2.34 0.019 -.1804626 -.0159653
1 214 | -.062807 .0422108 -1.49 0.137 -.1455386 .0199245
1 215 | .0118684 .0410022 0.29 0.772 -.0684945 .0922313
1 216 | -.1139249 .0476705 -2.39 0.017 -.2073574 -.0204925
1 217 | -.0820489 .0461549 -1.78 0.075 -.1725109 .0084132
1 218 | -.0682418 .0427546 -1.60 0.110 -.1520393 .0155558
1 219 | -.0701672 .047698 -1.47 0.141 -.1636536 .0233192
1 220 | -.1085967 .0498462 -2.18 0.029 -.2062934 -.0108999
1 221 | -.1132572 .0442771 -2.56 0.011 -.2000387 -.0264758
1 222 | -.0884523 .0464924 -1.90 0.057 -.1795757 .0026712
1 223 | -.1222433 .0418471 -2.92 0.003 -.2042621 -.0402245
1 224 | -.085088 .0470914 -1.81 0.071 -.1773854 .0072094
1 225 | -.1138553 .0527489 -2.16 0.031 -.2172413 -.0104692
1 226 | -.0965582 .062607 -1.54 0.123 -.2192657 .0261493
1 227 | -.0698712 .0630313 -1.11 0.268 -.1934103 .053668
1 228 | -.1131335 .057844 -1.96 0.050 -.2265058 .0002387
1 229 | -.2195133 .0582946 -3.77 0.000 -.3337685 -.1052581
1 230 | -.1774083 .0610141 -2.91 0.004 -.2969938 -.0578229
1 231 | -.093205 .0637633 -1.46 0.144 -.2181788 .0317689
1 232 | -.1464685 .0620931 -2.36 0.018 -.2681687 -.0247684
1 233 | -.1491225 .0569624 -2.62 0.009 -.2607668 -.0374782
1 234 | -.1079834 .0556028 -1.94 0.052 -.2169629 .0009961
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0019981 .0229652 0.09 0.931 -.0430128 .047009
1 212 | -.014521 .0230005 -0.63 0.528 -.0596012 .0305591
1 213 | -.0381844 .023338 -1.64 0.102 -.0839261 .0075572
1 214 | .016962 .0228067 0.74 0.457 -.0277384 .0616623
1 215 | .0344469 .0228418 1.51 0.132 -.0103222 .079216
1 216 | .0358043 .0237907 1.50 0.132 -.0108246 .0824331
1 217 | .0153903 .0230672 0.67 0.505 -.0298207 .0606013
1 218 | .0107312 .0226917 0.47 0.636 -.0337437 .055206
1 219 | .0150135 .0225843 0.66 0.506 -.0292508 .0592779
1 220 | -.0263577 .024468 -1.08 0.281 -.074314 .0215987
1 221 | .0469619 .02424 1.94 0.053 -.0005475 .0944714
1 222 | .0193345 .0243663 0.79 0.427 -.0284227 .0670916
1 223 | -.0026247 .0252211 -0.10 0.917 -.0520571 .0468078
1 224 | -.0238163 .0243167 -0.98 0.327 -.0714761 .0238434
1 225 | -.0529876 .027192 -1.95 0.051 -.1062829 .0003077
1 226 | -.0094987 .0298597 -0.32 0.750 -.0680226 .0490253
1 227 | .0193778 .0301768 0.64 0.521 -.0397676 .0785232
1 228 | -.0515834 .0288168 -1.79 0.073 -.1080634 .0048965
1 229 | -.073683 .0278017 -2.65 0.008 -.1281734 -.0191927
1 230 | -.0120908 .0291559 -0.41 0.678 -.0692353 .0450536
1 231 | -.0928489 .0301529 -3.08 0.002 -.1519476 -.0337502
1 232 | -.1072748 .0303399 -3.54 0.000 -.1667398 -.0478097
1 233 | -.0750707 .0285029 -2.63 0.008 -.1309353 -.0192061
1 234 | -.0975229 .0286678 -3.40 0.001 -.1537108 -.041335
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 283,200
Group variable: intersecti~d Number of groups = 11,328
R-sq: Obs per group:
within = 0.0362 min = 25
between = 0.0770 avg = 25.0
overall = 0.0007 max = 25
F(100,11327) = 49.53
corr(u_i, Xb) = -0.1389 Prob > F = 0.0000
(Std. Err. adjusted for 11,328 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1606604 .0279115 -5.76 0.000 -.2153718 -.1059489
bike_route_tv | .0434151 .0344808 1.26 0.208 -.0241732 .1110035
flag_street_improv | -.1951685 .1345387 -1.45 0.147 -.4588877 .0685506
flag_left_turn | -.7423203 .1615586 -4.59 0.000 -1.059003 -.4256374
|
quarterly |
211 | -.013276 .0213199 -0.62 0.533 -.0550666 .0285146
212 | -.1253401 .0210032 -5.97 0.000 -.16651 -.0841702
213 | .1247333 .021666 5.76 0.000 .0822641 .1672025
214 | .0021001 .0210234 0.10 0.920 -.0391093 .0433095
215 | .0503476 .0218953 2.30 0.021 .0074291 .0932661
216 | -.110272 .0219087 -5.03 0.000 -.1532169 -.0673271
217 | .0556443 .0219087 2.54 0.011 .0126994 .0985893
218 | .0161511 .021457 0.75 0.452 -.0259082 .0582105
219 | .0281425 .0218874 1.29 0.199 -.0147607 .0710457
220 | -.1058765 .0222365 -4.76 0.000 -.1494639 -.062289
221 | .0733005 .0226257 3.24 0.001 .0289503 .1176507
222 | .1105011 .0224801 4.92 0.000 .0664363 .1545659
223 | .1745174 .0228589 7.63 0.000 .1297101 .2193248
224 | -.0719975 .0218187 -3.30 0.001 -.1147659 -.029229
225 | -.4228836 .0219916 -19.23 0.000 -.4659909 -.3797763
226 | -.7174036 .0221938 -32.32 0.000 -.7609072 -.6739
227 | -.6852763 .0227597 -30.11 0.000 -.7298891 -.6406634
228 | -.3639708 .0246211 -14.78 0.000 -.4122324 -.3157091
229 | -.0800744 .0260528 -3.07 0.002 -.1311423 -.0290064
230 | -.3399577 .02523 -13.47 0.000 -.3894128 -.2905025
231 | -.2238334 .0261439 -8.56 0.000 -.27508 -.1725868
232 | -.2846448 .0256871 -11.08 0.000 -.3349959 -.2342937
233 | -.1190634 .0259628 -4.59 0.000 -.169955 -.0681718
234 | -.2794752 .0256604 -10.89 0.000 -.3297739 -.2291764
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1470171 .0758204 1.94 0.053 -.0016041 .2956382
1 212 | .0880843 .0706868 1.25 0.213 -.050474 .2266426
1 213 | .1698342 .0769561 2.21 0.027 .0189869 .3206815
1 214 | .0618177 .0728265 0.85 0.396 -.0809348 .2045702
1 215 | .0353156 .0759636 0.46 0.642 -.1135862 .1842174
1 216 | .1397818 .0711094 1.97 0.049 .000395 .2791686
1 217 | .0079139 .0810222 0.10 0.922 -.1509036 .1667314
1 218 | .035457 .0711765 0.50 0.618 -.1040613 .1749752
1 219 | .0920413 .0719136 1.28 0.201 -.0489218 .2330045
1 220 | .1650539 .0764921 2.16 0.031 .0151161 .3149916
1 221 | -.0052593 .0739459 -0.07 0.943 -.150206 .1396874
1 222 | .022764 .0772272 0.29 0.768 -.1286146 .1741427
1 223 | .0493244 .0748574 0.66 0.510 -.097409 .1960579
1 224 | .0676667 .0696672 0.97 0.331 -.0688931 .2042264
1 225 | .1625816 .0745102 2.18 0.029 .0165286 .3086346
1 226 | .1101474 .0734224 1.50 0.134 -.0337732 .2540679
1 227 | .1013508 .0723704 1.40 0.161 -.0405077 .2432093
1 228 | .0833756 .0757199 1.10 0.271 -.0650486 .2317998
1 229 | .0573437 .0763425 0.75 0.453 -.0923008 .2069883
1 230 | .0338272 .0730215 0.46 0.643 -.1093077 .176962
1 231 | .0375209 .0767933 0.49 0.625 -.1130072 .1880491
1 232 | .0849066 .0749511 1.13 0.257 -.0620105 .2318237
1 233 | -.0370586 .0768336 -0.48 0.630 -.1876657 .1135485
1 234 | -.0229774 .0692738 -0.33 0.740 -.1587661 .1128113
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1829085 .2329333 -0.79 0.432 -.6394981 .2736812
1 212 | -.6825313 .2341839 -2.91 0.004 -1.141572 -.2234902
1 213 | -.3186934 .2316862 -1.38 0.169 -.7728386 .1354517
1 214 | -.3292986 .2319283 -1.42 0.156 -.7839182 .1253211
1 215 | .2218473 .2386757 0.93 0.353 -.2459984 .689693
1 216 | -.8047687 .2526128 -3.19 0.001 -1.299934 -.3096038
1 217 | -.3396597 .2554333 -1.33 0.184 -.8403533 .161034
1 218 | -.3447657 .2352525 -1.47 0.143 -.8059015 .1163701
1 219 | -.3208926 .2650223 -1.21 0.226 -.8403823 .1985971
1 220 | -.8154141 .2694591 -3.03 0.002 -1.343601 -.2872275
1 221 | -.4458017 .2441431 -1.83 0.068 -.9243645 .0327611
1 222 | -.2646367 .258721 -1.02 0.306 -.7717748 .2425013
1 223 | -.3531304 .2330388 -1.52 0.130 -.8099269 .1036661
1 224 | -.6576195 .2549187 -2.58 0.010 -1.157304 -.1579346
1 225 | -1.474182 .2617237 -5.63 0.000 -1.987206 -.9611577
1 226 | -1.964106 .286319 -6.86 0.000 -2.525341 -1.402871
1 227 | -1.813735 .2876314 -6.31 0.000 -2.377542 -1.249928
1 228 | -1.397399 .2887116 -4.84 0.000 -1.963324 -.8314747
1 229 | -1.370867 .2999761 -4.57 0.000 -1.958872 -.7828618
1 230 | -1.587262 .3015611 -5.26 0.000 -2.178374 -.9961497
1 231 | -1.098575 .3212755 -3.42 0.001 -1.728331 -.4688197
1 232 | -1.433338 .307446 -4.66 0.000 -2.035985 -.8306905
1 233 | -1.155723 .2921288 -3.96 0.000 -1.728346 -.5830997
1 234 | -1.284054 .2823209 -4.55 0.000 -1.837452 -.730656
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0035037 .0486503 0.07 0.943 -.0918594 .0988667
1 212 | -.0562185 .0470362 -1.20 0.232 -.1484177 .0359806
1 213 | -.0587024 .0506225 -1.16 0.246 -.1579314 .0405265
1 214 | .0395466 .0487767 0.81 0.418 -.0560643 .1351575
1 215 | .0925458 .0499214 1.85 0.064 -.0053089 .1904004
1 216 | .0533848 .0495804 1.08 0.282 -.0438014 .1505711
1 217 | .0490596 .0500394 0.98 0.327 -.0490263 .1471455
1 218 | .0295185 .0484159 0.61 0.542 -.065385 .124422
1 219 | .0428025 .0484559 0.88 0.377 -.0521794 .1377844
1 220 | -.0740167 .0501355 -1.48 0.140 -.1722909 .0242575
1 221 | .1288969 .0538957 2.39 0.017 .023252 .2345418
1 222 | .0728579 .0541817 1.34 0.179 -.0333476 .1790634
1 223 | .0340207 .0568787 0.60 0.550 -.0774715 .1455128
1 224 | -.0647757 .0501798 -1.29 0.197 -.1631369 .0335854
1 225 | -.1780131 .050764 -3.51 0.000 -.2775194 -.0785069
1 226 | -.1710643 .0510662 -3.35 0.001 -.2711629 -.0709658
1 227 | -.1247461 .05209 -2.39 0.017 -.2268516 -.0226406
1 228 | -.1631085 .0545281 -2.99 0.003 -.2699931 -.056224
1 229 | -.1610108 .0559345 -2.88 0.004 -.2706522 -.0513695
1 230 | -.0880146 .0556772 -1.58 0.114 -.1971516 .0211224
1 231 | -.2066912 .0577776 -3.58 0.000 -.3199452 -.0934371
1 232 | -.2350028 .0570992 -4.12 0.000 -.3469271 -.1230786
1 233 | -.162227 .0558689 -2.90 0.004 -.2717397 -.0527143
1 234 | -.218853 .0542758 -4.03 0.000 -.325243 -.1124631
|
_cons | 1.887655 .0154726 122.00 0.000 1.857326 1.917984
------------------------------+----------------------------------------------------------------
sigma_u | 1.8364797
sigma_e | 1.5179253
rho | .59411721 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_collision_count.rtf
dir : seeout
[ ]:
global outcome1 collision_count
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
display $outcome1 (exp(-.0545089)-1)*100
Outcome of Persons injured¶
[18]:
**************************************
global outcome1 personsinjured
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_xt_$outcome1
xtpoisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word replace ctitle(xtpoisson robust_se $outcome1)
xtreg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome1)
xtpoisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome2)
xtreg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome2)
xtpoisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome3)
xtreg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome3)
capture erase $filename.txt
note: 2032 groups (50800 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -227827.29
Iteration 1: log pseudolikelihood = -226293.56
Iteration 2: log pseudolikelihood = -226281.88
Iteration 3: log pseudolikelihood = -226281.88
Conditional fixed-effects Poisson regression Number of obs = 273,875
Group variable: intersection~d Number of groups = 10,955
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1486.86
Log pseudolikelihood = -226281.88 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
personsinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0993364 .0212518 -4.67 0.000 -.1409892 -.0576836
bike_route_tv | .0169446 .030656 0.55 0.580 -.0431401 .0770293
flag_street_improv | -.0271794 .0544744 -0.50 0.618 -.1339472 .0795884
flag_left_turn | -.2000665 .0659544 -3.03 0.002 -.3293348 -.0707983
|
quarterly |
211 | -.0625862 .0282409 -2.22 0.027 -.1179374 -.0072351
212 | -.1801585 .0294185 -6.12 0.000 -.2378177 -.1224993
213 | .0238 .0271054 0.88 0.380 -.0293257 .0769257
214 | .0212469 .027288 0.78 0.436 -.0322366 .0747304
215 | -.0473314 .0277716 -1.70 0.088 -.1017628 .0071
216 | -.2524087 .0298987 -8.44 0.000 -.311009 -.1938084
217 | -.0639969 .0289836 -2.21 0.027 -.1208038 -.0071901
218 | -.0732023 .0284907 -2.57 0.010 -.1290431 -.0173615
219 | -.0989151 .0287328 -3.44 0.001 -.1552303 -.0425998
220 | -.4091428 .0314237 -13.02 0.000 -.4707321 -.3475535
221 | -.1363011 .0296774 -4.59 0.000 -.1944678 -.0781344
222 | -.0894794 .028272 -3.16 0.002 -.1448916 -.0340672
223 | -.0811701 .0288264 -2.82 0.005 -.1376688 -.0246713
224 | -.2897016 .0298447 -9.71 0.000 -.3481962 -.231207
225 | -.3069078 .0318411 -9.64 0.000 -.3693152 -.2445004
226 | -.436274 .0324982 -13.42 0.000 -.4999693 -.3725786
227 | -.4813321 .032569 -14.78 0.000 -.5451661 -.417498
228 | -.2802515 .0311346 -9.00 0.000 -.3412741 -.2192289
229 | -.0640711 .0306429 -2.09 0.037 -.1241301 -.0040121
230 | -.1639101 .030904 -5.30 0.000 -.2244809 -.1033394
231 | -.1292725 .0314971 -4.10 0.000 -.1910057 -.0675393
232 | -.2178636 .0306264 -7.11 0.000 -.2778903 -.1578369
233 | -.0445547 .0305474 -1.46 0.145 -.1044264 .0153171
234 | -.088047 .0308937 -2.85 0.004 -.1485975 -.0274964
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0107466 .1179394 0.09 0.927 -.2204103 .2419035
1 212 | -.1401443 .1215263 -1.15 0.249 -.3783315 .0980428
1 213 | .0494835 .1120716 0.44 0.659 -.1701728 .2691397
1 214 | .0436363 .115705 0.38 0.706 -.1831413 .2704139
1 215 | -.0226801 .1031261 -0.22 0.826 -.2248035 .1794433
1 216 | .0232514 .1177431 0.20 0.843 -.2075208 .2540236
1 217 | -.2280281 .1169503 -1.95 0.051 -.4572465 .0011903
1 218 | .0410842 .1229332 0.33 0.738 -.1998604 .2820287
1 219 | .0450747 .1204397 0.37 0.708 -.1909829 .2811322
1 220 | -.0168692 .1367664 -0.12 0.902 -.2849263 .251188
1 221 | .025658 .1280048 0.20 0.841 -.2252268 .2765428
1 222 | -.0256133 .1169203 -0.22 0.827 -.2547729 .2035462
1 223 | -.0709335 .1100513 -0.64 0.519 -.2866302 .1447632
1 224 | -.0540261 .1248691 -0.43 0.665 -.2987649 .1907128
1 225 | .0752251 .1292382 0.58 0.561 -.1780771 .3285274
1 226 | -.2080613 .1386408 -1.50 0.133 -.4797923 .0636697
1 227 | -.2161362 .1406943 -1.54 0.124 -.4918921 .0596196
1 228 | -.1916398 .1261457 -1.52 0.129 -.4388809 .0556012
1 229 | -.0767554 .1196582 -0.64 0.521 -.3112812 .1577704
1 230 | -.183398 .1227648 -1.49 0.135 -.4240126 .0572165
1 231 | -.0553202 .1214597 -0.46 0.649 -.2933768 .1827364
1 232 | -.003128 .1264656 -0.02 0.980 -.2509961 .2447401
1 233 | -.1449611 .121715 -1.19 0.234 -.3835183 .093596
1 234 | -.1112191 .1197758 -0.93 0.353 -.3459754 .1235373
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0709455 .0965707 -0.73 0.463 -.2602205 .1183295
1 212 | -.0029879 .0964784 -0.03 0.975 -.192082 .1861063
1 213 | -.0539808 .0890238 -0.61 0.544 -.2284642 .1205025
1 214 | -.0951219 .100869 -0.94 0.346 -.2928215 .1025778
1 215 | .0476472 .0963489 0.49 0.621 -.1411932 .2364876
1 216 | -.1496643 .1139233 -1.31 0.189 -.3729498 .0736212
1 217 | -.2430561 .0978897 -2.48 0.013 -.4349164 -.0511958
1 218 | -.1388608 .0946283 -1.47 0.142 -.3243288 .0466071
1 219 | -.0679586 .1032253 -0.66 0.510 -.2702765 .1343593
1 220 | -.1565888 .1017455 -1.54 0.124 -.3560064 .0428287
1 221 | -.1303234 .1084111 -1.20 0.229 -.3428052 .0821583
1 222 | -.064418 .0994892 -0.65 0.517 -.2594133 .1305772
1 223 | -.1101424 .1012852 -1.09 0.277 -.3086578 .0883731
1 224 | -.0875194 .0987382 -0.89 0.375 -.2810427 .1060039
1 225 | -.1642324 .1059482 -1.55 0.121 -.3718872 .0434223
1 226 | -.1729489 .1245885 -1.39 0.165 -.417138 .0712401
1 227 | -.1735127 .115181 -1.51 0.132 -.3992633 .0522379
1 228 | -.1071064 .1040158 -1.03 0.303 -.3109737 .0967609
1 229 | -.1436833 .1068703 -1.34 0.179 -.3531452 .0657786
1 230 | -.1817729 .104207 -1.74 0.081 -.3860148 .0224691
1 231 | -.2027852 .1088513 -1.86 0.062 -.4161299 .0105595
1 232 | -.2040807 .1112859 -1.83 0.067 -.4221972 .0140357
1 233 | -.2229488 .1171734 -1.90 0.057 -.4526046 .0067069
1 234 | -.1613604 .1112979 -1.45 0.147 -.3795003 .0567795
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0630318 .0534574 1.18 0.238 -.0417428 .1678065
1 212 | .0608435 .0569784 1.07 0.286 -.0508321 .1725191
1 213 | .0285456 .0535817 0.53 0.594 -.0764725 .1335637
1 214 | .1210676 .0603677 2.01 0.045 .0027491 .2393861
1 215 | .0917051 .0541731 1.69 0.090 -.0144722 .1978824
1 216 | .027955 .0585851 0.48 0.633 -.0868698 .1427797
1 217 | .0922876 .054326 1.70 0.089 -.0141895 .1987646
1 218 | .0415264 .0560284 0.74 0.459 -.0682873 .15134
1 219 | .1389775 .0557426 2.49 0.013 .029724 .2482309
1 220 | .0909296 .0646564 1.41 0.160 -.0357947 .2176539
1 221 | .0696941 .0576543 1.21 0.227 -.0433064 .1826945
1 222 | .0420675 .0562814 0.75 0.455 -.0682419 .152377
1 223 | .0692797 .055087 1.26 0.209 -.0386889 .1772482
1 224 | .0959171 .0578201 1.66 0.097 -.0174083 .2092424
1 225 | .0012391 .0606527 0.02 0.984 -.117638 .1201161
1 226 | .0596315 .0642052 0.93 0.353 -.0662084 .1854715
1 227 | .0726894 .0639898 1.14 0.256 -.0527283 .1981071
1 228 | .008348 .0631341 0.13 0.895 -.1153926 .1320886
1 229 | .0313826 .0618259 0.51 0.612 -.089794 .1525592
1 230 | .0595242 .0586784 1.01 0.310 -.0554834 .1745318
1 231 | -.0167426 .0598647 -0.28 0.780 -.1340753 .1005901
1 232 | .0181885 .0608202 0.30 0.765 -.1010169 .1373939
1 233 | -.0072359 .0587094 -0.12 0.902 -.1223043 .1078325
1 234 | .0100456 .0602706 0.17 0.868 -.1080826 .1281737
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 273,875
Group variable: intersecti~d Number of groups = 10,955
R-sq: Obs per group:
within = 0.0069 min = 25
between = 0.0733 avg = 25.0
overall = 0.0005 max = 25
F(100,10954) = 14.83
corr(u_i, Xb) = -0.2164 Prob > F = 0.0000
(Std. Err. adjusted for 10,955 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
personsinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0691912 .0134414 -5.15 0.000 -.0955387 -.0428437
bike_route_tv | .010028 .0165743 0.61 0.545 -.0224606 .0425166
flag_street_improv | -.0409505 .0433553 -0.94 0.345 -.1259348 .0440337
flag_left_turn | -.2170351 .0623365 -3.48 0.001 -.3392258 -.0948444
|
quarterly |
211 | -.0367736 .016548 -2.22 0.026 -.0692107 -.0043364
212 | -.0988806 .0162967 -6.07 0.000 -.1308251 -.0669361
213 | .0141478 .0165559 0.85 0.393 -.0183047 .0466003
214 | .0121211 .0166499 0.73 0.467 -.0205158 .044758
215 | -.0279292 .0164157 -1.70 0.089 -.060107 .0042486
216 | -.1341536 .0160176 -8.38 0.000 -.1655509 -.1027563
217 | -.0374051 .016923 -2.21 0.027 -.0705772 -.004233
218 | -.0427785 .0165919 -2.58 0.010 -.0753016 -.0102554
219 | -.0572861 .0165287 -3.47 0.001 -.0896853 -.0248869
220 | -.2019118 .0157011 -12.86 0.000 -.2326887 -.1711348
221 | -.0771809 .0167324 -4.61 0.000 -.1099793 -.0443824
222 | -.0519349 .0163086 -3.18 0.001 -.0839027 -.0199671
223 | -.0473308 .0166961 -2.83 0.005 -.0800581 -.0146035
224 | -.1508012 .0157755 -9.56 0.000 -.1817239 -.1198784
225 | -.1581122 .0164063 -9.64 0.000 -.1902715 -.1259529
226 | -.2103716 .0158622 -13.26 0.000 -.2414643 -.1792789
227 | -.2269458 .015622 -14.53 0.000 -.2575678 -.1963238
228 | -.1451449 .0163528 -8.88 0.000 -.1771993 -.1130906
229 | -.0375285 .0176389 -2.13 0.033 -.072104 -.002953
230 | -.0899149 .0169392 -5.31 0.000 -.1231188 -.0567109
231 | -.0721176 .0174651 -4.13 0.000 -.1063523 -.0378829
232 | -.1156551 .0165086 -7.01 0.000 -.148015 -.0832952
233 | -.0261008 .0175923 -1.48 0.138 -.0605849 .0083833
234 | -.0496777 .0174044 -2.85 0.004 -.0837934 -.0155619
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0103586 .0596926 0.17 0.862 -.1066498 .1273669
1 212 | -.0398075 .0550927 -0.72 0.470 -.1477992 .0681842
1 213 | .0232688 .0598658 0.39 0.698 -.094079 .1406166
1 214 | .018459 .0625205 0.30 0.768 -.1040924 .1410104
1 215 | -.0078129 .0525504 -0.15 0.882 -.1108212 .0951954
1 216 | .0328041 .0545961 0.60 0.548 -.0742141 .1398222
1 217 | -.0948659 .0541466 -1.75 0.080 -.2010031 .0112713
1 218 | .0263475 .0624478 0.42 0.673 -.0960614 .1487564
1 219 | .0294037 .0614059 0.48 0.632 -.0909629 .1497703
1 220 | .0291127 .0581882 0.50 0.617 -.0849466 .143172
1 221 | .0237163 .0627961 0.38 0.706 -.0993754 .146808
1 222 | -.0040549 .0573775 -0.07 0.944 -.1165252 .1084154
1 223 | -.0264694 .0536779 -0.49 0.622 -.1316877 .078749
1 224 | .004253 .0561216 0.08 0.940 -.1057554 .1142614
1 225 | .0563449 .0585858 0.96 0.336 -.0584938 .1711835
1 226 | -.0223495 .0533291 -0.42 0.675 -.1268842 .0821853
1 227 | -.0180586 .052706 -0.34 0.732 -.1213719 .0852547
1 228 | -.0368175 .0529855 -0.69 0.487 -.1406786 .0670437
1 229 | -.0271246 .0572993 -0.47 0.636 -.1394416 .0851923
1 230 | -.0533922 .053791 -0.99 0.321 -.1588322 .0520478
1 231 | -.007823 .0569678 -0.14 0.891 -.1194902 .1038442
1 232 | .0231097 .057719 0.40 0.689 -.0900299 .1362493
1 233 | -.0551265 .0568799 -0.97 0.332 -.1666213 .0563684
1 234 | -.0351185 .0549894 -0.64 0.523 -.1429076 .0726706
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2100358 .1866532 -1.13 0.260 -.5759098 .1558381
1 212 | -.2460842 .1838422 -1.34 0.181 -.606448 .1142796
1 213 | -.0662187 .1789805 -0.37 0.711 -.4170529 .2846155
1 214 | -.1273988 .2022577 -0.63 0.529 -.5238603 .2690627
1 215 | .0509697 .1987361 0.26 0.798 -.3385889 .4405282
1 216 | -.5595061 .1896391 -2.95 0.003 -.931233 -.1877791
1 217 | -.5148993 .1727246 -2.98 0.003 -.8534707 -.1763278
1 218 | -.3520674 .1767402 -1.99 0.046 -.6985102 -.0056247
1 219 | -.2330945 .1972297 -1.18 0.237 -.6197004 .1535114
1 220 | -.6963207 .1657469 -4.20 0.000 -1.021215 -.3714268
1 221 | -.4032875 .1964368 -2.05 0.040 -.788339 -.018236
1 222 | -.2480047 .1886805 -1.31 0.189 -.6178525 .1218431
1 223 | -.3154257 .1924849 -1.64 0.101 -.6927309 .0618795
1 224 | -.5062759 .1744818 -2.90 0.004 -.8482917 -.16426
1 225 | -.6380524 .1731138 -3.69 0.000 -.9773867 -.2987182
1 226 | -.7532148 .1861804 -4.05 0.000 -1.118162 -.3882676
1 227 | -.7867245 .179154 -4.39 0.000 -1.137899 -.4355504
1 228 | -.556163 .1771307 -3.14 0.002 -.903371 -.2089549
1 229 | -.3884817 .1910031 -2.03 0.042 -.7628822 -.0140812
1 230 | -.5492852 .1814729 -3.03 0.002 -.9050048 -.1935656
1 231 | -.5589272 .1845486 -3.03 0.002 -.9206757 -.1971787
1 232 | -.6317088 .1855513 -3.40 0.001 -.995423 -.2679947
1 233 | -.514488 .2040948 -2.52 0.012 -.9145507 -.1144253
1 234 | -.4608709 .1983193 -2.32 0.020 -.8496126 -.0721292
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .039087 .0334716 1.17 0.243 -.0265234 .1046974
1 212 | .0321203 .0335502 0.96 0.338 -.0336442 .0978848
1 213 | .0196546 .0346988 0.57 0.571 -.0483612 .0876705
1 214 | .0842359 .0413526 2.04 0.042 .0031773 .1652945
1 215 | .0572501 .0347107 1.65 0.099 -.0107891 .1252892
1 216 | .0142935 .0327403 0.44 0.662 -.0498833 .0784704
1 217 | .0579535 .0340566 1.70 0.089 -.0088035 .1247105
1 218 | .0261741 .0345059 0.76 0.448 -.0414637 .0938119
1 219 | .0858411 .035349 2.43 0.015 .0165506 .1551315
1 220 | .0396571 .0335819 1.18 0.238 -.0261694 .1054837
1 221 | .0408068 .0347122 1.18 0.240 -.0272355 .108849
1 222 | .0258649 .0342137 0.76 0.450 -.0412001 .09293
1 223 | .0428485 .0340823 1.26 0.209 -.023959 .109656
1 224 | .0474942 .0326713 1.45 0.146 -.0165474 .1115359
1 225 | .0021899 .0322362 0.07 0.946 -.0609989 .0653788
1 226 | .0253018 .0323456 0.78 0.434 -.0381015 .0887051
1 227 | .0299326 .0321018 0.93 0.351 -.0329928 .092858
1 228 | .0067713 .0339151 0.20 0.842 -.0597085 .073251
1 229 | .0220924 .0374453 0.59 0.555 -.0513072 .095492
1 230 | .0367964 .0339956 1.08 0.279 -.0298412 .103434
1 231 | -.0022643 .0342582 -0.07 0.947 -.0694165 .0648878
1 232 | .0155576 .0338684 0.46 0.646 -.0508306 .0819459
1 233 | .0023768 .0350873 0.07 0.946 -.0664006 .0711543
1 234 | .0116849 .0353806 0.33 0.741 -.0576675 .0810374
|
_cons | .6228891 .0107553 57.91 0.000 .6018069 .6439714
------------------------------+----------------------------------------------------------------
sigma_u | .59928214
sigma_e | 1.0239404
rho | .25514413 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
note: 7118 groups (177950 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -48063.045
Iteration 1: log pseudolikelihood = -47773.721
Iteration 2: log pseudolikelihood = -47766.081
Iteration 3: log pseudolikelihood = -47766.042
Iteration 4: log pseudolikelihood = -47766.042
Conditional fixed-effects Poisson regression Number of obs = 146,725
Group variable: intersection~d Number of groups = 5,869
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 319.12
Log pseudolikelihood = -47766.042 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_personsinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1107191 .0539609 -2.05 0.040 -.2164806 -.0049576
bike_route_tv | -.0044524 .0789183 -0.06 0.955 -.1591294 .1502245
flag_street_improv | -.1060201 .1698371 -0.62 0.532 -.4388947 .2268546
flag_left_turn | -.2495049 .1564566 -1.59 0.111 -.5561541 .0571444
|
quarterly |
211 | -.1980299 .0840238 -2.36 0.018 -.3627135 -.0333464
212 | -.3503779 .0946516 -3.70 0.000 -.5358916 -.1648642
213 | -.1645664 .0842942 -1.95 0.051 -.32978 .0006473
214 | -.1611111 .0831806 -1.94 0.053 -.3241421 .0019199
215 | -.2010203 .0893736 -2.25 0.024 -.3761894 -.0258512
216 | -.4198153 .091595 -4.58 0.000 -.5993381 -.2402925
217 | -.1051459 .0854505 -1.23 0.219 -.2726258 .0623339
218 | -.1174852 .0846906 -1.39 0.165 -.2834758 .0485054
219 | -.2553899 .0885129 -2.89 0.004 -.428872 -.0819078
220 | -.6035422 .0991976 -6.08 0.000 -.797966 -.4091183
221 | -.2099195 .0873093 -2.40 0.016 -.3810425 -.0387964
222 | -.1275585 .0818598 -1.56 0.119 -.2880007 .0328837
223 | -.2925626 .0873677 -3.35 0.001 -.4638001 -.1213251
224 | -.3922478 .0867264 -4.52 0.000 -.5622284 -.2222671
225 | -.3347087 .0924736 -3.62 0.000 -.5159535 -.1534638
226 | -.358683 .0922829 -3.89 0.000 -.5395543 -.1778118
227 | -.5329004 .0966191 -5.52 0.000 -.7222702 -.3435305
228 | -.4083958 .0937283 -4.36 0.000 -.5921 -.2246917
229 | -.1315604 .0834485 -1.58 0.115 -.2951164 .0319956
230 | -.1499063 .0858451 -1.75 0.081 -.3181597 .018347
231 | -.2698487 .0860699 -3.14 0.002 -.4385426 -.1011548
232 | -.3126578 .0872638 -3.58 0.000 -.4836917 -.1416238
233 | -.1234403 .0871443 -1.42 0.157 -.29424 .0473593
234 | -.0480714 .0869755 -0.55 0.580 -.2185402 .1223974
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.376972 .4017153 -0.94 0.348 -1.16432 .4103756
1 212 | -.5897572 .3623562 -1.63 0.104 -1.299962 .120448
1 213 | -.5326933 .367916 -1.45 0.148 -1.253795 .1884088
1 214 | -.3151549 .3896715 -0.81 0.419 -1.078897 .4485872
1 215 | -.5246797 .3227973 -1.63 0.104 -1.157351 .1079914
1 216 | -.6816305 .4224779 -1.61 0.107 -1.509672 .1464109
1 217 | -.8119014 .3826272 -2.12 0.034 -1.561837 -.0619658
1 218 | -.711531 .3609897 -1.97 0.049 -1.419058 -.0040041
1 219 | .3678001 .3555609 1.03 0.301 -.3290866 1.064687
1 220 | -.4840177 .4919323 -0.98 0.325 -1.448187 .4801519
1 221 | .0395944 .3880035 0.10 0.919 -.7208786 .8000674
1 222 | -.0666482 .3411352 -0.20 0.845 -.735261 .6019646
1 223 | -.585445 .4058359 -1.44 0.149 -1.380869 .2099787
1 224 | -1.27104 .5108679 -2.49 0.013 -2.272323 -.2697572
1 225 | .0233609 .434277 0.05 0.957 -.8278065 .8745282
1 226 | -.3889722 .3606103 -1.08 0.281 -1.095755 .317811
1 227 | -.781027 .4045506 -1.93 0.054 -1.573931 .0118776
1 228 | -.9451365 .4165094 -2.27 0.023 -1.76148 -.1287931
1 229 | -.3077662 .3850052 -0.80 0.424 -1.062363 .4468301
1 230 | -.5285865 .3968008 -1.33 0.183 -1.306302 .2491287
1 231 | .155005 .3538605 0.44 0.661 -.5385489 .8485588
1 232 | -.2368829 .4083137 -0.58 0.562 -1.037163 .5633973
1 233 | -.7004645 .3665422 -1.91 0.056 -1.418874 .0179449
1 234 | -.2284146 .4013686 -0.57 0.569 -1.015083 .5582535
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1017211 .2664118 -0.38 0.703 -.6238786 .4204364
1 212 | .0911436 .2654981 0.34 0.731 -.4292232 .6115103
1 213 | .0813276 .2830231 0.29 0.774 -.4733874 .6360426
1 214 | -.1231885 .2783022 -0.44 0.658 -.6686509 .4222738
1 215 | .1282623 .2493834 0.51 0.607 -.3605202 .6170448
1 216 | -.4069539 .3023916 -1.35 0.178 -.9996306 .1857228
1 217 | -.4296075 .2637734 -1.63 0.103 -.9465939 .0873789
1 218 | -.0218383 .2798567 -0.08 0.938 -.5703474 .5266708
1 219 | .0639924 .2747141 0.23 0.816 -.4744373 .602422
1 220 | -.5835622 .2405531 -2.43 0.015 -1.055038 -.1120867
1 221 | -.4947056 .3067395 -1.61 0.107 -1.095904 .1064927
1 222 | .2203385 .2525192 0.87 0.383 -.2745901 .7152671
1 223 | -.0930989 .2690602 -0.35 0.729 -.6204473 .4342495
1 224 | -.2934429 .297073 -0.99 0.323 -.8756953 .2888095
1 225 | -.3777943 .2935421 -1.29 0.198 -.9531262 .1975376
1 226 | -.2134945 .3428852 -0.62 0.534 -.8855372 .4585482
1 227 | -.400106 .3356927 -1.19 0.233 -1.058052 .2578397
1 228 | .055788 .2698352 0.21 0.836 -.4730792 .5846552
1 229 | -.033036 .2789244 -0.12 0.906 -.5797177 .5136457
1 230 | -.5862047 .2767086 -2.12 0.034 -1.128544 -.0438658
1 231 | -.4804431 .2838469 -1.69 0.091 -1.036773 .0758865
1 232 | -.2819363 .3343394 -0.84 0.399 -.9372295 .3733568
1 233 | -.3748909 .2978612 -1.26 0.208 -.9586881 .2089063
1 234 | -.2925653 .3305055 -0.89 0.376 -.9403442 .3552136
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | -.0269206 .159813 -0.17 0.866 -.3401482 .2863071
1 212 | .3063644 .1704416 1.80 0.072 -.027695 .6404238
1 213 | -.0063716 .1616319 -0.04 0.969 -.3231642 .310421
1 214 | .3009159 .1554028 1.94 0.053 -.003668 .6054997
1 215 | .1004503 .1596426 0.63 0.529 -.2124434 .413344
1 216 | .1065479 .1817384 0.59 0.558 -.2496527 .4627485
1 217 | -.0117236 .1574763 -0.07 0.941 -.3203714 .2969243
1 218 | -.0976488 .1636258 -0.60 0.551 -.4183494 .2230518
1 219 | .2187986 .1625456 1.35 0.178 -.0997849 .5373821
1 220 | .101935 .1841191 0.55 0.580 -.2589318 .4628019
1 221 | .2515456 .1640771 1.53 0.125 -.0700396 .5731308
1 222 | .0289971 .1621973 0.18 0.858 -.2889037 .3468979
1 223 | .1713883 .1678764 1.02 0.307 -.1576433 .5004199
1 224 | .0423251 .1718745 0.25 0.805 -.2945429 .379193
1 225 | -.0045407 .1774131 -0.03 0.980 -.3522639 .3431825
1 226 | .2034283 .1695913 1.20 0.230 -.1289645 .5358212
1 227 | .3131961 .1763655 1.78 0.076 -.0324739 .6588662
1 228 | .1385195 .201958 0.69 0.493 -.2573109 .5343499
1 229 | .1855711 .1623549 1.14 0.253 -.1326386 .5037808
1 230 | .1024869 .1653372 0.62 0.535 -.221568 .4265418
1 231 | .209339 .1644815 1.27 0.203 -.1130388 .5317168
1 232 | .1333844 .1724578 0.77 0.439 -.2046267 .4713955
1 233 | .0132089 .1604029 0.08 0.934 -.3011749 .3275927
1 234 | -.1125838 .1721232 -0.65 0.513 -.4499391 .2247716
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 146,725
Group variable: intersecti~d Number of groups = 5,869
R-sq: Obs per group:
within = 0.0023 min = 25
between = 0.0174 avg = 25.0
overall = 0.0002 max = 25
F(100,5868) = 3.17
corr(u_i, Xb) = -0.1908 Prob > F = 0.0000
(Std. Err. adjusted for 5,869 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_personsinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.014535 .0072189 -2.01 0.044 -.0286866 -.0003833
bike_route_tv | -.000199 .0098561 -0.02 0.984 -.0195206 .0191225
flag_street_improv | -.0186768 .0280026 -0.67 0.505 -.0735721 .0362185
flag_left_turn | -.0482941 .0271725 -1.78 0.076 -.1015621 .004974
|
quarterly |
211 | -.0285232 .0122197 -2.33 0.020 -.0524783 -.0045681
212 | -.0469028 .0126246 -3.72 0.000 -.0716516 -.0221539
213 | -.0240043 .0123996 -1.94 0.053 -.0483121 .0003035
214 | -.0238554 .0123268 -1.94 0.053 -.0480206 .0003098
215 | -.0288291 .0128359 -2.25 0.025 -.0539923 -.0036659
216 | -.0544491 .0119836 -4.54 0.000 -.0779414 -.0309568
217 | -.0162536 .0128121 -1.27 0.205 -.04137 .0088629
218 | -.0176478 .0126838 -1.39 0.164 -.0425127 .0072171
219 | -.0359619 .0125512 -2.87 0.004 -.0605669 -.0113569
220 | -.0718865 .0117774 -6.10 0.000 -.0949746 -.0487985
221 | -.0304818 .01253 -2.43 0.015 -.0550452 -.0059184
222 | -.0191343 .0122706 -1.56 0.119 -.0431892 .0049207
223 | -.0404201 .0121441 -3.33 0.001 -.0642271 -.0166131
224 | -.0516208 .0115884 -4.45 0.000 -.0743384 -.0289032
225 | -.0451898 .0123697 -3.65 0.000 -.069439 -.0209407
226 | -.0477717 .012253 -3.90 0.000 -.0717922 -.0237513
227 | -.0649946 .0117824 -5.52 0.000 -.0880926 -.0418967
228 | -.0527894 .0121136 -4.36 0.000 -.0765365 -.0290423
229 | -.0201077 .0123163 -1.63 0.103 -.0442522 .0040368
230 | -.0227942 .0124994 -1.82 0.068 -.0472975 .0017092
231 | -.0374927 .0119727 -3.13 0.002 -.0609636 -.0140218
232 | -.0423115 .0119015 -3.56 0.000 -.0656428 -.0189803
233 | -.0191052 .0127525 -1.50 0.134 -.0441048 .0058943
234 | -.0084375 .0130987 -0.64 0.520 -.0341158 .0172408
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.0602563 .0649964 -0.93 0.354 -.1876732 .0671606
1 212 | -.0815179 .0595815 -1.37 0.171 -.1983197 .0352839
1 213 | -.0783401 .0610062 -1.28 0.199 -.1979348 .0412546
1 214 | -.0557109 .0673511 -0.83 0.408 -.1877438 .0763221
1 215 | -.077776 .054573 -1.43 0.154 -.1847591 .0292071
1 216 | -.0819734 .0596662 -1.37 0.170 -.1989412 .0349944
1 217 | -.1048023 .0597378 -1.75 0.079 -.2219104 .0123058
1 218 | -.0956203 .0588191 -1.63 0.104 -.2109274 .0196867
1 219 | .0652426 .0772841 0.84 0.399 -.0862628 .216748
1 220 | -.0632641 .0624624 -1.01 0.311 -.1857134 .0591853
1 221 | -.0016439 .0737198 -0.02 0.982 -.1461618 .1428741
1 222 | -.0168616 .0649072 -0.26 0.795 -.1441037 .1103804
1 223 | -.0802738 .0604606 -1.33 0.184 -.1987989 .0382513
1 224 | -.1122078 .0582927 -1.92 0.054 -.2264829 .0020673
1 225 | -.0107367 .0734336 -0.15 0.884 -.1546936 .1332202
1 226 | -.0603546 .0594024 -1.02 0.310 -.1768053 .056096
1 227 | -.0856946 .0578425 -1.48 0.139 -.1990872 .027698
1 228 | -.098558 .0585838 -1.68 0.093 -.2134039 .0162878
1 229 | -.0540032 .0661222 -0.82 0.414 -.183627 .0756206
1 230 | -.0770232 .0629065 -1.22 0.221 -.2003432 .0462968
1 231 | .0132332 .0680756 0.19 0.846 -.12022 .1466864
1 232 | -.0438803 .064798 -0.68 0.498 -.1709083 .0831476
1 233 | -.0924363 .0596973 -1.55 0.122 -.209465 .0245924
1 234 | -.0418429 .0692526 -0.60 0.546 -.1776035 .0939178
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.070838 .0827471 -0.86 0.392 -.2330527 .0913768
1 212 | -.030894 .0876819 -0.35 0.725 -.2027828 .1409948
1 213 | -.0107444 .0961222 -0.11 0.911 -.1991792 .1776905
1 214 | -.0614398 .0902692 -0.68 0.496 -.2384006 .115521
1 215 | .0011432 .0857744 0.01 0.989 -.1670062 .1692926
1 216 | -.1553487 .079193 -1.96 0.050 -.3105961 -.0001012
1 217 | -.1401556 .0741406 -1.89 0.059 -.2854986 .0051874
1 218 | -.0395241 .0914939 -0.43 0.666 -.2188858 .1398376
1 219 | -.0177562 .0934068 -0.19 0.849 -.2008679 .1653556
1 220 | -.1864548 .0645762 -2.89 0.004 -.3130478 -.0598617
1 221 | -.1553237 .0808612 -1.92 0.055 -.3138415 .0031941
1 222 | .0524315 .0933607 0.56 0.574 -.1305898 .2354528
1 223 | -.0785985 .0810256 -0.97 0.332 -.2374385 .0802415
1 224 | -.1354493 .0799759 -1.69 0.090 -.2922316 .0213329
1 225 | -.1438956 .0763758 -1.88 0.060 -.2936202 .005829
1 226 | -.1130686 .0908365 -1.24 0.213 -.2911416 .0650045
1 227 | -.1580294 .0822263 -1.92 0.055 -.3192233 .0031644
1 228 | -.0632305 .0794497 -0.80 0.426 -.2189811 .0925201
1 229 | -.0404094 .0918564 -0.44 0.660 -.2204818 .139663
1 230 | -.1715739 .074737 -2.30 0.022 -.318086 -.0250618
1 231 | -.1577908 .0755612 -2.09 0.037 -.3059186 -.0096631
1 232 | -.1264689 .0887598 -1.42 0.154 -.3004708 .0475331
1 233 | -.1325571 .0831575 -1.59 0.111 -.2955765 .0304622
1 234 | -.1083294 .0950362 -1.14 0.254 -.2946353 .0779765
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0012273 .0221904 0.06 0.956 -.042274 .0447287
1 212 | .0431399 .0244676 1.76 0.078 -.0048256 .0911055
1 213 | .0027344 .0228031 0.12 0.905 -.041968 .0474368
1 214 | .0472672 .0245837 1.92 0.055 -.000926 .0954604
1 215 | .0165385 .0230342 0.72 0.473 -.0286169 .061694
1 216 | .018559 .0229229 0.81 0.418 -.0263782 .0634963
1 217 | .0028523 .0225277 0.13 0.899 -.0413103 .047015
1 218 | -.0085767 .0228373 -0.38 0.707 -.0533463 .0361929
1 219 | .0319611 .0242882 1.32 0.188 -.0156527 .079575
1 220 | .0183755 .0213316 0.86 0.389 -.0234422 .0601932
1 221 | .0384618 .0247408 1.55 0.120 -.0100393 .0869628
1 222 | .0056871 .0237788 0.24 0.811 -.0409281 .0523023
1 223 | .0261234 .0233849 1.12 0.264 -.0197196 .0719663
1 224 | .0124148 .0216358 0.57 0.566 -.0299992 .0548289
1 225 | .0062525 .0224978 0.28 0.781 -.0378515 .0503565
1 226 | .0296275 .0231072 1.28 0.200 -.0156712 .0749261
1 227 | .0397466 .0226802 1.75 0.080 -.0047149 .0842081
1 228 | .0219649 .0250653 0.88 0.381 -.0271724 .0711022
1 229 | .0288617 .0245942 1.17 0.241 -.0193521 .0770755
1 230 | .0183834 .023511 0.78 0.434 -.0277068 .0644737
1 231 | .0312521 .0233758 1.34 0.181 -.0145732 .0770773
1 232 | .0217494 .0231536 0.94 0.348 -.0236401 .067139
1 233 | .0070474 .0225373 0.31 0.755 -.0371341 .0512289
1 234 | -.0105405 .0237442 -0.44 0.657 -.0570878 .0360068
|
_cons | .1624926 .0082478 19.70 0.000 .1463238 .1786613
------------------------------+----------------------------------------------------------------
sigma_u | .13404789
sigma_e | .51071819
rho | .06445019 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
note: 2107 groups (52675 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -210067.46
Iteration 1: log pseudolikelihood = -208679.4
Iteration 2: log pseudolikelihood = -208667.61
Iteration 3: log pseudolikelihood = -208667.61
Conditional fixed-effects Poisson regression Number of obs = 272,000
Group variable: intersection~d Number of groups = 10,880
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1393.31
Log pseudolikelihood = -208667.61 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_personsinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0979611 .0221491 -4.42 0.000 -.1413726 -.0545496
bike_route_tv | .0193356 .0316064 0.61 0.541 -.0426118 .0812829
flag_street_improv | -.0166996 .0556938 -0.30 0.764 -.1258575 .0924583
flag_left_turn | -.1925509 .0674734 -2.85 0.004 -.3247964 -.0603055
|
quarterly |
211 | -.0427114 .0298106 -1.43 0.152 -.1011392 .0157163
212 | -.1556227 .0308268 -5.05 0.000 -.2160421 -.0952032
213 | .0506036 .028834 1.75 0.079 -.00591 .1071172
214 | .0472931 .0291649 1.62 0.105 -.0098692 .1044553
215 | -.025017 .0294945 -0.85 0.396 -.0828252 .0327912
216 | -.2283083 .0313483 -7.28 0.000 -.2897498 -.1668669
217 | -.0575145 .0305002 -1.89 0.059 -.1172937 .0022648
218 | -.0663205 .0299924 -2.21 0.027 -.1251046 -.0075365
219 | -.0760764 .0304865 -2.50 0.013 -.1358289 -.016324
220 | -.381522 .0330692 -11.54 0.000 -.4463364 -.3167076
221 | -.1250873 .0312307 -4.01 0.000 -.1862985 -.0638762
222 | -.08348 .030155 -2.77 0.006 -.1425828 -.0243772
223 | -.0514543 .0302824 -1.70 0.089 -.1108068 .0078982
224 | -.2741844 .0316226 -8.67 0.000 -.3361636 -.2122052
225 | -.3024199 .0336328 -8.99 0.000 -.3683389 -.2365008
226 | -.4487897 .0342649 -13.10 0.000 -.5159476 -.3816318
227 | -.4733957 .0343625 -13.78 0.000 -.5407449 -.4060464
228 | -.2613216 .0324594 -8.05 0.000 -.3249408 -.1977024
229 | -.0535673 .0325099 -1.65 0.099 -.1172855 .010151
230 | -.1658997 .0323686 -5.13 0.000 -.229341 -.1024584
231 | -.108594 .033255 -3.27 0.001 -.1737727 -.0434153
232 | -.2035429 .032012 -6.36 0.000 -.2662853 -.1408005
233 | -.0324745 .0323258 -1.00 0.315 -.0958319 .0308829
234 | -.0942066 .0320723 -2.94 0.003 -.1570671 -.031346
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0759826 .1103668 0.69 0.491 -.1403323 .2922975
1 212 | -.0661072 .1240236 -0.53 0.594 -.3091889 .1769745
1 213 | .1340733 .1159328 1.16 0.247 -.0931507 .3612974
1 214 | .1059014 .1179088 0.90 0.369 -.1251956 .3369984
1 215 | .0555424 .1075635 0.52 0.606 -.1552782 .2663631
1 216 | .1193955 .1226017 0.97 0.330 -.1208993 .3596904
1 217 | -.1389594 .1249063 -1.11 0.266 -.3837713 .1058524
1 218 | .1464689 .1250733 1.17 0.242 -.0986703 .391608
1 219 | -.0217563 .1204712 -0.18 0.857 -.2578756 .2143629
1 220 | .0557396 .1379805 0.40 0.686 -.2146972 .3261764
1 221 | .0254278 .1354872 0.19 0.851 -.2401222 .2909779
1 222 | -.0154047 .1252133 -0.12 0.902 -.2608183 .2300088
1 223 | .0073084 .1145248 0.06 0.949 -.2171561 .2317728
1 224 | .077067 .1264527 0.61 0.542 -.1707758 .3249098
1 225 | .0880302 .1292513 0.68 0.496 -.1652977 .3413581
1 226 | -.1746375 .1491676 -1.17 0.242 -.4670006 .1177257
1 227 | -.1258796 .1468928 -0.86 0.391 -.4137841 .1620249
1 228 | -.087373 .128763 -0.68 0.497 -.3397439 .164998
1 229 | -.0321851 .119451 -0.27 0.788 -.2663047 .2019345
1 230 | -.1214167 .1234158 -0.98 0.325 -.3633072 .1204738
1 231 | -.095239 .1250967 -0.76 0.446 -.340424 .1499459
1 232 | .0422613 .1257212 0.34 0.737 -.2041477 .2886703
1 233 | -.0594275 .1246434 -0.48 0.634 -.3037242 .1848691
1 234 | -.0868912 .1210893 -0.72 0.473 -.3242217 .1504394
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0637951 .102587 -0.62 0.534 -.264862 .1372718
1 212 | -.0163189 .1013006 -0.16 0.872 -.2148644 .1822267
1 213 | -.0709416 .0991122 -0.72 0.474 -.2651979 .1233146
1 214 | -.0885127 .1055091 -0.84 0.402 -.2953068 .1182814
1 215 | .0379562 .1082891 0.35 0.726 -.1742865 .250199
1 216 | -.114428 .1235439 -0.93 0.354 -.3565696 .1277137
1 217 | -.2145532 .1054173 -2.04 0.042 -.4211673 -.0079391
1 218 | -.1572537 .1034299 -1.52 0.128 -.3599726 .0454652
1 219 | -.0878436 .1165345 -0.75 0.451 -.3162471 .1405599
1 220 | -.105805 .1111504 -0.95 0.341 -.3236557 .1120458
1 221 | -.0782374 .1181448 -0.66 0.508 -.3097968 .1533221
1 222 | -.1212155 .1097496 -1.10 0.269 -.3363207 .0938897
1 223 | -.1093657 .109084 -1.00 0.316 -.3231665 .104435
1 224 | -.0578075 .1069426 -0.54 0.589 -.2674111 .1517961
1 225 | -.1312526 .1204059 -1.09 0.276 -.3672438 .1047386
1 226 | -.167265 .1258504 -1.33 0.184 -.4139273 .0793973
1 227 | -.1385712 .1246433 -1.11 0.266 -.3828675 .1057252
1 228 | -.132621 .1050948 -1.26 0.207 -.3386031 .073361
1 229 | -.1627782 .1151908 -1.41 0.158 -.3885481 .0629917
1 230 | -.1242257 .1129687 -1.10 0.271 -.3456403 .0971889
1 231 | -.1628667 .1149773 -1.42 0.157 -.3882179 .0624846
1 232 | -.190627 .1156327 -1.65 0.099 -.4172629 .0360089
1 233 | -.1993851 .1192154 -1.67 0.094 -.4330429 .0342727
1 234 | -.1398381 .1125652 -1.24 0.214 -.3604618 .0807856
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0743633 .0571081 1.30 0.193 -.0375665 .1862931
1 212 | .0236034 .0607505 0.39 0.698 -.0954654 .1426722
1 213 | .0327043 .0575679 0.57 0.570 -.0801268 .1455353
1 214 | .0954219 .0668886 1.43 0.154 -.0356774 .2265211
1 215 | .0903708 .0585217 1.54 0.123 -.0243297 .2050713
1 216 | .0173903 .0627791 0.28 0.782 -.1056545 .1404351
1 217 | .106671 .0585559 1.82 0.069 -.0080965 .2214386
1 218 | .0605507 .0604037 1.00 0.316 -.0578383 .1789397
1 219 | .1274831 .0598325 2.13 0.033 .0102135 .2447527
1 220 | .0894061 .0697945 1.28 0.200 -.0473885 .2262008
1 221 | .0404985 .0617763 0.66 0.512 -.0805808 .1615778
1 222 | .044326 .0601571 0.74 0.461 -.0735798 .1622318
1 223 | .055905 .058152 0.96 0.336 -.0580707 .1698808
1 224 | .1028039 .0620813 1.66 0.098 -.0188733 .2244811
1 225 | .0021889 .0653232 0.03 0.973 -.1258421 .13022
1 226 | .0328242 .0683047 0.48 0.631 -.1010505 .166699
1 227 | .0327211 .0681907 0.48 0.631 -.1009302 .1663725
1 228 | -.0106498 .0638594 -0.17 0.868 -.1358119 .1145124
1 229 | .0068171 .0660165 0.10 0.918 -.1225728 .136207
1 230 | .0528797 .0617031 0.86 0.391 -.0680561 .1738156
1 231 | -.0515098 .0629892 -0.82 0.413 -.1749663 .0719466
1 232 | .0010683 .0631406 0.02 0.987 -.1226851 .1248217
1 233 | -.010124 .0628867 -0.16 0.872 -.1333798 .1131317
1 234 | .0289444 .063056 0.46 0.646 -.094643 .1525319
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 272,000
Group variable: intersecti~d Number of groups = 10,880
R-sq: Obs per group:
within = 0.0062 min = 25
between = 0.0762 avg = 25.0
overall = 0.0002 max = 25
F(100,10879) = 14.08
corr(u_i, Xb) = -0.1996 Prob > F = 0.0000
(Std. Err. adjusted for 10,880 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_personsinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0602529 .0121787 -4.95 0.000 -.0841254 -.0363804
bike_route_tv | .0103102 .015028 0.69 0.493 -.0191473 .0397678
flag_street_improv | -.0286576 .0387838 -0.74 0.460 -.1046809 .0473657
flag_left_turn | -.184907 .0551573 -3.35 0.001 -.2930252 -.0767887
|
quarterly |
211 | -.0222767 .0153281 -1.45 0.146 -.0523227 .0077692
212 | -.0752364 .0150042 -5.01 0.000 -.1046474 -.0458253
213 | .0266574 .0155237 1.72 0.086 -.0037718 .0570866
214 | .0246355 .0156892 1.57 0.116 -.0061182 .0553892
215 | -.0132051 .0153195 -0.86 0.389 -.0432341 .0168238
216 | -.1069007 .0147258 -7.26 0.000 -.135766 -.0780354
217 | -.0294759 .0155309 -1.90 0.058 -.0599192 .0009673
218 | -.0341151 .0152348 -2.24 0.025 -.0639781 -.0042521
219 | -.0387291 .0153898 -2.52 0.012 -.0688959 -.0085623
220 | -.1660315 .0144591 -11.48 0.000 -.1943739 -.1376891
221 | -.0618369 .0153758 -4.02 0.000 -.0919763 -.0316974
222 | -.0423265 .0151416 -2.80 0.005 -.0720067 -.0126462
223 | -.0267077 .0154501 -1.73 0.084 -.0569928 .0035773
224 | -.1252325 .0145519 -8.61 0.000 -.1537569 -.0967081
225 | -.135745 .0150315 -9.03 0.000 -.1652094 -.1062806
226 | -.1871663 .0143665 -13.03 0.000 -.2153272 -.1590053
227 | -.194912 .0143318 -13.60 0.000 -.2230051 -.166819
228 | -.1188882 .0149073 -7.98 0.000 -.1481091 -.0896673
229 | -.0274262 .0163569 -1.68 0.094 -.0594887 .0046363
230 | -.0789468 .0154012 -5.13 0.000 -.1091359 -.0487577
231 | -.0530848 .016169 -3.28 0.001 -.0847791 -.0213906
232 | -.0945976 .0150634 -6.28 0.000 -.1241246 -.0650706
233 | -.016627 .0162927 -1.02 0.308 -.0485636 .0153096
234 | -.0458866 .0156902 -2.92 0.003 -.0766422 -.0151309
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0354993 .048454 0.73 0.464 -.0594794 .1304781
1 212 | -.0070429 .0478766 -0.15 0.883 -.1008897 .0868039
1 213 | .0571544 .0543066 1.05 0.293 -.0492964 .1636053
1 214 | .0421901 .0553638 0.76 0.446 -.066333 .1507132
1 215 | .025052 .0475891 0.53 0.599 -.0682313 .1183353
1 216 | .0658625 .0495364 1.33 0.184 -.0312378 .1629628
1 217 | -.0491218 .0493001 -1.00 0.319 -.1457589 .0475153
1 218 | .0686093 .0560554 1.22 0.221 -.0412694 .178488
1 219 | -.003251 .0499642 -0.07 0.948 -.1011899 .094688
1 220 | .0520174 .0504486 1.03 0.303 -.0468712 .1509059
1 221 | .0223054 .0551756 0.40 0.686 -.0858488 .1304596
1 222 | .0017959 .0511005 0.04 0.972 -.0983705 .1019622
1 223 | .0065728 .0482634 0.14 0.892 -.0880323 .1011779
1 224 | .051034 .0497432 1.03 0.305 -.0464716 .1485397
1 225 | .0576809 .0492395 1.17 0.241 -.0388375 .1541994
1 226 | .0004128 .0458881 0.01 0.993 -.0895362 .0903618
1 227 | .0147904 .0455041 0.33 0.745 -.0744058 .1039867
1 228 | .0027476 .0461099 0.06 0.952 -.0876362 .0931314
1 229 | -.0047547 .0484216 -0.10 0.922 -.0996699 .0901605
1 230 | -.0206513 .0455 -0.45 0.650 -.1098397 .068537
1 231 | -.0171042 .0477262 -0.36 0.720 -.1106563 .0764479
1 232 | .039355 .0486911 0.81 0.419 -.0560885 .1347984
1 233 | -.0152545 .0500413 -0.30 0.760 -.1133445 .0828355
1 234 | -.017359 .046342 -0.37 0.708 -.1081977 .0734797
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1380254 .1707343 -0.81 0.419 -.4726956 .1966448
1 212 | -.2051706 .1633242 -1.26 0.209 -.5253157 .1149746
1 213 | -.0477796 .1706082 -0.28 0.779 -.3822026 .2866435
1 214 | -.0692554 .1814531 -0.38 0.703 -.4249366 .2864257
1 215 | .0598729 .1916341 0.31 0.755 -.3157648 .4355105
1 216 | -.4060199 .1792949 -2.26 0.024 -.7574706 -.0545692
1 217 | -.3860232 .1610943 -2.40 0.017 -.7017973 -.070249
1 218 | -.308994 .1640898 -1.88 0.060 -.6306399 .0126518
1 219 | -.2093553 .1883104 -1.11 0.266 -.5784779 .1597674
1 220 | -.5100059 .1567345 -3.25 0.001 -.8172341 -.2027776
1 221 | -.2611077 .1862149 -1.40 0.161 -.6261228 .1039073
1 222 | -.2863828 .1729236 -1.66 0.098 -.6253446 .052579
1 223 | -.2337568 .1777992 -1.31 0.189 -.5822756 .114762
1 224 | -.3689429 .1616487 -2.28 0.022 -.6858037 -.052082
1 225 | -.4969596 .1697933 -2.93 0.003 -.8297854 -.1641339
1 226 | -.6384976 .1586618 -4.02 0.000 -.9495035 -.3274916
1 227 | -.6267951 .1640666 -3.82 0.000 -.9483955 -.3051947
1 228 | -.4811177 .1516063 -3.17 0.002 -.7782936 -.1839418
1 229 | -.3459801 .1739692 -1.99 0.047 -.6869915 -.0049687
1 230 | -.3905607 .1691396 -2.31 0.021 -.7221051 -.0590163
1 231 | -.4099459 .1683511 -2.44 0.015 -.7399447 -.079947
1 232 | -.5060528 .1644251 -3.08 0.002 -.8283559 -.1837496
1 233 | -.3894871 .1805644 -2.16 0.031 -.7434262 -.035548
1 234 | -.3597547 .1722604 -2.09 0.037 -.6974166 -.0220929
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0410748 .0314175 1.31 0.191 -.0205093 .1026589
1 212 | .0109516 .030933 0.35 0.723 -.0496828 .071586
1 213 | .020265 .032778 0.62 0.536 -.0439858 .0845158
1 214 | .058597 .0398253 1.47 0.141 -.0194679 .1366618
1 215 | .0503365 .0327882 1.54 0.125 -.0139343 .1146074
1 216 | .0083163 .0307403 0.27 0.787 -.0519403 .0685729
1 217 | .0587871 .0321143 1.83 0.067 -.0041629 .121737
1 218 | .0335373 .0325936 1.03 0.304 -.030352 .0974266
1 219 | .0693131 .0329864 2.10 0.036 .0046538 .1339725
1 220 | .0352071 .0318377 1.11 0.269 -.0272006 .0976149
1 221 | .0207651 .0320439 0.65 0.517 -.0420467 .0835769
1 222 | .0242839 .0317277 0.77 0.444 -.0379081 .0864759
1 223 | .0312794 .0314459 0.99 0.320 -.0303603 .0929191
1 224 | .0455412 .030739 1.48 0.138 -.0147127 .1057952
1 225 | .0024556 .0301706 0.08 0.935 -.0566842 .0615954
1 226 | .0126591 .0294099 0.43 0.667 -.0449897 .0703079
1 227 | .0127739 .0294685 0.43 0.665 -.0449897 .0705375
1 228 | -.0011054 .0300715 -0.04 0.971 -.060051 .0578403
1 229 | .0072458 .0344029 0.21 0.833 -.0601902 .0746818
1 230 | .028921 .0309703 0.93 0.350 -.0317864 .0896284
1 231 | -.0178023 .0311786 -0.57 0.568 -.0789181 .0433134
1 232 | .0066657 .0306066 0.22 0.828 -.0533288 .0666603
1 233 | .0007396 .0327524 0.02 0.982 -.0634611 .0649402
1 234 | .019404 .0322783 0.60 0.548 -.0438675 .0826754
|
_cons | .539501 .0097824 55.15 0.000 .5203257 .5586763
------------------------------+----------------------------------------------------------------
sigma_u | .51634512
sigma_e | .95193743
rho | .22733026 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_personsinjured.rtf
dir : seeout
Outcome of Pedestrians injured¶
[19]:
**************************************
global outcome1 pedestriansinjured
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_xt_$outcome1
xtpoisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word replace ctitle(xtpoisson robust_se $outcome1)
xtreg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome1)
xtpoisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome2)
xtreg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome2)
xtpoisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome3)
xtreg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome3)
capture erase $filename.txt
note: 4063 groups (101575 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -84849.374
Iteration 1: log pseudolikelihood = -83826.308
Iteration 2: log pseudolikelihood = -83808.046
Iteration 3: log pseudolikelihood = -83807.984
Iteration 4: log pseudolikelihood = -83807.984
Conditional fixed-effects Poisson regression Number of obs = 223,100
Group variable: intersection~d Number of groups = 8,924
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1714.68
Log pseudolikelihood = -83807.984 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
pedestriansinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1473443 .0289169 -5.10 0.000 -.2040205 -.0906682
bike_route_tv | -.0788681 .0418501 -1.88 0.059 -.1608928 .0031566
flag_street_improv | -.0391148 .0743738 -0.53 0.599 -.1848847 .1066552
flag_left_turn | -.3024144 .0717959 -4.21 0.000 -.4431317 -.1616971
|
quarterly |
211 | .2647848 .0428776 6.18 0.000 .1807463 .3488232
212 | .1910351 .0428273 4.46 0.000 .1070951 .2749751
213 | .0997147 .0446704 2.23 0.026 .0121623 .1872672
214 | .0572896 .0448712 1.28 0.202 -.0306564 .1452356
215 | .2842028 .0434809 6.54 0.000 .1989817 .3694238
216 | .1188272 .0454711 2.61 0.009 .0297054 .207949
217 | .0429127 .0460794 0.93 0.352 -.0474012 .1332266
218 | -.1513728 .0480658 -3.15 0.002 -.24558 -.0571657
219 | .2156872 .0431129 5.00 0.000 .1311874 .300187
220 | -.078939 .0465744 -1.69 0.090 -.1702232 .0123451
221 | -.144812 .046603 -3.11 0.002 -.2361523 -.0534718
222 | -.1474177 .0487546 -3.02 0.002 -.2429751 -.0518604
223 | .2103492 .0435683 4.83 0.000 .1249568 .2957415
224 | .0210277 .0452678 0.46 0.642 -.0676955 .109751
225 | -.4602332 .0521238 -8.83 0.000 -.5623939 -.3580725
226 | -.553453 .0560363 -9.88 0.000 -.6632822 -.4436238
227 | -.1519404 .05011 -3.03 0.002 -.2501542 -.0537265
228 | .1350492 .0478143 2.82 0.005 .0413349 .2287636
229 | -.1718184 .0490018 -3.51 0.000 -.2678601 -.0757766
230 | -.331098 .0516814 -6.41 0.000 -.4323917 -.2298042
231 | .0831383 .047354 1.76 0.079 -.0096739 .1759505
232 | .1101524 .0461687 2.39 0.017 .0196634 .2006414
233 | -.1810535 .0490228 -3.69 0.000 -.2771364 -.0849706
234 | -.3517824 .0499718 -7.04 0.000 -.4497253 -.2538395
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1669273 .1688398 0.99 0.323 -.1639926 .4978471
1 212 | .1322611 .1726091 0.77 0.444 -.2060466 .4705688
1 213 | .369304 .1725955 2.14 0.032 .0310231 .7075849
1 214 | .1822239 .1799779 1.01 0.311 -.1705262 .534974
1 215 | .2051124 .1704456 1.20 0.229 -.1289549 .5391797
1 216 | .2179004 .1805087 1.21 0.227 -.1358903 .571691
1 217 | .1842643 .1806571 1.02 0.308 -.1698171 .5383457
1 218 | .203207 .1831077 1.11 0.267 -.1556776 .5620916
1 219 | .2463487 .1702173 1.45 0.148 -.0872711 .5799685
1 220 | .3192933 .1928717 1.66 0.098 -.0587283 .6973149
1 221 | .1489652 .1932863 0.77 0.441 -.229869 .5277994
1 222 | .085625 .1986343 0.43 0.666 -.3036911 .4749412
1 223 | .1810588 .178025 1.02 0.309 -.1678637 .5299814
1 224 | .4582463 .1740975 2.63 0.008 .1170215 .7994711
1 225 | .0110895 .2177243 0.05 0.959 -.4156424 .4378213
1 226 | -.326898 .2574066 -1.27 0.204 -.8314056 .1776096
1 227 | .0378538 .2197923 0.17 0.863 -.3929311 .4686387
1 228 | .2842521 .179015 1.59 0.112 -.0666109 .6351152
1 229 | .0547532 .1944713 0.28 0.778 -.3264035 .43591
1 230 | .1393686 .2001669 0.70 0.486 -.2529513 .5316885
1 231 | .217817 .1984722 1.10 0.272 -.1711814 .6068153
1 232 | .2181966 .1842134 1.18 0.236 -.1428551 .5792483
1 233 | .0961793 .206029 0.47 0.641 -.3076301 .4999888
1 234 | .2429989 .2000415 1.21 0.224 -.1490753 .635073
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | .016967 .1231265 0.14 0.890 -.2243566 .2582906
1 212 | .1146573 .1180796 0.97 0.332 -.1167745 .3460891
1 213 | -.0531456 .1245587 -0.43 0.670 -.2972761 .190985
1 214 | .1440898 .1249857 1.15 0.249 -.1008777 .3890572
1 215 | .0102887 .1274443 0.08 0.936 -.2394975 .2600749
1 216 | -.1164595 .1328443 -0.88 0.381 -.3768296 .1439107
1 217 | -.3068367 .1291729 -2.38 0.018 -.5600109 -.0536626
1 218 | -.2951603 .1355516 -2.18 0.029 -.5608366 -.029484
1 219 | -.0996281 .1275212 -0.78 0.435 -.3495651 .1503088
1 220 | -.0232479 .1344454 -0.17 0.863 -.2867562 .2402603
1 221 | -.2134397 .1428682 -1.49 0.135 -.4934564 .0665769
1 222 | -.0976605 .1279411 -0.76 0.445 -.3484204 .1530995
1 223 | -.2251796 .1386896 -1.62 0.104 -.4970062 .046647
1 224 | -.1598714 .1236494 -1.29 0.196 -.4022198 .0824771
1 225 | -.1187946 .1333353 -0.89 0.373 -.3801271 .1425378
1 226 | -.3089514 .1696711 -1.82 0.069 -.6415006 .0235977
1 227 | -.1072204 .1570772 -0.68 0.495 -.4150861 .2006453
1 228 | -.3094858 .146638 -2.11 0.035 -.596891 -.0220805
1 229 | -.2762276 .1482609 -1.86 0.062 -.5668136 .0143584
1 230 | -.088927 .1450836 -0.61 0.540 -.3732857 .1954317
1 231 | -.2343204 .1487011 -1.58 0.115 -.5257691 .0571283
1 232 | -.2885227 .1532641 -1.88 0.060 -.5889148 .0118694
1 233 | -.3493022 .1650018 -2.12 0.034 -.6726997 -.0259048
1 234 | -.0777525 .1541897 -0.50 0.614 -.3799588 .2244538
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | -.0021149 .077618 -0.03 0.978 -.1542433 .1500135
1 212 | -.0443154 .0778883 -0.57 0.569 -.1969737 .108343
1 213 | -.0365334 .0806301 -0.45 0.650 -.1945654 .1214987
1 214 | -.0558735 .0824934 -0.68 0.498 -.2175576 .1058107
1 215 | -.0836066 .0782129 -1.07 0.285 -.2369011 .0696879
1 216 | -.019892 .0819787 -0.24 0.808 -.1805674 .1407833
1 217 | .0521179 .0811851 0.64 0.521 -.1070019 .2112378
1 218 | .0620735 .0883566 0.70 0.482 -.1111024 .2352493
1 219 | .0106125 .0764908 0.14 0.890 -.1393067 .1605318
1 220 | -.0908287 .0876466 -1.04 0.300 -.2626129 .0809555
1 221 | .0078839 .0867178 0.09 0.928 -.1620799 .1778477
1 222 | -.0644745 .0873677 -0.74 0.461 -.235712 .1067631
1 223 | -.0389272 .0788796 -0.49 0.622 -.1935284 .1156739
1 224 | .0036836 .0817678 0.05 0.964 -.1565782 .1639455
1 225 | .0563385 .0937366 0.60 0.548 -.127382 .2400589
1 226 | .0290428 .1002627 0.29 0.772 -.1674684 .2255541
1 227 | -.0360043 .0886654 -0.41 0.685 -.2097852 .1377766
1 228 | -.0460976 .0864932 -0.53 0.594 -.2156211 .1234259
1 229 | .1157109 .1120245 1.03 0.302 -.1038531 .335275
1 230 | .0888488 .0897494 0.99 0.322 -.0870567 .2647544
1 231 | -.0677021 .0854913 -0.79 0.428 -.235262 .0998577
1 232 | .0022362 .0847947 0.03 0.979 -.1639583 .1684308
1 233 | -.0376408 .0897032 -0.42 0.675 -.2134557 .1381742
1 234 | -.0714073 .0958595 -0.74 0.456 -.2592886 .1164739
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 223,100
Group variable: intersecti~d Number of groups = 8,924
R-sq: Obs per group:
within = 0.0102 min = 25
between = 0.1338 avg = 25.0
overall = 0.0015 max = 25
F(100,8923) = 16.66
corr(u_i, Xb) = -0.1653 Prob > F = 0.0000
(Std. Err. adjusted for 8,924 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
pedestriansinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0336664 .0056859 -5.92 0.000 -.0448121 -.0225207
bike_route_tv | -.0129192 .0074893 -1.73 0.085 -.0276 .0017617
flag_street_improv | -.0208498 .0194229 -1.07 0.283 -.0589231 .0172235
flag_left_turn | -.1467189 .0263827 -5.56 0.000 -.1984352 -.0950027
|
quarterly |
211 | .0494957 .0081451 6.08 0.000 .0335295 .0654619
212 | .0344632 .007848 4.39 0.000 .0190792 .0498472
213 | .0168746 .0078252 2.16 0.031 .0015354 .0322138
214 | .0095932 .0076988 1.25 0.213 -.0054983 .0246846
215 | .0537587 .0083646 6.43 0.000 .0373621 .0701553
216 | .0204427 .0080407 2.54 0.011 .0046811 .0362043
217 | .0069465 .0078215 0.89 0.374 -.0083854 .0222784
218 | -.0231676 .007382 -3.14 0.002 -.0376381 -.0086972
219 | .0389946 .0079575 4.90 0.000 .023396 .0545932
220 | -.0124795 .0074384 -1.68 0.093 -.0270604 .0021014
221 | -.0220161 .0071897 -3.06 0.002 -.0361095 -.0079227
222 | -.0222421 .0074628 -2.98 0.003 -.0368709 -.0076133
223 | .0378854 .0079874 4.74 0.000 .0222283 .0535424
224 | .003201 .0075542 0.42 0.672 -.011607 .0180089
225 | -.0590104 .0068594 -8.60 0.000 -.0724564 -.0455643
226 | -.0672544 .0068916 -9.76 0.000 -.0807635 -.0537453
227 | -.0216686 .0075501 -2.87 0.004 -.0364686 -.0068687
228 | .023536 .0083512 2.82 0.005 .0071657 .0399063
229 | -.0241752 .007327 -3.30 0.001 -.0385379 -.0098126
230 | -.0434783 .0071321 -6.10 0.000 -.057459 -.0294977
231 | .0148277 .0079682 1.86 0.063 -.0007919 .0304472
232 | .0195044 .0078686 2.48 0.013 .0040802 .0349286
233 | -.0240468 .0072459 -3.32 0.001 -.0382504 -.0098431
234 | -.0440304 .0068528 -6.43 0.000 -.0574634 -.0305975
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .013032 .0268596 0.49 0.628 -.039619 .0656829
1 212 | .0106083 .026116 0.41 0.685 -.0405851 .0618017
1 213 | .0558911 .0278788 2.00 0.045 .0012422 .11054
1 214 | .0240674 .0258305 0.93 0.351 -.0265662 .0747011
1 215 | .0206681 .0279713 0.74 0.460 -.0341621 .0754983
1 216 | .0274183 .027282 1.00 0.315 -.0260606 .0808972
1 217 | .0232896 .0258653 0.90 0.368 -.0274123 .0739916
1 218 | .0313094 .0239496 1.31 0.191 -.0156374 .0782561
1 219 | .0300396 .027795 1.08 0.280 -.0244451 .0845242
1 220 | .0479824 .027686 1.73 0.083 -.0062885 .1022532
1 221 | .0251065 .0244881 1.03 0.305 -.0228958 .0731087
1 222 | .0183291 .0240398 0.76 0.446 -.0287943 .0654525
1 223 | .0179252 .0274646 0.65 0.514 -.0359117 .0717622
1 224 | .0712012 .0280889 2.53 0.011 .0161405 .126262
1 225 | .0217181 .0218375 0.99 0.320 -.0210885 .0645247
1 226 | .0064014 .0204299 0.31 0.754 -.0336459 .0464486
1 227 | .0152213 .0251105 0.61 0.544 -.0340011 .0644438
1 228 | .0398569 .0272797 1.46 0.144 -.0136177 .0933314
1 229 | .0167303 .0230215 0.73 0.467 -.0283972 .0618578
1 230 | .0316634 .0226778 1.40 0.163 -.0127904 .0761171
1 231 | .030818 .0283622 1.09 0.277 -.0247784 .0864145
1 232 | .0299253 .0267514 1.12 0.263 -.0225136 .0823642
1 233 | .0240366 .0237368 1.01 0.311 -.0224931 .0705663
1 234 | .0435615 .0227892 1.91 0.056 -.0011105 .0882335
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | .1517698 .0847325 1.79 0.073 -.0143255 .317865
1 212 | .1799416 .0814077 2.21 0.027 .0203638 .3395194
1 213 | .0148994 .0756452 0.20 0.844 -.1333825 .1631814
1 214 | .122692 .0819332 1.50 0.134 -.0379159 .2832999
1 215 | .1441972 .0872773 1.65 0.099 -.0268862 .3152807
1 216 | -.0206605 .0786462 -0.26 0.793 -.1748251 .133504
1 217 | -.1453293 .0666744 -2.18 0.029 -.2760264 -.0146321
1 218 | -.1922624 .0648014 -2.97 0.003 -.3192881 -.0652367
1 219 | .0371535 .080587 0.46 0.645 -.1208156 .1951225
1 220 | -.0524217 .0749174 -0.70 0.484 -.199277 .0944336
1 221 | -.1616419 .0703022 -2.30 0.022 -.2994503 -.0238334
1 222 | -.1184133 .0658746 -1.80 0.072 -.2475426 .010716
1 223 | -.0564256 .0809543 -0.70 0.486 -.2151145 .1022634
1 224 | -.0852783 .066633 -1.28 0.201 -.2158944 .0453378
1 225 | -.2075535 .0582404 -3.56 0.000 -.321718 -.093389
1 226 | -.2839607 .0646931 -4.39 0.000 -.410774 -.1571474
1 227 | -.1347066 .0766819 -1.76 0.079 -.2850207 .0156076
1 228 | -.1406539 .076336 -1.84 0.065 -.2902901 .0089823
1 229 | -.1987578 .066766 -2.98 0.003 -.3296346 -.0678811
1 230 | -.1679605 .068291 -2.46 0.014 -.3018266 -.0340943
1 231 | -.1267189 .0766337 -1.65 0.098 -.2769385 .0235007
1 232 | -.1396842 .0777591 -1.80 0.072 -.2921098 .0127414
1 233 | -.235229 .071027 -3.31 0.001 -.3744582 -.0959998
1 234 | -.1809755 .0693132 -2.61 0.009 -.3168453 -.0451057
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0109417 .017868 0.61 0.540 -.0240837 .045967
1 212 | -.0031912 .0170226 -0.19 0.851 -.0365595 .0301771
1 213 | -.0040696 .0168645 -0.24 0.809 -.037128 .0289887
1 214 | -.0100761 .0168165 -0.60 0.549 -.0430403 .0228881
1 215 | -.0102828 .0175674 -0.59 0.558 -.0447189 .0241533
1 216 | .000016 .0173336 0.00 0.999 -.0339619 .0339939
1 217 | .0129718 .0168311 0.77 0.441 -.0200211 .0459648
1 218 | .0059914 .0166339 0.36 0.719 -.0266149 .0385976
1 219 | .0118473 .0171185 0.69 0.489 -.0217089 .0454034
1 220 | -.0194558 .0163532 -1.19 0.234 -.0515119 .0126003
1 221 | -.0037163 .0160667 -0.23 0.817 -.0352106 .0277781
1 222 | -.0161193 .0156834 -1.03 0.304 -.0468623 .0146238
1 223 | -.0010756 .0171125 -0.06 0.950 -.03462 .0324689
1 224 | .0020286 .0165245 0.12 0.902 -.0303631 .0344204
1 225 | -.0063362 .0149659 -0.42 0.672 -.0356728 .0230003
1 226 | -.0126923 .0148134 -0.86 0.392 -.0417299 .0163453
1 227 | -.0113555 .0157343 -0.72 0.470 -.0421983 .0194874
1 228 | -.0049944 .0177859 -0.28 0.779 -.0398588 .0298701
1 229 | .0149579 .0207286 0.72 0.471 -.0256749 .0555907
1 230 | .004857 .0152474 0.32 0.750 -.0250315 .0347455
1 231 | -.0097738 .0167832 -0.58 0.560 -.0426726 .0231251
1 232 | .0052528 .0173121 0.30 0.762 -.0286829 .0391885
1 233 | -.0099556 .0154666 -0.64 0.520 -.0402736 .0203624
1 234 | -.0176051 .0151057 -1.17 0.244 -.0472157 .0120056
|
_cons | .1831487 .0048844 37.50 0.000 .1735742 .1927232
------------------------------+----------------------------------------------------------------
sigma_u | .18002542
sigma_e | .45164447
rho | .13709926 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
note: 10648 groups (266200 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -10346.58
Iteration 1: log pseudolikelihood = -10263.9
Iteration 2: log pseudolikelihood = -10259.463
Iteration 3: log pseudolikelihood = -10259.426
Iteration 4: log pseudolikelihood = -10259.426
Conditional fixed-effects Poisson regression Number of obs = 58,475
Group variable: intersection~d Number of groups = 2,339
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 188.43
Log pseudolikelihood = -10259.426 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_pedestriansinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0894776 .0880194 -1.02 0.309 -.2619924 .0830373
bike_route_tv | -.0592098 .131378 -0.45 0.652 -.3167058 .1982863
flag_street_improv | -.1253536 .2361622 -0.53 0.596 -.588223 .3375159
flag_left_turn | -.1993966 .2044506 -0.98 0.329 -.6001124 .2013192
|
quarterly |
211 | -.0698144 .1462568 -0.48 0.633 -.3564725 .2168437
212 | .0547544 .1453641 0.38 0.706 -.2301541 .3396629
213 | -.041026 .1463883 -0.28 0.779 -.3279418 .2458897
214 | .0880045 .1457155 0.60 0.546 -.1975926 .3736017
215 | -.0690612 .1482353 -0.47 0.641 -.3595971 .2214747
216 | -.1470387 .1546771 -0.95 0.342 -.4502002 .1561228
217 | -.0115664 .1475359 -0.08 0.938 -.3007314 .2775986
218 | -.1681649 .1551307 -1.08 0.278 -.4722154 .1358856
219 | -.1120434 .1491674 -0.75 0.453 -.4044062 .1803193
220 | -.3629157 .1635761 -2.22 0.027 -.683519 -.0423123
221 | -.1751329 .1513758 -1.16 0.247 -.471824 .1215582
222 | -.1092047 .1468156 -0.74 0.457 -.396958 .1785485
223 | -.2284873 .1554239 -1.47 0.142 -.5331127 .076138
224 | -.0847894 .1509234 -0.56 0.574 -.3805938 .211015
225 | -.365404 .1613888 -2.26 0.024 -.6817202 -.0490877
226 | -.6272108 .1767509 -3.55 0.000 -.9736362 -.2807855
227 | -.1760185 .1679923 -1.05 0.295 -.5052775 .1532404
228 | -.1923009 .1630139 -1.18 0.238 -.5118023 .1272005
229 | -.1976897 .158142 -1.25 0.211 -.5076424 .112263
230 | -.0924494 .1545618 -0.60 0.550 -.3953849 .2104861
231 | -.1612412 .1556776 -1.04 0.300 -.4663637 .1438813
232 | -.1061369 .1537507 -0.69 0.490 -.4074828 .195209
233 | -.1490523 .1568577 -0.95 0.342 -.4564877 .1583831
234 | -.160093 .1512009 -1.06 0.290 -.4564413 .1362553
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .3659636 .5975774 0.61 0.540 -.8052666 1.537194
1 212 | .1321586 .5603483 0.24 0.814 -.966104 1.230421
1 213 | -.056609 .6866341 -0.08 0.934 -1.402387 1.289169
1 214 | -.5318726 .7426169 -0.72 0.474 -1.987375 .9236299
1 215 | .2997056 .6163638 0.49 0.627 -.9083453 1.507757
1 216 | .2841838 .7056829 0.40 0.687 -1.098929 1.667297
1 217 | -.3890748 .7440535 -0.52 0.601 -1.847393 1.069243
1 218 | .272058 .7027269 0.39 0.699 -1.105261 1.649377
1 219 | .6283769 .5839129 1.08 0.282 -.5160713 1.772825
1 220 | -.4391637 .8482134 -0.52 0.605 -2.101631 1.223304
1 221 | .3018396 .6469614 0.47 0.641 -.9661815 1.569861
1 222 | .7172369 .6563983 1.09 0.275 -.5692802 2.003754
1 223 | .1489362 .6841913 0.22 0.828 -1.192054 1.489926
1 224 | -.7760803 .8466369 -0.92 0.359 -2.435458 .8832975
1 225 | -1.136906 1.103684 -1.03 0.303 -3.300086 1.026275
1 226 | -.291515 .8505359 -0.34 0.732 -1.958535 1.375505
1 227 | .1087853 .6846585 0.16 0.874 -1.233121 1.450691
1 228 | .7182273 .660131 1.09 0.277 -.5756057 2.01206
1 229 | -.5286195 .8466663 -0.62 0.532 -2.188055 1.130816
1 230 | -1.398124 1.103563 -1.27 0.205 -3.561068 .7648187
1 231 | .8929906 .6875137 1.30 0.194 -.4545116 2.240493
1 232 | .1802119 .645286 0.28 0.780 -1.084525 1.444949
1 233 | .0873124 .6833696 0.13 0.898 -1.252067 1.426692
1 234 | .6841024 .5858771 1.17 0.243 -.4641955 1.8324
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2886632 .3405781 -0.85 0.397 -.956184 .3788575
1 212 | .0297642 .3104909 0.10 0.924 -.5787868 .6383152
1 213 | -.6646574 .3900196 -1.70 0.088 -1.429082 .099767
1 214 | -.3932339 .3375368 -1.17 0.244 -1.054794 .2683261
1 215 | -.258211 .3731964 -0.69 0.489 -.9896624 .4732404
1 216 | -.7592588 .3962921 -1.92 0.055 -1.535977 .0174593
1 217 | -.70372 .3747921 -1.88 0.060 -1.438299 .0308589
1 218 | -.4644074 .3818669 -1.22 0.224 -1.212853 .284038
1 219 | -.2231049 .3282572 -0.68 0.497 -.8664771 .4202674
1 220 | -.0637473 .3461877 -0.18 0.854 -.7422628 .6147682
1 221 | -1.351053 .4845514 -2.79 0.005 -2.300756 -.4013492
1 222 | -.4223911 .3366618 -1.25 0.210 -1.082236 .2374539
1 223 | -.9249403 .4089226 -2.26 0.024 -1.726414 -.1234668
1 224 | -.4963711 .3344952 -1.48 0.138 -1.15197 .1592275
1 225 | -.4176702 .3763163 -1.11 0.267 -1.155237 .3198962
1 226 | -1.221978 .5316666 -2.30 0.022 -2.264025 -.1799304
1 227 | -.6726439 .4446874 -1.51 0.130 -1.544215 .1989274
1 228 | -.1716252 .4053547 -0.42 0.672 -.9661058 .6228555
1 229 | -.8785286 .4336266 -2.03 0.043 -1.728421 -.0286361
1 230 | -1.049168 .4489365 -2.34 0.019 -1.929067 -.1692683
1 231 | -.9906146 .405159 -2.45 0.014 -1.784712 -.1965174
1 232 | -.8327851 .4030063 -2.07 0.039 -1.622663 -.0429072
1 233 | -1.311335 .5191389 -2.53 0.012 -2.328828 -.2938412
1 234 | -.6897062 .4380428 -1.57 0.115 -1.548254 .168842
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .1879651 .2479561 0.76 0.448 -.29802 .6739502
1 212 | -.0236917 .251395 -0.09 0.925 -.5164169 .4690335
1 213 | -.2568529 .2626361 -0.98 0.328 -.7716102 .2579044
1 214 | -.1034132 .2516136 -0.41 0.681 -.5965668 .3897404
1 215 | -.0737784 .2571303 -0.29 0.774 -.5777445 .4301877
1 216 | -.2752576 .283482 -0.97 0.332 -.8308721 .2803568
1 217 | -.1884743 .2646021 -0.71 0.476 -.707085 .3301363
1 218 | -.2143128 .2734908 -0.78 0.433 -.7503449 .3217194
1 219 | -.0719151 .26155 -0.27 0.783 -.5845437 .4407135
1 220 | -.3621721 .2913784 -1.24 0.214 -.9332633 .2089191
1 221 | -.1455696 .2744202 -0.53 0.596 -.6834233 .3922841
1 222 | -.3238553 .2657294 -1.22 0.223 -.8446753 .1969647
1 223 | -.2310286 .2876821 -0.80 0.422 -.7948752 .3328181
1 224 | .0096139 .2549785 0.04 0.970 -.4901347 .5093625
1 225 | -.1751524 .2910899 -0.60 0.547 -.7456781 .3953733
1 226 | .2725969 .2854483 0.95 0.340 -.2868715 .8320654
1 227 | -.2502825 .2875683 -0.87 0.384 -.8139061 .313341
1 228 | .0054276 .2788077 0.02 0.984 -.5410255 .5518807
1 229 | -.2908957 .2816353 -1.03 0.302 -.8428907 .2610993
1 230 | -.0025522 .2740672 -0.01 0.993 -.5397141 .5346097
1 231 | -.0829963 .2690768 -0.31 0.758 -.6103771 .4443846
1 232 | .1176722 .2577004 0.46 0.648 -.3874113 .6227557
1 233 | -.0869384 .2643713 -0.33 0.742 -.6050967 .4312199
1 234 | -.2297243 .281158 -0.82 0.414 -.780784 .3213353
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 58,475
Group variable: intersecti~d Number of groups = 2,339
R-sq: Obs per group:
within = 0.0033 min = 25
between = 0.0497 avg = 25.0
overall = 0.0000 max = 25
F(100,2338) = 1.81
corr(u_i, Xb) = -0.4815 Prob > F = 0.0000
(Std. Err. adjusted for 2,339 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_pedestriansinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.004928 .0052894 -0.93 0.352 -.0153004 .0054443
bike_route_tv | -.0025084 .0077276 -0.32 0.746 -.017662 .0126452
flag_street_improv | -.0087666 .0159365 -0.55 0.582 -.0400177 .0224845
flag_left_turn | -.0197737 .0148307 -1.33 0.183 -.0488564 .009309
|
quarterly |
211 | -.00476 .0097957 -0.49 0.627 -.0239691 .0144491
212 | .0038178 .0103202 0.37 0.711 -.0164198 .0240555
213 | -.0025883 .0098288 -0.26 0.792 -.0218623 .0166858
214 | .0062948 .0104151 0.60 0.546 -.014129 .0267187
215 | -.0044133 .0098675 -0.45 0.655 -.0237633 .0149368
216 | -.0090811 .0098386 -0.92 0.356 -.0283743 .0102121
217 | -.0007382 .0100044 -0.07 0.941 -.0203567 .0188803
218 | -.0102723 .0097857 -1.05 0.294 -.0294618 .0089171
219 | -.0070663 .0097682 -0.72 0.470 -.0262215 .0120889
220 | -.0202173 .009395 -2.15 0.032 -.0386407 -.001794
221 | -.0107971 .0095203 -1.13 0.257 -.0294663 .007872
222 | -.0067168 .0095797 -0.70 0.483 -.0255024 .0120688
223 | -.0137152 .0095016 -1.44 0.149 -.0323478 .0049173
224 | -.005558 .0098577 -0.56 0.573 -.0248887 .0137728
225 | -.0204882 .0091411 -2.24 0.025 -.0384137 -.0025627
226 | -.0309724 .0088753 -3.49 0.000 -.0483768 -.0135681
227 | -.0107491 .010328 -1.04 0.298 -.0310021 .0095039
228 | -.0117577 .0100778 -1.17 0.243 -.03152 .0080045
229 | -.0120791 .009668 -1.25 0.212 -.0310378 .0068797
230 | -.0060127 .0099251 -0.61 0.545 -.0254756 .0134503
231 | -.0097754 .0097476 -1.00 0.316 -.0288903 .0093395
232 | -.0067355 .0098546 -0.68 0.494 -.0260601 .0125892
233 | -.0092157 .0097776 -0.94 0.346 -.0283893 .0099579
234 | -.0096667 .0094719 -1.02 0.308 -.0282409 .0089074
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0255783 .0403764 0.63 0.526 -.053599 .1047555
1 212 | .0073693 .0353369 0.21 0.835 -.0619257 .0766642
1 213 | .0025341 .0355549 0.07 0.943 -.0671884 .0722566
1 214 | -.0228046 .033553 -0.68 0.497 -.0886012 .0429921
1 215 | .020872 .038685 0.54 0.590 -.0549886 .0967325
1 216 | .0211008 .0403281 0.52 0.601 -.0579818 .1001834
1 217 | -.0117092 .0337126 -0.35 0.728 -.0778188 .0544005
1 218 | .0198374 .0403532 0.49 0.623 -.0592944 .0989692
1 219 | .0462323 .041892 1.10 0.270 -.0359171 .1283817
1 220 | -.0041911 .0311848 -0.13 0.893 -.065344 .0569617
1 221 | .0226486 .0370689 0.61 0.541 -.0500427 .0953399
1 222 | .0526778 .0501359 1.05 0.294 -.0456376 .1509933
1 223 | .0146002 .035201 0.41 0.678 -.0544282 .0836286
1 224 | -.0227558 .0312467 -0.73 0.467 -.0840299 .0385183
1 225 | -.0154719 .0287447 -0.54 0.590 -.0718397 .0408959
1 226 | .0030155 .031156 0.10 0.923 -.0580808 .0641117
1 227 | .0120614 .0352457 0.34 0.732 -.0570546 .0811774
1 228 | .0513829 .050283 1.02 0.307 -.0472209 .1499868
1 229 | -.0074795 .0310643 -0.24 0.810 -.068396 .0534371
1 230 | -.0286806 .0290065 -0.99 0.323 -.0855617 .0282005
1 231 | .0677953 .0584538 1.16 0.246 -.0468315 .182422
1 232 | .014481 .0370926 0.39 0.696 -.0582569 .0872189
1 233 | .0115448 .0351957 0.33 0.743 -.0574732 .0805627
1 234 | .0468815 .040454 1.16 0.247 -.0324479 .1262108
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0491184 .0544282 -0.90 0.367 -.155851 .0576141
1 212 | .0126089 .0582026 0.22 0.829 -.1015252 .1267431
1 213 | -.0982656 .0492279 -2.00 0.046 -.1948004 -.0017308
1 214 | -.0599529 .0513878 -1.17 0.243 -.1607233 .0408176
1 215 | -.0514944 .0573532 -0.90 0.369 -.1639629 .0609742
1 216 | -.1086619 .0446821 -2.43 0.015 -.1962826 -.0210411
1 217 | -.1005133 .046605 -2.16 0.031 -.1919049 -.0091218
1 218 | -.0838297 .0514109 -1.63 0.103 -.1846454 .0169859
1 219 | -.0497141 .0512006 -0.97 0.332 -.1501174 .0506891
1 220 | -.0552537 .0475958 -1.16 0.246 -.148588 .0380806
1 221 | -.1412424 .0438609 -3.22 0.001 -.2272527 -.0552321
1 222 | -.0782958 .0467453 -1.67 0.094 -.1699623 .0133708
1 223 | -.1201726 .0427929 -2.81 0.005 -.2040887 -.0362566
1 224 | -.0812622 .0439171 -1.85 0.064 -.1673827 .0048583
1 225 | -.0879778 .0441394 -1.99 0.046 -.1745342 -.0014213
1 226 | -.1321247 .0427865 -3.09 0.002 -.2160281 -.0482214
1 227 | -.1036217 .050297 -2.06 0.039 -.2022531 -.0049904
1 228 | -.0512868 .057887 -0.89 0.376 -.164802 .0622284
1 229 | -.1172094 .0412644 -2.84 0.005 -.1981281 -.0362907
1 230 | -.1258139 .0472405 -2.66 0.008 -.2184515 -.0331763
1 231 | -.1238386 .0427188 -2.90 0.004 -.2076093 -.0400678
1 232 | -.1121862 .0475952 -2.36 0.019 -.2055193 -.0188531
1 233 | -.1381918 .0467244 -2.96 0.003 -.2298175 -.0465662
1 234 | -.1044255 .0473598 -2.20 0.028 -.1972972 -.0115539
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0142615 .0199705 0.71 0.475 -.0249002 .0534232
1 212 | -.0016382 .0202098 -0.08 0.935 -.0412692 .0379927
1 213 | -.0172896 .017968 -0.96 0.336 -.0525244 .0179452
1 214 | -.0081009 .0192344 -0.42 0.674 -.0458192 .0296174
1 215 | -.0061531 .0188591 -0.33 0.744 -.0431354 .0308292
1 216 | -.0173094 .0180955 -0.96 0.339 -.0527943 .0181755
1 217 | -.0134349 .0184554 -0.73 0.467 -.0496255 .0227557
1 218 | -.0141421 .0181213 -0.78 0.435 -.0496776 .0213934
1 219 | -.0061429 .0188876 -0.33 0.745 -.043181 .0308952
1 220 | -.018829 .0167665 -1.12 0.262 -.0517077 .0140498
1 221 | -.0103287 .0179969 -0.57 0.566 -.0456202 .0249627
1 222 | -.020642 .0176161 -1.17 0.241 -.0551868 .0139029
1 223 | -.0142274 .0175999 -0.81 0.419 -.0487404 .0202857
1 224 | -.0006189 .0184913 -0.03 0.973 -.0368799 .0356421
1 225 | -.0107409 .0171769 -0.63 0.532 -.0444244 .0229426
1 226 | .0079236 .0170559 0.46 0.642 -.0255227 .04137
1 227 | -.0153919 .0181541 -0.85 0.397 -.0509918 .0202079
1 228 | -.0013845 .0194696 -0.07 0.943 -.0395641 .036795
1 229 | -.0164735 .0171377 -0.96 0.337 -.0500802 .0171332
1 230 | -.0018431 .0190085 -0.10 0.923 -.0391184 .0354322
1 231 | -.0069762 .018174 -0.38 0.701 -.042615 .0286627
1 232 | .0061502 .0189302 0.32 0.745 -.0309715 .043272
1 233 | -.0069027 .0175274 -0.39 0.694 -.0412736 .0274681
1 234 | -.0144942 .0179664 -0.81 0.420 -.0497259 .0207376
|
_cons | .0758801 .0061895 12.26 0.000 .0637426 .0880176
------------------------------+----------------------------------------------------------------
sigma_u | .04894618
sigma_e | .25993956
rho | .03424215 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
note: 4240 groups (106000 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -79202.311
Iteration 1: log pseudolikelihood = -78180.852
Iteration 2: log pseudolikelihood = -78162.099
Iteration 3: log pseudolikelihood = -78162.038
Iteration 4: log pseudolikelihood = -78162.038
Conditional fixed-effects Poisson regression Number of obs = 218,675
Group variable: intersection~d Number of groups = 8,747
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1726.11
Log pseudolikelihood = -78162.038 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_pedestriansinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1533936 .0303347 -5.06 0.000 -.2128486 -.0939386
bike_route_tv | -.0798977 .0445004 -1.80 0.073 -.167117 .0073216
flag_street_improv | -.031238 .0848864 -0.37 0.713 -.1976123 .1351363
flag_left_turn | -.3107503 .0804132 -3.86 0.000 -.4683574 -.1531433
|
quarterly |
211 | .2964317 .0446915 6.63 0.000 .208838 .3840254
212 | .2052939 .044868 4.58 0.000 .1173543 .2932336
213 | .1142387 .0467893 2.44 0.015 .0225333 .2059441
214 | .0534213 .0471539 1.13 0.257 -.0389986 .1458412
215 | .3171168 .0453363 6.99 0.000 .2282592 .4059744
216 | .144597 .047374 3.05 0.002 .0517457 .2374482
217 | .0485858 .04893 0.99 0.321 -.0473152 .1444869
218 | -.1499798 .050579 -2.97 0.003 -.2491129 -.0508468
219 | .2465935 .0449363 5.49 0.000 .1585199 .3346671
220 | -.0517948 .048431 -1.07 0.285 -.1467179 .0431282
221 | -.1418203 .0493122 -2.88 0.004 -.2384705 -.0451701
222 | -.1524774 .0516778 -2.95 0.003 -.2537641 -.0511907
223 | .2495631 .0453632 5.50 0.000 .1606529 .3384733
224 | .0319271 .0476988 0.67 0.503 -.0615608 .1254151
225 | -.4720891 .0547955 -8.62 0.000 -.5794864 -.3646918
226 | -.5460504 .0590235 -9.25 0.000 -.6617344 -.4303665
227 | -.1497025 .0524217 -2.86 0.004 -.2524471 -.0469579
228 | .166474 .0499347 3.33 0.001 .0686037 .2643443
229 | -.1692699 .0517546 -3.27 0.001 -.2707071 -.0678327
230 | -.3631488 .0547623 -6.63 0.000 -.470481 -.2558167
231 | .1072951 .0496221 2.16 0.031 .0100376 .2045526
232 | .1318068 .0483233 2.73 0.006 .0370948 .2265188
233 | -.1854875 .0517976 -3.58 0.000 -.2870089 -.0839661
234 | -.3772342 .0533524 -7.07 0.000 -.481803 -.2726654
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1426817 .1759854 0.81 0.418 -.2022435 .4876068
1 212 | .127688 .1830883 0.70 0.486 -.2311584 .4865344
1 213 | .3838009 .17725 2.17 0.030 .0363972 .7312045
1 214 | .2225443 .1867667 1.19 0.233 -.1435118 .5886004
1 215 | .1878254 .1749909 1.07 0.283 -.1551505 .5308013
1 216 | .2019745 .1898962 1.06 0.288 -.1702151 .5741641
1 217 | .2105818 .1881814 1.12 0.263 -.1582469 .5794105
1 218 | .1932817 .1910969 1.01 0.312 -.1812614 .5678247
1 219 | .2072481 .1774804 1.17 0.243 -.1406071 .5551032
1 220 | .3406966 .1965526 1.73 0.083 -.0445394 .7259326
1 221 | .1293228 .2025304 0.64 0.523 -.2676295 .5262752
1 222 | .0060808 .2061345 0.03 0.976 -.3979354 .410097
1 223 | .168008 .1870448 0.90 0.369 -.1985931 .5346091
1 224 | .5064571 .1816733 2.79 0.005 .1503841 .8625302
1 225 | .0701949 .2235118 0.31 0.753 -.3678802 .50827
1 226 | -.3344184 .2691087 -1.24 0.214 -.8618616 .1930249
1 227 | .0267513 .231622 0.12 0.908 -.4272196 .4807221
1 228 | .2394532 .1881111 1.27 0.203 -.1292378 .6081442
1 229 | .080321 .204579 0.39 0.695 -.3206464 .4812884
1 230 | .2230464 .2070925 1.08 0.281 -.1828475 .6289403
1 231 | .141622 .207302 0.68 0.495 -.2646824 .5479264
1 232 | .2124862 .1934752 1.10 0.272 -.1667182 .5916906
1 233 | .0933103 .2156844 0.43 0.665 -.3294233 .516044
1 234 | .1876874 .217193 0.86 0.388 -.2380031 .6133778
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | .0826562 .1318044 0.63 0.531 -.1756757 .3409881
1 212 | .1430464 .1271859 1.12 0.261 -.1062334 .3923261
1 213 | .0427988 .1346394 0.32 0.751 -.2210896 .3066872
1 214 | .2320203 .13596 1.71 0.088 -.0344563 .4984969
1 215 | .0746903 .1346703 0.55 0.579 -.1892585 .3386392
1 216 | -.0180955 .1444919 -0.13 0.900 -.3012944 .2651034
1 217 | -.2331359 .1382692 -1.69 0.092 -.5041386 .0378667
1 218 | -.2542489 .1435681 -1.77 0.077 -.5356373 .0271394
1 219 | -.0522693 .1335515 -0.39 0.696 -.3140255 .2094868
1 220 | .014491 .143657 0.10 0.920 -.2670714 .2960535
1 221 | -.0756546 .1523488 -0.50 0.619 -.3742527 .2229436
1 222 | -.0357969 .143659 -0.25 0.803 -.3173633 .2457695
1 223 | -.124489 .1429704 -0.87 0.384 -.4047059 .1557278
1 224 | -.0952525 .1379763 -0.69 0.490 -.3656811 .175176
1 225 | -.0638041 .1492812 -0.43 0.669 -.3563899 .2287817
1 226 | -.1836954 .1784281 -1.03 0.303 -.533408 .1660172
1 227 | -.0152945 .1687739 -0.09 0.928 -.3460852 .3154963
1 228 | -.307602 .1523278 -2.02 0.043 -.6061589 -.009045
1 229 | -.1803463 .1546282 -1.17 0.243 -.4834119 .1227193
1 230 | .047756 .1524794 0.31 0.754 -.2510981 .34661
1 231 | -.1267145 .1553475 -0.82 0.415 -.43119 .177761
1 232 | -.2000648 .158941 -1.26 0.208 -.5115835 .1114539
1 233 | -.2195614 .1694824 -1.30 0.195 -.5517407 .1126179
1 234 | .020812 .1676419 0.12 0.901 -.3077601 .349384
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | -.0168475 .0817744 -0.21 0.837 -.1771224 .1434274
1 212 | -.0450904 .0825915 -0.55 0.585 -.2069667 .1167859
1 213 | -.0135653 .0849486 -0.16 0.873 -.1800615 .1529309
1 214 | -.0485247 .0872486 -0.56 0.578 -.2195287 .1224794
1 215 | -.0806843 .0825622 -0.98 0.328 -.2425033 .0811346
1 216 | .0039375 .0863392 0.05 0.964 -.1652843 .1731592
1 217 | .0781543 .0855568 0.91 0.361 -.0895339 .2458426
1 218 | .0924116 .0946005 0.98 0.329 -.0930018 .2778251
1 219 | .020862 .0802533 0.26 0.795 -.1364317 .1781556
1 220 | -.0661746 .091717 -0.72 0.471 -.2459365 .1135874
1 221 | .026438 .0920743 0.29 0.774 -.1540243 .2069004
1 222 | -.0340924 .0925629 -0.37 0.713 -.2155124 .1473276
1 223 | -.0213221 .0829136 -0.26 0.797 -.1838297 .1411856
1 224 | .0058054 .0872203 0.07 0.947 -.1651433 .1767541
1 225 | .0846246 .0996353 0.85 0.396 -.110657 .2799061
1 226 | .0009059 .1065448 0.01 0.993 -.207918 .2097299
1 227 | -.0115492 .0926089 -0.12 0.901 -.1930594 .1699609
1 228 | -.0484414 .0909763 -0.53 0.594 -.2267516 .1298688
1 229 | .1561443 .118878 1.31 0.189 -.0768523 .3891409
1 230 | .1025369 .0950321 1.08 0.281 -.0837227 .2887964
1 231 | -.0631451 .0901045 -0.70 0.483 -.2397467 .1134564
1 232 | -.0065067 .0889025 -0.07 0.942 -.1807524 .1677391
1 233 | -.029999 .0957251 -0.31 0.754 -.2176168 .1576188
1 234 | -.0498123 .1009971 -0.49 0.622 -.247763 .1481383
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 218,675
Group variable: intersecti~d Number of groups = 8,747
R-sq: Obs per group:
within = 0.0099 min = 25
between = 0.0903 avg = 25.0
overall = 0.0039 max = 25
F(100,8746) = 17.16
corr(u_i, Xb) = -0.0980 Prob > F = 0.0000
(Std. Err. adjusted for 8,747 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_pedestriansinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0328592 .0054687 -6.01 0.000 -.0435791 -.0221392
bike_route_tv | -.0123083 .0074061 -1.66 0.097 -.026826 .0022095
flag_street_improv | -.0168262 .0200088 -0.84 0.400 -.0560482 .0223958
flag_left_turn | -.1362708 .0258714 -5.27 0.000 -.1869848 -.0855568
|
quarterly |
211 | .0518442 .0079212 6.55 0.000 .0363169 .0673715
212 | .0342844 .0075937 4.51 0.000 .0193989 .0491699
213 | .0178452 .007581 2.35 0.019 .0029847 .0327056
214 | .008145 .007409 1.10 0.272 -.0063784 .0226684
215 | .0560804 .008131 6.90 0.000 .0401416 .0720191
216 | .023165 .007797 2.97 0.003 .0078811 .0384489
217 | .0072131 .0076494 0.94 0.346 -.0077815 .0222077
218 | -.0211272 .0071302 -2.96 0.003 -.0351041 -.0071503
219 | .04168 .0077302 5.39 0.000 .0265269 .0568331
220 | -.0077143 .00719 -1.07 0.283 -.0218085 .0063798
221 | -.0198318 .0069875 -2.84 0.005 -.0335289 -.0061346
222 | -.0210289 .0072283 -2.91 0.004 -.035198 -.0068599
223 | .0421474 .0077855 5.41 0.000 .026886 .0574088
224 | .0045881 .0073431 0.62 0.532 -.0098061 .0189823
225 | -.0552458 .0065896 -8.38 0.000 -.068163 -.0423287
226 | -.0610233 .0066496 -9.18 0.000 -.0740581 -.0479886
227 | -.0195426 .0072517 -2.69 0.007 -.0337575 -.0053276
228 | .0270251 .0081254 3.33 0.001 .0110975 .0429527
229 | -.0217972 .0070999 -3.07 0.002 -.0357146 -.0078798
230 | -.0431045 .0068152 -6.32 0.000 -.0564639 -.0297451
231 | .0175812 .0077463 2.27 0.023 .0023967 .0327656
232 | .0215337 .0076296 2.82 0.005 .006578 .0364895
233 | -.0223999 .0069945 -3.20 0.001 -.0361108 -.0086889
234 | -.0426788 .0066157 -6.45 0.000 -.0556471 -.0297105
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0075646 .0259917 0.29 0.771 -.0433853 .0585144
1 212 | .0091131 .0256622 0.36 0.723 -.041191 .0594171
1 213 | .0550907 .0267747 2.06 0.040 .0026061 .1075753
1 214 | .0287062 .0252379 1.14 0.255 -.0207661 .0781785
1 215 | .015752 .0267443 0.59 0.556 -.0366731 .0681772
1 216 | .0224553 .0267369 0.84 0.401 -.0299553 .074866
1 217 | .0252646 .025423 0.99 0.320 -.0245704 .0750996
1 218 | .0271855 .023126 1.18 0.240 -.018147 .0725179
1 219 | .0204903 .0267377 0.77 0.443 -.0319218 .0729025
1 220 | .0471436 .0268605 1.76 0.079 -.0055093 .0997964
1 221 | .020435 .0236557 0.86 0.388 -.0259357 .0668057
1 222 | .0082953 .0223422 0.37 0.710 -.0355007 .0520914
1 223 | .0134179 .027144 0.49 0.621 -.0397907 .0666266
1 224 | .0752717 .0279365 2.69 0.007 .0205095 .1300339
1 225 | .0235841 .0213127 1.11 0.269 -.0181937 .0653619
1 226 | .0042946 .0196938 0.22 0.827 -.0343099 .042899
1 227 | .0121912 .0244605 0.50 0.618 -.0357571 .0601395
1 228 | .0292804 .0261716 1.12 0.263 -.0220221 .080583
1 229 | .0172296 .0228848 0.75 0.452 -.0276299 .0620892
1 230 | .037212 .0223415 1.67 0.096 -.0065825 .0810065
1 231 | .0175018 .0266407 0.66 0.511 -.0347202 .0697238
1 232 | .0267021 .0261927 1.02 0.308 -.0246418 .0780461
1 233 | .0215693 .0229806 0.94 0.348 -.023478 .0666167
1 234 | .0349116 .022079 1.58 0.114 -.0083684 .0781915
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | .1786272 .0796168 2.24 0.025 .0225596 .3346947
1 212 | .1708477 .0751444 2.27 0.023 .0235469 .3181484
1 213 | .0729647 .0720382 1.01 0.311 -.0682471 .2141766
1 214 | .1559385 .077423 2.01 0.044 .0041712 .3077057
1 215 | .1741333 .0802784 2.17 0.030 .0167687 .3314979
1 216 | .0450134 .0761125 0.59 0.554 -.1041849 .1942117
1 217 | -.0864464 .0608403 -1.42 0.155 -.2057076 .0328149
1 218 | -.1397467 .0566705 -2.47 0.014 -.2508343 -.0286591
1 219 | .0667377 .0729171 0.92 0.360 -.076197 .2096724
1 220 | -.0124583 .0680555 -0.18 0.855 -.1458631 .1209465
1 221 | -.0764129 .0652288 -1.17 0.241 -.2042767 .0514509
1 222 | -.0699645 .0617624 -1.13 0.257 -.1910333 .0511044
1 223 | .0169819 .0737375 0.23 0.818 -.127561 .1615248
1 224 | -.0362041 .0636647 -0.57 0.570 -.1610019 .0885937
1 225 | -.1479446 .0541234 -2.73 0.006 -.2540392 -.04185
1 226 | -.1974507 .0565483 -3.49 0.000 -.3082988 -.0866026
1 227 | -.0693856 .0704737 -0.98 0.325 -.2075307 .0687595
1 228 | -.107773 .0655065 -1.65 0.100 -.2361811 .0206351
1 229 | -.1248084 .0591704 -2.11 0.035 -.2407964 -.0088205
1 230 | -.0912232 .0602702 -1.51 0.130 -.209367 .0269206
1 231 | -.0520596 .0694218 -0.75 0.453 -.1881427 .0840235
1 232 | -.0730074 .0696163 -1.05 0.294 -.2094717 .0634569
1 233 | -.1507296 .0616774 -2.44 0.015 -.2716319 -.0298273
1 234 | -.1151435 .0625374 -1.84 0.066 -.2377315 .0074446
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0068094 .0172185 0.40 0.693 -.026943 .0405618
1 212 | -.003093 .0164499 -0.19 0.851 -.0353386 .0291526
1 213 | .001409 .0163747 0.09 0.931 -.0306893 .0335073
1 214 | -.0078968 .0161434 -0.49 0.625 -.0395418 .0237481
1 215 | -.0085341 .0171135 -0.50 0.618 -.0420807 .0250124
1 216 | .0057958 .0169397 0.34 0.732 -.0274099 .0390015
1 217 | .0175683 .0162865 1.08 0.281 -.0143571 .0494937
1 218 | .0111159 .0163421 0.68 0.496 -.0209184 .0431502
1 219 | .0140665 .0165532 0.85 0.395 -.0183816 .0465146
1 220 | -.0128359 .0158651 -0.81 0.418 -.0439352 .0182634
1 221 | .0001169 .0155956 0.01 0.994 -.0304542 .030688
1 222 | -.0097655 .015139 -0.65 0.519 -.0394415 .0199104
1 223 | .003954 .0167577 0.24 0.813 -.028895 .036803
1 224 | .0028218 .0160857 0.18 0.861 -.02871 .0343536
1 225 | -.0016942 .014475 -0.12 0.907 -.0300685 .0266801
1 226 | -.0133234 .0141393 -0.94 0.346 -.0410398 .0143929
1 227 | -.0060784 .01503 -0.40 0.686 -.0355408 .023384
1 228 | -.0042446 .017148 -0.25 0.805 -.0378587 .0293695
1 229 | .0212461 .0204887 1.04 0.300 -.0189165 .0614087
1 230 | .0063241 .0144855 0.44 0.662 -.0220709 .0347191
1 231 | -.0074598 .0162076 -0.46 0.645 -.0392305 .0243108
1 232 | .0038751 .0165327 0.23 0.815 -.028533 .0362832
1 233 | -.0072445 .014928 -0.49 0.627 -.0365069 .0220179
1 234 | -.0127751 .014298 -0.89 0.372 -.0408026 .0152524
|
_cons | .1665407 .0046991 35.44 0.000 .1573294 .175752
------------------------------+----------------------------------------------------------------
sigma_u | .16129015
sigma_e | .43571354
rho | .12051523 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_pedestriansinjured.rtf
dir : seeout
[1]:
display (exp(-.1473443)-1)*100
-13.70032
Outcome of Cyclist injured¶
[20]:
**************************************
global outcome1 cyclistinjured
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_xt_$outcome1
xtpoisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word replace ctitle(xtpoisson robust_se $outcome1)
xtreg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome1)
xtpoisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome2)
xtreg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome2)
xtpoisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(xtpoisson robust_se $outcome3)
xtreg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome3)
capture erase $filename.txt
note: 6656 groups (166400 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -39385.849
Iteration 1: log pseudolikelihood = -38409.215
Iteration 2: log pseudolikelihood = -38370.582
Iteration 3: log pseudolikelihood = -38370.286
Iteration 4: log pseudolikelihood = -38370.286
Conditional fixed-effects Poisson regression Number of obs = 158,275
Group variable: intersection~d Number of groups = 6,331
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1753.32
Log pseudolikelihood = -38370.286 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
cyclistinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0271585 .041762 -0.65 0.515 -.1090104 .0546935
bike_route_tv | .1723757 .0642895 2.68 0.007 .0463705 .2983808
flag_street_improv | .0935141 .1164014 0.80 0.422 -.1346285 .3216567
flag_left_turn | -.2060158 .1220732 -1.69 0.091 -.4452748 .0332433
|
quarterly |
211 | -.5231386 .0695948 -7.52 0.000 -.6595418 -.3867354
212 | -.8741466 .0793494 -11.02 0.000 -1.029669 -.7186247
213 | -.0470837 .0608195 -0.77 0.439 -.1662877 .0721204
214 | .0724592 .0591756 1.22 0.221 -.0435229 .1884413
215 | -.3448126 .0659962 -5.22 0.000 -.4741628 -.2154624
216 | -1.16234 .0868789 -13.38 0.000 -1.332619 -.9920601
217 | -.0485489 .0608836 -0.80 0.425 -.1678785 .0707807
218 | .1988575 .0578225 3.44 0.001 .0855275 .3121874
219 | -.3744271 .0654745 -5.72 0.000 -.5027547 -.2460994
220 | -1.20766 .0882351 -13.69 0.000 -1.380598 -1.034723
221 | -.1007806 .0603698 -1.67 0.095 -.2191033 .0175421
222 | .1550835 .057883 2.68 0.007 .0416349 .268532
223 | -.2077478 .0629654 -3.30 0.001 -.3311577 -.0843379
224 | -.7532183 .0745499 -10.10 0.000 -.8993335 -.6071032
225 | -.3749299 .0662407 -5.66 0.000 -.5047594 -.2451005
226 | -.291119 .0672602 -4.33 0.000 -.4229466 -.1592915
227 | -.7159255 .0774004 -9.25 0.000 -.8676275 -.5642235
228 | -.8171887 .0821114 -9.95 0.000 -.9781241 -.6562533
229 | -.1692389 .0624941 -2.71 0.007 -.291725 -.0467527
230 | -.0951642 .0627764 -1.52 0.130 -.2182038 .0278753
231 | -.4930987 .0704378 -7.00 0.000 -.6311543 -.3550432
232 | -.8991521 .0783526 -11.48 0.000 -1.05272 -.7455837
233 | -.2618728 .0656503 -3.99 0.000 -.390545 -.1332006
234 | -.008504 .0611995 -0.14 0.889 -.1284529 .1114448
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .2123535 .2559487 0.83 0.407 -.2892967 .7140037
1 212 | .1552183 .3287137 0.47 0.637 -.4890487 .7994853
1 213 | .1913565 .2389966 0.80 0.423 -.2770682 .6597812
1 214 | .0532254 .2281126 0.23 0.816 -.3938669 .5003178
1 215 | .0264756 .2784105 0.10 0.924 -.5191989 .5721501
1 216 | -.2004669 .4137294 -0.48 0.628 -1.011362 .6104279
1 217 | -.0830103 .2438975 -0.34 0.734 -.5610406 .3950199
1 218 | -.106545 .2440073 -0.44 0.662 -.5847905 .3717005
1 219 | .0815659 .2671759 0.31 0.760 -.4420892 .605221
1 220 | -.4930957 .4982785 -0.99 0.322 -1.469704 .4835122
1 221 | -.0022535 .2426976 -0.01 0.993 -.477932 .473425
1 222 | .0351552 .234963 0.15 0.881 -.4253638 .4956742
1 223 | -.1982635 .279085 -0.71 0.477 -.74526 .3487329
1 224 | -.1035555 .3303957 -0.31 0.754 -.7511192 .5440082
1 225 | -.145711 .2988651 -0.49 0.626 -.7314758 .4400537
1 226 | -.0046296 .2762564 -0.02 0.987 -.5460822 .536823
1 227 | .0851777 .3019097 0.28 0.778 -.5065545 .6769098
1 228 | -.2471593 .3387072 -0.73 0.466 -.9110132 .4166947
1 229 | .4088498 .228776 1.79 0.074 -.039543 .8572425
1 230 | .1170089 .2480079 0.47 0.637 -.3690776 .6030953
1 231 | .1824306 .2584583 0.71 0.480 -.3241384 .6889996
1 232 | -.0175462 .3512099 -0.05 0.960 -.7059049 .6708126
1 233 | .3691247 .2275996 1.62 0.105 -.0769623 .8152116
1 234 | .0520381 .2434743 0.21 0.831 -.4251627 .529239
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.6980817 .2913852 -2.40 0.017 -1.269186 -.1269773
1 212 | -.4146829 .3727165 -1.11 0.266 -1.145194 .315828
1 213 | -.5175868 .2291237 -2.26 0.024 -.966661 -.0685127
1 214 | -.1425041 .2264937 -0.63 0.529 -.5864236 .3014153
1 215 | -.1515512 .2284826 -0.66 0.507 -.5993689 .2962665
1 216 | -.2725964 .356835 -0.76 0.445 -.9719801 .4267872
1 217 | -.126435 .2025561 -0.62 0.532 -.5234377 .2705676
1 218 | -.1835539 .2072809 -0.89 0.376 -.589817 .2227092
1 219 | -.1795225 .249633 -0.72 0.472 -.6687941 .3097492
1 220 | -.3350218 .3495528 -0.96 0.338 -1.020133 .350089
1 221 | -.3391372 .2304228 -1.47 0.141 -.7907575 .1124832
1 222 | -.0770231 .2202633 -0.35 0.727 -.5087311 .354685
1 223 | .004469 .227171 0.02 0.984 -.440778 .4497159
1 224 | -.2838599 .3146741 -0.90 0.367 -.9006098 .33289
1 225 | -.1294614 .2485966 -0.52 0.603 -.6167018 .357779
1 226 | -.1888817 .2571084 -0.73 0.463 -.6928049 .3150416
1 227 | -.168497 .2867559 -0.59 0.557 -.7305283 .3935342
1 228 | -.1320117 .3098435 -0.43 0.670 -.7392939 .4752704
1 229 | -.0726034 .2081212 -0.35 0.727 -.4805134 .3353067
1 230 | -.150469 .212857 -0.71 0.480 -.567661 .266723
1 231 | -.012744 .2590523 -0.05 0.961 -.5204772 .4949892
1 232 | -.2181453 .2900451 -0.75 0.452 -.7866232 .3503326
1 233 | -.0651597 .2198831 -0.30 0.767 -.4961227 .3658034
1 234 | -.2697087 .2225689 -1.21 0.226 -.7059357 .1665184
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .2639426 .1230031 2.15 0.032 .0228609 .5050243
1 212 | .042401 .1513941 0.28 0.779 -.254326 .339128
1 213 | -.0871482 .1163331 -0.75 0.454 -.3151568 .1408604
1 214 | -.0663912 .1121531 -0.59 0.554 -.2862073 .1534249
1 215 | -.067848 .1252359 -0.54 0.588 -.313306 .1776099
1 216 | .0428904 .1597604 0.27 0.788 -.2702343 .3560151
1 217 | -.091193 .1141381 -0.80 0.424 -.3148995 .1325135
1 218 | -.1453264 .1105578 -1.31 0.189 -.3620157 .0713628
1 219 | .1353531 .1208436 1.12 0.263 -.101496 .3722022
1 220 | -.2503689 .1786306 -1.40 0.161 -.6004784 .0997406
1 221 | -.0466485 .1169575 -0.40 0.690 -.275881 .182584
1 222 | -.0360721 .1106313 -0.33 0.744 -.2529054 .1807613
1 223 | -.0908166 .1212614 -0.75 0.454 -.3284845 .1468513
1 224 | .0487611 .1411152 0.35 0.730 -.2278196 .3253418
1 225 | -.1746371 .1274234 -1.37 0.171 -.4243824 .0751082
1 226 | -.01735 .122288 -0.14 0.887 -.2570301 .2223301
1 227 | .0762853 .1418969 0.54 0.591 -.2018276 .3543981
1 228 | -.0256757 .1542815 -0.17 0.868 -.3280619 .2767105
1 229 | .0419193 .1164047 0.36 0.719 -.1862297 .2700683
1 230 | -.0791173 .1159798 -0.68 0.495 -.3064335 .1481989
1 231 | -.1097684 .1329707 -0.83 0.409 -.3703862 .1508494
1 232 | -.3003635 .1629217 -1.84 0.065 -.6196843 .0189572
1 233 | -.0905225 .1215478 -0.74 0.456 -.3287518 .1477068
1 234 | -.0191635 .1136272 -0.17 0.866 -.2418687 .2035417
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 158,275
Group variable: intersecti~d Number of groups = 6,331
R-sq: Obs per group:
within = 0.0124 min = 25
between = 0.0041 avg = 25.0
overall = 0.0084 max = 25
F(100,6330) = 21.55
corr(u_i, Xb) = -0.0947 Prob > F = 0.0000
(Std. Err. adjusted for 6,331 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
cyclistinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0027465 .004312 -0.64 0.524 -.0111995 .0057065
bike_route_tv | .0157093 .0058495 2.69 0.007 .0042423 .0271763
flag_street_improv | .0091183 .0124608 0.73 0.464 -.0153092 .0335457
flag_left_turn | -.0309114 .0157796 -1.96 0.050 -.0618448 .000022
|
quarterly |
211 | -.0511175 .0067452 -7.58 0.000 -.0643404 -.0378946
212 | -.0730817 .0063759 -11.46 0.000 -.0855807 -.0605827
213 | -.0057739 .0074712 -0.77 0.440 -.02042 .0088723
214 | .0095523 .007744 1.23 0.217 -.0056286 .0247332
215 | -.0365279 .0069735 -5.24 0.000 -.0501983 -.0228575
216 | -.0863157 .0060919 -14.17 0.000 -.0982578 -.0743736
217 | -.0057683 .0074881 -0.77 0.441 -.0204476 .0089109
218 | .0280007 .0080734 3.47 0.001 .0121741 .0438272
219 | -.0392833 .0068555 -5.73 0.000 -.0527224 -.0258442
220 | -.0882606 .0060364 -14.62 0.000 -.100094 -.0764273
221 | -.0119145 .0072322 -1.65 0.100 -.0260921 .0022631
222 | .0214393 .0079181 2.71 0.007 .0059171 .0369616
223 | -.0233736 .0071609 -3.26 0.001 -.0374114 -.0093357
224 | -.0666962 .0064618 -10.32 0.000 -.0793635 -.0540288
225 | -.0392281 .0069184 -5.67 0.000 -.0527904 -.0256657
226 | -.0316692 .0072898 -4.34 0.000 -.0459597 -.0173786
227 | -.0644479 .0067129 -9.60 0.000 -.0776075 -.0512884
228 | -.0703466 .0066308 -10.61 0.000 -.0833453 -.0573479
229 | -.0195177 .0072604 -2.69 0.007 -.0337506 -.0052848
230 | -.0112207 .0075146 -1.49 0.135 -.0259518 .0035104
231 | -.0488662 .0069115 -7.07 0.000 -.0624152 -.0353173
232 | -.0745879 .0063507 -11.74 0.000 -.0870374 -.0621385
233 | -.0288398 .0072261 -3.99 0.000 -.0430053 -.0146743
234 | -.000933 .0076132 -0.12 0.902 -.0158574 .0139914
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0238397 .0250155 0.95 0.341 -.0251992 .0728786
1 212 | .0191547 .0248041 0.77 0.440 -.0294697 .0677791
1 213 | .0231449 .0282541 0.82 0.413 -.0322428 .0785326
1 214 | .0053455 .0271485 0.20 0.844 -.0478749 .0585658
1 215 | .0079517 .0261769 0.30 0.761 -.0433638 .0592673
1 216 | .0069654 .0222734 0.31 0.755 -.0366981 .0506289
1 217 | -.0070064 .0253857 -0.28 0.783 -.056771 .0427582
1 218 | -.0168818 .0283375 -0.60 0.551 -.0724328 .0386692
1 219 | .0123307 .0261439 0.47 0.637 -.0389202 .0635817
1 220 | .0019546 .0209745 0.09 0.926 -.0391625 .0430716
1 221 | .00189 .0256107 0.07 0.941 -.0483156 .0520957
1 222 | .0011335 .0291188 0.04 0.969 -.0559492 .0582161
1 223 | -.0124601 .0253845 -0.49 0.624 -.0622223 .0373021
1 224 | .004914 .0238205 0.21 0.837 -.0417823 .0516103
1 225 | -.0036208 .0252054 -0.14 0.886 -.053032 .0457903
1 226 | .0044525 .0264089 0.17 0.866 -.047318 .0562229
1 227 | .0148755 .0239772 0.62 0.535 -.0321279 .0618789
1 228 | .0004166 .0215077 0.02 0.985 -.0417458 .0425789
1 229 | .0508457 .0291578 1.74 0.081 -.0063134 .1080048
1 230 | .0143744 .0278047 0.52 0.605 -.0401323 .068881
1 231 | .021341 .0245289 0.87 0.384 -.026744 .0694259
1 232 | .0117669 .0233277 0.50 0.614 -.0339633 .0574971
1 233 | .0423065 .0264287 1.60 0.109 -.0095027 .0941158
1 234 | .00624 .0277101 0.23 0.822 -.0480811 .0605611
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1518108 .0478378 -3.17 0.002 -.2455892 -.0580325
1 212 | -.1346989 .0521332 -2.58 0.010 -.2368976 -.0325001
1 213 | -.1193227 .0491697 -2.43 0.015 -.215712 -.0229333
1 214 | -.030825 .0615031 -0.50 0.616 -.1513919 .0897419
1 215 | -.0771101 .0513241 -1.50 0.133 -.1777227 .0235025
1 216 | -.1323544 .0498836 -2.65 0.008 -.2301432 -.0345655
1 217 | -.0431265 .0516621 -0.83 0.404 -.1444018 .0581487
1 218 | -.0281874 .0579464 -0.49 0.627 -.1417819 .0854071
1 219 | -.0802297 .0550471 -1.46 0.145 -.1881407 .0276814
1 220 | -.1389435 .0438317 -3.17 0.002 -.2248684 -.0530185
1 221 | -.0912836 .0521413 -1.75 0.080 -.1934982 .010931
1 222 | .0017549 .0652198 0.03 0.979 -.1260981 .1296078
1 223 | -.0316985 .0573616 -0.55 0.581 -.1441468 .0807497
1 224 | -.1183115 .0513761 -2.30 0.021 -.219026 -.0175969
1 225 | -.0774575 .0534798 -1.45 0.148 -.182296 .0273809
1 226 | -.0777576 .0572342 -1.36 0.174 -.189956 .0344408
1 227 | -.1029695 .052068 -1.98 0.048 -.2050405 -.0008985
1 228 | -.1060625 .0518418 -2.05 0.041 -.20769 -.0044349
1 229 | -.0403255 .0531373 -0.76 0.448 -.1444926 .0638417
1 230 | -.0542905 .0531157 -1.02 0.307 -.1584152 .0498343
1 231 | -.0676469 .055263 -1.22 0.221 -.1759811 .0406872
1 232 | -.1203218 .0473008 -2.54 0.011 -.2130474 -.0275963
1 233 | -.0538724 .0525729 -1.02 0.306 -.1569331 .0491882
1 234 | -.0715537 .0546736 -1.31 0.191 -.1787325 .0356252
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0205014 .0141455 1.45 0.147 -.0072285 .0482313
1 212 | -.0035935 .013343 -0.27 0.788 -.0297503 .0225633
1 213 | -.0109123 .0149563 -0.73 0.466 -.0402317 .0184071
1 214 | -.0081557 .0155676 -0.52 0.600 -.0386734 .0223621
1 215 | -.0091483 .014054 -0.65 0.515 -.0366989 .0184023
1 216 | -.0053353 .0124646 -0.43 0.669 -.0297701 .0190996
1 217 | -.0114476 .0147454 -0.78 0.438 -.0403536 .0174583
1 218 | -.019673 .0158179 -1.24 0.214 -.0506814 .0113354
1 219 | .0112305 .0144588 0.78 0.437 -.0171135 .0395746
1 220 | -.0165819 .0120093 -1.38 0.167 -.0401243 .0069604
1 221 | -.0060159 .0149044 -0.40 0.686 -.0352336 .0232017
1 222 | -.0031685 .016304 -0.19 0.846 -.0351298 .0287929
1 223 | -.01149 .0145063 -0.79 0.428 -.0399272 .0169473
1 224 | -.0021172 .0133462 -0.16 0.874 -.0282802 .0240458
1 225 | -.0183039 .0136034 -1.35 0.179 -.0449712 .0083635
1 226 | -.0039112 .0142842 -0.27 0.784 -.0319131 .0240907
1 227 | .0003035 .0137912 0.02 0.982 -.026732 .027339
1 228 | -.007307 .0133202 -0.55 0.583 -.033419 .018805
1 229 | .0042942 .0150693 0.28 0.776 -.0252466 .0338351
1 230 | -.0098757 .0147611 -0.67 0.503 -.0388125 .0190611
1 231 | -.0125693 .0137104 -0.92 0.359 -.0394462 .0143077
1 232 | -.0205361 .0127522 -1.61 0.107 -.0455347 .0044625
1 233 | -.0111691 .0142112 -0.79 0.432 -.039028 .0166897
1 234 | -.0017861 .0153668 -0.12 0.907 -.0319102 .028338
|
_cons | .1276502 .0047047 27.13 0.000 .1184274 .1368729
------------------------------+----------------------------------------------------------------
sigma_u | .08704511
sigma_e | .3161287
rho | .07047302 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
note: 11884 groups (297100 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -4086.0377
Iteration 1: log pseudolikelihood = -3945.1626
Iteration 2: log pseudolikelihood = -3930.1009
Iteration 3: log pseudolikelihood = -3929.4299
Iteration 4: log pseudolikelihood = -3929.2828
Iteration 5: log pseudolikelihood = -3929.2482
Iteration 6: log pseudolikelihood = -3929.241
Iteration 7: log pseudolikelihood = -3929.2397
Iteration 8: log pseudolikelihood = -3929.2396
Iteration 9: log pseudolikelihood = -3929.2396
Conditional fixed-effects Poisson regression Number of obs = 27,575
Group variable: intersection~d Number of groups = 1,103
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 21206.73
Log pseudolikelihood = -3929.2396 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_cyclistinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .0631944 .1297555 0.49 0.626 -.1911216 .3175104
bike_route_tv | .0532464 .2039053 0.26 0.794 -.3464007 .4528936
flag_street_improv | .2520686 .3296865 0.76 0.445 -.3941051 .8982423
flag_left_turn | -.2905921 .33892 -0.86 0.391 -.9548631 .3736789
|
quarterly |
211 | -.4505519 .229554 -1.96 0.050 -.9004696 -.0006343
212 | -1.4621 .3306711 -4.42 0.000 -2.110203 -.8139963
213 | -.2267287 .2146096 -1.06 0.291 -.6473557 .1938983
214 | .0622442 .2027449 0.31 0.759 -.3351285 .4596168
215 | -.6047368 .2450854 -2.47 0.014 -1.085095 -.1243783
216 | -1.387555 .3234821 -4.29 0.000 -2.021569 -.7535422
217 | -.2474363 .2131704 -1.16 0.246 -.6652427 .1703701
218 | .3688677 .1921293 1.92 0.055 -.0076989 .7454343
219 | -.6156995 .2496989 -2.47 0.014 -1.1051 -.1262986
220 | -1.312911 .3112917 -4.22 0.000 -1.923032 -.7027906
221 | -.0961952 .2066559 -0.47 0.642 -.5012333 .308843
222 | .2014587 .1941748 1.04 0.299 -.179117 .5820343
223 | -.02769 .2071454 -0.13 0.894 -.4336876 .3783075
224 | -1.012655 .2811405 -3.60 0.000 -1.56368 -.4616294
225 | -.2950751 .2200455 -1.34 0.180 -.7263563 .1362061
226 | .0445391 .209531 0.21 0.832 -.366134 .4552123
227 | -.8609261 .2661842 -3.23 0.001 -1.382638 -.3392146
228 | -.9080773 .2851603 -3.18 0.001 -1.466981 -.3491735
229 | -.140559 .2135113 -0.66 0.510 -.5590336 .2779155
230 | .1172426 .2038487 0.58 0.565 -.2822934 .5167787
231 | -.5018735 .2357896 -2.13 0.033 -.9640127 -.0397344
232 | -.6552966 .2494554 -2.63 0.009 -1.14422 -.166373
233 | -.4297863 .2274231 -1.89 0.059 -.8755274 .0159549
234 | .0483396 .2029368 0.24 0.812 -.3494092 .4460884
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.3536988 .900727 -0.39 0.695 -2.119091 1.411694
1 212 | .8580827 .8988574 0.95 0.340 -.9036453 2.619811
1 213 | .1292038 .7909422 0.16 0.870 -1.421014 1.679422
1 214 | -.8360787 .8739222 -0.96 0.339 -2.548935 .8767773
1 215 | -.0323352 .8897511 -0.04 0.971 -1.776215 1.711545
1 216 | -13.09283 .5823263 -22.48 0.000 -14.23417 -11.95149
1 217 | .5554821 .6269137 0.89 0.376 -.6732461 1.78421
1 218 | -1.641081 .8963448 -1.83 0.067 -3.397885 .1157224
1 219 | -.810607 1.126177 -0.72 0.472 -3.017873 1.396659
1 220 | -.1095272 1.158956 -0.09 0.925 -2.381038 2.161984
1 221 | -1.092325 1.134719 -0.96 0.336 -3.316333 1.131683
1 222 | .0611658 .6936744 0.09 0.930 -1.298411 1.420743
1 223 | .0207931 .7867074 0.03 0.979 -1.521125 1.562711
1 224 | -13.67659 .5561917 -24.59 0.000 -14.7667 -12.58647
1 225 | -1.205619 1.119408 -1.08 0.281 -3.399618 .9883793
1 226 | -.0575281 .7270878 -0.08 0.937 -1.482594 1.367538
1 227 | -.1098488 .8628367 -0.13 0.899 -1.800978 1.58128
1 228 | -.4101464 1.148684 -0.36 0.721 -2.661527 1.841234
1 229 | .2588389 .6294574 0.41 0.681 -.974875 1.492553
1 230 | -.2738385 .7877886 -0.35 0.728 -1.817876 1.270199
1 231 | .2872023 .7880897 0.36 0.716 -1.257425 1.83183
1 232 | -.3315805 1.145602 -0.29 0.772 -2.576919 1.913758
1 233 | -.3740318 .8830012 -0.42 0.672 -2.104682 1.356619
1 234 | -.2519059 .7788869 -0.32 0.746 -1.778496 1.274684
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.5354652 .8621157 -0.62 0.535 -2.225181 1.154251
1 212 | .5758646 .8646569 0.67 0.505 -1.118832 2.270561
1 213 | -.5928854 .850789 -0.70 0.486 -2.260401 1.07463
1 214 | -.3249532 .698864 -0.46 0.642 -1.694701 1.044795
1 215 | -.2835155 .8632331 -0.33 0.743 -1.975421 1.40839
1 216 | -13.19874 .5278129 -25.01 0.000 -14.23324 -12.16425
1 217 | -.2412106 .7520854 -0.32 0.748 -1.715271 1.23285
1 218 | -.0966876 .6252478 -0.15 0.877 -1.322151 1.128776
1 219 | -.3145013 .8645428 -0.36 0.716 -2.008974 1.379972
1 220 | .3891107 .8798671 0.44 0.658 -1.335397 2.113619
1 221 | -.2814892 .7434306 -0.38 0.705 -1.738586 1.175608
1 222 | .5289841 .5857389 0.90 0.366 -.6190432 1.677011
1 223 | -.3345331 .7384022 -0.45 0.651 -1.781775 1.112709
1 224 | .0448604 .8782546 0.05 0.959 -1.676487 1.766208
1 225 | -.6931492 .8649423 -0.80 0.423 -2.388405 1.002107
1 226 | -.2952974 .6390793 -0.46 0.644 -1.54787 .9572749
1 227 | -.9634943 1.130536 -0.85 0.394 -3.179305 1.252316
1 228 | -.6823519 1.123527 -0.61 0.544 -2.884425 1.519721
1 229 | .1875269 .6558246 0.29 0.775 -1.097866 1.47292
1 230 | -.5644378 .7474905 -0.76 0.450 -2.029492 .9006167
1 231 | -1.102282 1.112895 -0.99 0.322 -3.283515 1.078952
1 232 | -.7427658 1.110767 -0.67 0.504 -2.919828 1.434297
1 233 | .5565808 .640416 0.87 0.385 -.6986114 1.811773
1 234 | -.0053231 .6498789 -0.01 0.993 -1.279062 1.268416
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .286311 .3989114 0.72 0.473 -.4955411 1.068163
1 212 | -.3355755 .6153406 -0.55 0.586 -1.541621 .8704699
1 213 | -.5017214 .441062 -1.14 0.255 -1.366187 .3627441
1 214 | .2094596 .3506926 0.60 0.550 -.4778853 .8968045
1 215 | -.1236771 .4497762 -0.27 0.783 -1.005222 .757868
1 216 | -.1303132 .6326166 -0.21 0.837 -1.370219 1.109592
1 217 | -.2059006 .3953125 -0.52 0.602 -.9806989 .5688976
1 218 | -.3056299 .35514 -0.86 0.389 -1.001691 .3904316
1 219 | .1077379 .4322675 0.25 0.803 -.7394908 .9549666
1 220 | .0326836 .5560268 0.06 0.953 -1.057109 1.122476
1 221 | -.5899921 .45607 -1.29 0.196 -1.483873 .3038886
1 222 | -.2140136 .3614243 -0.59 0.554 -.9223921 .494365
1 223 | -.9423042 .463782 -2.03 0.042 -1.8513 -.0333081
1 224 | .221328 .4837436 0.46 0.647 -.7267921 1.169448
1 225 | .2594557 .3734849 0.69 0.487 -.4725612 .9914727
1 226 | -.001943 .3575465 -0.01 0.996 -.7027213 .6988354
1 227 | .6146868 .4145546 1.48 0.138 -.1978253 1.427199
1 228 | -.1571861 .5189724 -0.30 0.762 -1.174353 .8599812
1 229 | -.398669 .4067211 -0.98 0.327 -1.195828 .3984896
1 230 | -.3779408 .381002 -0.99 0.321 -1.124691 .3688094
1 231 | -.1610145 .4359719 -0.37 0.712 -1.015504 .6934747
1 232 | -1.676069 .7791058 -2.15 0.031 -3.203088 -.1490498
1 233 | .1661244 .3927721 0.42 0.672 -.6036947 .9359435
1 234 | -.2773569 .3799239 -0.73 0.465 -1.021994 .4672804
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 27,575
Group variable: intersecti~d Number of groups = 1,103
R-sq: Obs per group:
within = 0.0112 min = 25
between = 0.0003 avg = 25.0
overall = 0.0101 max = 25
F(100,1102) = 49.35
corr(u_i, Xb) = -0.0866 Prob > F = 0.0000
(Std. Err. adjusted for 1,103 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_cyclistinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | .0026871 .0061695 0.44 0.663 -.0094181 .0147923
bike_route_tv | .0022885 .0095076 0.24 0.810 -.0163666 .0209437
flag_street_improv | .0120747 .016278 0.74 0.458 -.0198648 .0440141
flag_left_turn | -.0155216 .0186009 -0.83 0.404 -.0520188 .0209756
|
quarterly |
211 | -.0229735 .0119774 -1.92 0.055 -.0464747 .0005277
212 | -.0490927 .01031 -4.76 0.000 -.0693221 -.0288632
213 | -.0127716 .0124563 -1.03 0.305 -.0372123 .0116692
214 | .0046382 .0136081 0.34 0.733 -.0220626 .0313389
215 | -.0289084 .0117908 -2.45 0.014 -.0520434 -.0057734
216 | -.047802 .0104144 -4.59 0.000 -.0682363 -.0273677
217 | -.0140803 .0123313 -1.14 0.254 -.0382759 .0101152
218 | .0292532 .0149159 1.96 0.050 -.0000136 .05852
219 | -.0291335 .0117943 -2.47 0.014 -.0522753 -.0059917
220 | -.0467749 .0105964 -4.41 0.000 -.0675664 -.0259834
221 | -.0054889 .0127669 -0.43 0.667 -.0305391 .0195613
222 | .0146658 .014008 1.05 0.295 -.0128196 .0421511
223 | -.001204 .0132623 -0.09 0.928 -.0272262 .0248182
224 | -.0405732 .0109371 -3.71 0.000 -.0620331 -.0191134
225 | -.015728 .0123478 -1.27 0.203 -.0399557 .0084998
226 | .0032218 .0139988 0.23 0.818 -.0242455 .0306892
227 | -.0369388 .011426 -3.23 0.001 -.0593579 -.0145197
228 | -.0382176 .0115151 -3.32 0.001 -.0608116 -.0156237
229 | -.0079618 .0130505 -0.61 0.542 -.0335684 .0176448
230 | .0085071 .0139684 0.61 0.543 -.0189005 .0359148
231 | -.0252503 .012043 -2.10 0.036 -.0488801 -.0016205
232 | -.0307722 .0117212 -2.63 0.009 -.0537706 -.0077738
233 | -.0224628 .0121585 -1.85 0.065 -.0463193 .0013936
234 | .0037853 .0135009 0.28 0.779 -.0227051 .0302757
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.022006 .0529756 -0.42 0.678 -.1259504 .0819384
1 212 | .0098813 .0528525 0.19 0.852 -.0938216 .1135842
1 213 | -.000932 .0571932 -0.02 0.987 -.1131519 .1112878
1 214 | -.0513129 .0529082 -0.97 0.332 -.1551251 .0524992
1 215 | -.0107499 .0528036 -0.20 0.839 -.1143569 .092857
1 216 | -.033881 .0417681 -0.81 0.417 -.1158349 .048073
1 217 | .0390515 .0573593 0.68 0.496 -.0734942 .1515972
1 218 | -.0860222 .0381424 -2.26 0.024 -.1608622 -.0111823
1 219 | -.0342855 .0477845 -0.72 0.473 -.1280444 .0594734
1 220 | -.0155671 .0476124 -0.33 0.744 -.1089882 .077854
1 221 | -.0498854 .0479792 -1.04 0.299 -.1440263 .0442556
1 222 | .0086188 .0649518 0.13 0.894 -.1188244 .136062
1 223 | -.0080157 .057201 -0.14 0.889 -.1202509 .1042196
1 224 | -.045046 .0418636 -1.08 0.282 -.1271874 .0370954
1 225 | -.0514554 .0478658 -1.07 0.283 -.1453738 .042463
1 226 | -.0041001 .0613254 -0.07 0.947 -.1244279 .1162277
1 227 | -.0113448 .0523679 -0.22 0.829 -.1140968 .0914073
1 228 | -.0231643 .0476192 -0.49 0.627 -.1165988 .0702703
1 229 | .012977 .0532983 0.24 0.808 -.0916006 .1175545
1 230 | -.0235046 .0576378 -0.41 0.684 -.1365969 .0895876
1 231 | .0065608 .0571195 0.11 0.909 -.1055145 .1186361
1 232 | -.0235719 .0476447 -0.49 0.621 -.1170564 .0699126
1 233 | -.0237418 .0527926 -0.45 0.653 -.1273272 .0798436
1 234 | -.0210705 .0573421 -0.37 0.713 -.1335826 .0914415
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0299413 .0460163 -0.65 0.515 -.1202308 .0603483
1 212 | .0007526 .0453306 0.02 0.987 -.0881913 .0896965
1 213 | -.0325401 .0452929 -0.72 0.473 -.1214102 .05633
1 214 | -.0243752 .0527121 -0.46 0.644 -.1278026 .0790521
1 215 | -.0198393 .0456254 -0.43 0.664 -.1093617 .069683
1 216 | -.0342756 .0373932 -0.92 0.360 -.1076456 .0390944
1 217 | -.0178923 .0489702 -0.37 0.715 -.1139776 .078193
1 218 | -.0054041 .0575562 -0.09 0.925 -.1183362 .1075281
1 219 | -.0210854 .0457643 -0.46 0.645 -.1108805 .0687096
1 220 | -.0025435 .0454523 -0.06 0.955 -.0917263 .0866393
1 221 | -.0209396 .0485451 -0.43 0.666 -.1161909 .0743118
1 222 | .0729287 .0699925 1.04 0.298 -.0644049 .2102622
1 223 | -.0234027 .048387 -0.48 0.629 -.1183437 .0715383
1 224 | -.0102825 .0456778 -0.23 0.822 -.0999077 .0793427
1 225 | -.037787 .046226 -0.82 0.414 -.128488 .0529139
1 226 | -.0214675 .0466564 -0.46 0.646 -.113013 .070078
1 227 | -.0361788 .0425528 -0.85 0.395 -.1196724 .0473148
1 228 | -.0279079 .0419063 -0.67 0.506 -.110133 .0543172
1 229 | .0117374 .0548137 0.21 0.830 -.0958135 .1192883
1 230 | -.0374384 .0490025 -0.76 0.445 -.1335871 .0587102
1 231 | -.0410324 .0420117 -0.98 0.329 -.1234643 .0413994
1 232 | -.0293056 .0413665 -0.71 0.479 -.1104715 .0518603
1 233 | .0378523 .0574951 0.66 0.510 -.0749598 .1506645
1 234 | -.0001507 .0546414 -0.00 0.998 -.1073637 .1070623
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0110751 .0248634 0.45 0.656 -.0377098 .05986
1 212 | -.0121399 .0201246 -0.60 0.546 -.0516266 .0273469
1 213 | -.0250522 .0231449 -1.08 0.279 -.0704654 .0203609
1 214 | .0166 .0276796 0.60 0.549 -.0377106 .0709107
1 215 | -.0091161 .0227455 -0.40 0.689 -.0537455 .0355133
1 216 | -.0099164 .0200778 -0.49 0.621 -.0493114 .0294785
1 217 | -.0121569 .0237072 -0.51 0.608 -.0586733 .0343595
1 218 | -.0252878 .0267553 -0.95 0.345 -.0777849 .0272094
1 219 | -.0008048 .0233046 -0.03 0.972 -.0465311 .0449215
1 220 | -.0063314 .0209822 -0.30 0.763 -.047501 .0348381
1 221 | -.0310363 .0237646 -1.31 0.192 -.0776653 .0155927
1 222 | -.0155665 .0273813 -0.57 0.570 -.0692919 .0381588
1 223 | -.0446634 .0229481 -1.95 0.052 -.0896902 .0003634
1 224 | -.0006414 .0220283 -0.03 0.977 -.0438635 .0425807
1 225 | .0117446 .0248798 0.47 0.637 -.0370726 .0605618
1 226 | .0005371 .0264288 0.02 0.984 -.0513193 .0523935
1 227 | .0204051 .024131 0.85 0.398 -.0269428 .0677529
1 228 | -.0104189 .0215973 -0.48 0.630 -.0527953 .0319575
1 229 | -.0229567 .0242609 -0.95 0.344 -.0705594 .0246459
1 230 | -.0249839 .0253134 -0.99 0.324 -.0746518 .0246841
1 231 | -.0101655 .0230769 -0.44 0.660 -.0554451 .0351142
1 232 | -.0360087 .0199811 -1.80 0.072 -.0752139 .0031965
1 233 | .0061144 .025006 0.24 0.807 -.0429502 .0551791
1 234 | -.018594 .0255856 -0.73 0.468 -.0687961 .031608
|
_cons | .0672315 .00797 8.44 0.000 .0515933 .0828696
------------------------------+----------------------------------------------------------------
sigma_u | .02301308
sigma_e | .21972553
rho | .01085052 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
note: 6876 groups (171900 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -36586.965
Iteration 1: log pseudolikelihood = -35710.064
Iteration 2: log pseudolikelihood = -35676.791
Iteration 3: log pseudolikelihood = -35676.505
Iteration 4: log pseudolikelihood = -35676.505
Conditional fixed-effects Poisson regression Number of obs = 152,775
Group variable: intersection~d Number of groups = 6,111
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 1565.03
Log pseudolikelihood = -35676.505 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_cyclistinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0375591 .0436533 -0.86 0.390 -.1231179 .0479998
bike_route_tv | .1844709 .0677192 2.72 0.006 .0517436 .3171981
flag_street_improv | .0787659 .1238421 0.64 0.525 -.1639601 .321492
flag_left_turn | -.1990005 .132798 -1.50 0.134 -.4592798 .0612788
|
quarterly |
211 | -.5308964 .0734353 -7.23 0.000 -.674827 -.3869658
212 | -.8329892 .0816039 -10.21 0.000 -.9929299 -.6730485
213 | -.0319222 .0635507 -0.50 0.615 -.1564792 .0926349
214 | .0726962 .061924 1.17 0.240 -.0486726 .1940649
215 | -.3233385 .0687058 -4.71 0.000 -.4579993 -.1886776
216 | -1.143709 .0902121 -12.68 0.000 -1.320521 -.9668966
217 | -.0310359 .0639732 -0.49 0.628 -.1564211 .0943493
218 | .1802119 .0611188 2.95 0.003 .0604213 .3000026
219 | -.354792 .068563 -5.17 0.000 -.4891729 -.220411
220 | -1.197325 .0921716 -12.99 0.000 -1.377978 -1.016672
221 | -.1018197 .0632309 -1.61 0.107 -.22575 .0221107
222 | .1501279 .0607163 2.47 0.013 .0311262 .2691296
223 | -.2270701 .0660867 -3.44 0.001 -.3565977 -.0975426
224 | -.7326198 .0778483 -9.41 0.000 -.8851996 -.5800399
225 | -.3838647 .0695914 -5.52 0.000 -.5202614 -.2474681
226 | -.329643 .0702382 -4.69 0.000 -.4673074 -.1919787
227 | -.7029953 .08109 -8.67 0.000 -.8619287 -.5440619
228 | -.8089173 .0857397 -9.43 0.000 -.976964 -.6408706
229 | -.1725848 .0658143 -2.62 0.009 -.3015784 -.0435912
230 | -.1180846 .0663604 -1.78 0.075 -.2481485 .0119793
231 | -.4916869 .0739892 -6.65 0.000 -.6367031 -.3466706
232 | -.9259634 .0828059 -11.18 0.000 -1.08826 -.7636668
233 | -.2470324 .068915 -3.58 0.000 -.3821034 -.1119615
234 | -.0141961 .0638812 -0.22 0.824 -.139401 .1110087
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .2690956 .2663061 1.01 0.312 -.2528547 .791046
1 212 | .108268 .3514725 0.31 0.758 -.5806055 .7971415
1 213 | .2098368 .2509776 0.84 0.403 -.2820702 .7017439
1 214 | .1260448 .2406836 0.52 0.600 -.3456863 .597776
1 215 | .040107 .2979557 0.13 0.893 -.5438754 .6240894
1 216 | -.1036854 .4190732 -0.25 0.805 -.9250538 .717683
1 217 | -.165025 .2714564 -0.61 0.543 -.6970697 .3670197
1 218 | .0002841 .256769 0.00 0.999 -.5029739 .5035422
1 219 | .1455511 .2817496 0.52 0.605 -.406668 .6977703
1 220 | -.5576138 .5545503 -1.01 0.315 -1.644512 .5292848
1 221 | .0774719 .2549829 0.30 0.761 -.4222854 .5772292
1 222 | .0346207 .2603013 0.13 0.894 -.4755605 .5448019
1 223 | -.2139816 .2901926 -0.74 0.461 -.7827486 .3547854
1 224 | .0021109 .3370605 0.01 0.995 -.6585155 .6627373
1 225 | -.0580674 .3111092 -0.19 0.852 -.6678303 .5516955
1 226 | -.0094975 .2996414 -0.03 0.975 -.5967839 .5777889
1 227 | .0966887 .310141 0.31 0.755 -.5111766 .704554
1 228 | -.2243008 .361749 -0.62 0.535 -.9333159 .4847142
1 229 | .4346223 .2456475 1.77 0.077 -.046838 .9160826
1 230 | .1642826 .2620732 0.63 0.531 -.3493714 .6779365
1 231 | .1712374 .2789577 0.61 0.539 -.3755096 .7179844
1 232 | .0298884 .3695585 0.08 0.936 -.694433 .7542098
1 233 | .4312803 .2446667 1.76 0.078 -.0482575 .9108182
1 234 | .0898891 .2607253 0.34 0.730 -.421123 .6009012
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.7205332 .3178991 -2.27 0.023 -1.343604 -.0974623
1 212 | -.5088474 .4087407 -1.24 0.213 -1.309964 .2922696
1 213 | -.5093475 .2441352 -2.09 0.037 -.9878437 -.0308513
1 214 | -.1239105 .2326843 -0.53 0.594 -.5799634 .3321425
1 215 | -.1385937 .2424346 -0.57 0.568 -.6137568 .3365693
1 216 | -.1925749 .3611533 -0.53 0.594 -.9004223 .5152726
1 217 | -.1143296 .2246647 -0.51 0.611 -.5546643 .3260051
1 218 | -.1975369 .2224834 -0.89 0.375 -.6335963 .2385225
1 219 | -.1665493 .2683511 -0.62 0.535 -.6925078 .3594092
1 220 | -.4548585 .4143793 -1.10 0.272 -1.267027 .3573101
1 221 | -.3445673 .2429467 -1.42 0.156 -.820734 .1315995
1 222 | -.1758385 .2312785 -0.76 0.447 -.629136 .277459
1 223 | .035248 .2361889 0.15 0.881 -.4276736 .4981697
1 224 | -.3155144 .3398674 -0.93 0.353 -.9816424 .3506135
1 225 | -.0739534 .2582233 -0.29 0.775 -.5800617 .4321549
1 226 | -.1791814 .2704943 -0.66 0.508 -.7093406 .3509778
1 227 | -.1053002 .2958679 -0.36 0.722 -.6851907 .4745902
1 228 | -.0889875 .3205769 -0.28 0.781 -.7173067 .5393317
1 229 | -.1046877 .2235041 -0.47 0.640 -.5427476 .3333722
1 230 | -.1094476 .2230749 -0.49 0.624 -.5466664 .3277712
1 231 | .0603751 .2696457 0.22 0.823 -.4681207 .588871
1 232 | -.1710184 .2999026 -0.57 0.569 -.7588166 .4167799
1 233 | -.1547876 .2397168 -0.65 0.518 -.6246239 .3150487
1 234 | -.3061942 .2345874 -1.31 0.192 -.765977 .1535886
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .2632055 .1290511 2.04 0.041 .0102701 .5161409
1 212 | .063327 .1559897 0.41 0.685 -.2424073 .3690612
1 213 | -.0575107 .1219174 -0.47 0.637 -.2964645 .1814431
1 214 | -.0947989 .1184779 -0.80 0.424 -.3270113 .1374136
1 215 | -.0622125 .1305935 -0.48 0.634 -.318171 .193746
1 216 | .0580286 .1653694 0.35 0.726 -.2660894 .3821466
1 217 | -.0836627 .1207753 -0.69 0.488 -.3203779 .1530525
1 218 | -.1254033 .1158825 -1.08 0.279 -.3525288 .1017221
1 219 | .1406286 .1261874 1.11 0.265 -.1066941 .3879513
1 220 | -.2828073 .1900406 -1.49 0.137 -.65528 .0896654
1 221 | -.0035802 .1208595 -0.03 0.976 -.2404605 .2333001
1 222 | -.0179068 .1169456 -0.15 0.878 -.247116 .2113024
1 223 | -.0236431 .1258765 -0.19 0.851 -.2703565 .2230703
1 224 | .039097 .1479882 0.26 0.792 -.2509545 .3291485
1 225 | -.23212 .1347939 -1.72 0.085 -.4963113 .0320712
1 226 | -.0233138 .1297641 -0.18 0.857 -.2776467 .2310192
1 227 | .0143521 .1514875 0.09 0.925 -.2825579 .3112622
1 228 | -.0137521 .1627396 -0.08 0.933 -.3327159 .3052117
1 229 | .080508 .1225164 0.66 0.511 -.1596198 .3206358
1 230 | -.0475368 .1214783 -0.39 0.696 -.2856298 .1905562
1 231 | -.1063297 .138897 -0.77 0.444 -.3785628 .1659035
1 232 | -.2067434 .1682375 -1.23 0.219 -.5364828 .122996
1 233 | -.1140309 .1280692 -0.89 0.373 -.3650419 .1369802
1 234 | .0063522 .118989 0.05 0.957 -.2268619 .2395664
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 152,775
Group variable: intersecti~d Number of groups = 6,111
R-sq: Obs per group:
within = 0.0114 min = 25
between = 0.0031 avg = 25.0
overall = 0.0079 max = 25
F(100,6110) = 20.00
corr(u_i, Xb) = -0.0959 Prob > F = 0.0000
(Std. Err. adjusted for 6,111 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_cyclistinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0035701 .0042344 -0.84 0.399 -.0118709 .0047307
bike_route_tv | .0161129 .0058424 2.76 0.006 .0046598 .027566
flag_street_improv | .007282 .0125354 0.58 0.561 -.0172918 .0318558
flag_left_turn | -.0272219 .0158045 -1.72 0.085 -.0582042 .0037604
|
quarterly |
211 | -.0489325 .0066985 -7.30 0.000 -.062064 -.035801
212 | -.0671213 .0063197 -10.62 0.000 -.0795102 -.0547324
213 | -.0037442 .007439 -0.50 0.615 -.0183273 .0108389
214 | .0090835 .0076652 1.19 0.236 -.0059429 .02411
215 | -.0327687 .0069388 -4.72 0.000 -.0463711 -.0191662
216 | -.0810544 .0060376 -13.42 0.000 -.0928903 -.0692185
217 | -.0034722 .007505 -0.46 0.644 -.0181846 .0112403
218 | .0237908 .0080023 2.97 0.003 .0081034 .0394781
219 | -.0355876 .0068547 -5.19 0.000 -.0490253 -.02215
220 | -.083273 .0059866 -13.91 0.000 -.0950088 -.0715372
221 | -.0114238 .0071629 -1.59 0.111 -.0254657 .002618
222 | .0195602 .0078262 2.50 0.012 .0042181 .0349024
223 | -.0240437 .007046 -3.41 0.001 -.0378562 -.0102311
224 | -.0620071 .0064422 -9.63 0.000 -.0746361 -.049378
225 | -.0378865 .0068419 -5.54 0.000 -.051299 -.024474
226 | -.033382 .0070753 -4.72 0.000 -.0472521 -.019512
227 | -.060252 .0066864 -9.01 0.000 -.0733597 -.0471442
228 | -.0661846 .0065713 -10.07 0.000 -.0790666 -.0533026
229 | -.0188476 .007218 -2.61 0.009 -.0329974 -.0046978
230 | -.0131238 .0074254 -1.77 0.077 -.0276802 .0014325
231 | -.0461562 .006862 -6.73 0.000 -.0596082 -.0327041
232 | -.0718981 .0062603 -11.48 0.000 -.0841704 -.0596257
233 | -.0259426 .00721 -3.60 0.000 -.0400767 -.0118084
234 | -.0016257 .0074904 -0.22 0.828 -.0163096 .0130582
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0276967 .0243427 1.14 0.255 -.0200237 .075417
1 212 | .0176958 .0240804 0.73 0.462 -.0295103 .064902
1 213 | .0236601 .0276058 0.86 0.391 -.0304569 .0777771
1 214 | .013363 .0270024 0.49 0.621 -.0395712 .0662973
1 215 | .0094611 .0260242 0.36 0.716 -.0415555 .0604778
1 216 | .0119885 .0219799 0.55 0.585 -.0310999 .0550769
1 217 | -.0134689 .0249404 -0.54 0.589 -.0623609 .0354231
1 218 | -.0035037 .0284325 -0.12 0.902 -.0592414 .052234
1 219 | .01756 .0262049 0.67 0.503 -.0338109 .0689308
1 220 | .0042371 .0203157 0.21 0.835 -.0355888 .044063
1 221 | .0096581 .0256028 0.38 0.706 -.0405324 .0598486
1 222 | .0003721 .0292837 0.01 0.990 -.0570343 .0577786
1 223 | -.0112863 .0240681 -0.47 0.639 -.0584682 .0358956
1 224 | .0116699 .0236045 0.49 0.621 -.0346032 .0579431
1 225 | .0041883 .0247743 0.17 0.866 -.0443781 .0527547
1 226 | .0056694 .0253871 0.22 0.823 -.0440982 .0554371
1 227 | .0166769 .0227979 0.73 0.464 -.0280151 .0613689
1 228 | .0037768 .0213511 0.18 0.860 -.0380787 .0456324
1 229 | .0503701 .0287619 1.75 0.080 -.0060134 .1067535
1 230 | .0187012 .0271335 0.69 0.491 -.03449 .0718923
1 231 | .020621 .0240512 0.86 0.391 -.0265279 .0677699
1 232 | .0156919 .0228302 0.69 0.492 -.0290634 .0604472
1 233 | .0469663 .0266756 1.76 0.078 -.0053272 .0992598
1 234 | .0098534 .0274338 0.36 0.719 -.0439265 .0636334
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1418584 .047719 -2.97 0.003 -.2354044 -.0483125
1 212 | -.129554 .0509755 -2.54 0.011 -.2294839 -.0296242
1 213 | -.1084304 .0497913 -2.18 0.029 -.2060388 -.010822
1 214 | -.0244712 .0589793 -0.41 0.678 -.1400913 .091149
1 215 | -.0668642 .0513438 -1.30 0.193 -.1675162 .0337877
1 216 | -.1150239 .0495582 -2.32 0.020 -.2121755 -.0178724
1 217 | -.0352578 .0539252 -0.65 0.513 -.1409703 .0704546
1 218 | -.0315929 .0569143 -0.56 0.579 -.143165 .0799792
1 219 | -.0698796 .055892 -1.25 0.211 -.1794477 .0396884
1 220 | -.1331736 .0451839 -2.95 0.003 -.22175 -.0445973
1 221 | -.0847111 .0510784 -1.66 0.097 -.1848427 .0154205
1 222 | -.02612 .0602017 -0.43 0.664 -.1441366 .0918966
1 223 | -.0228428 .0560514 -0.41 0.684 -.1327232 .0870376
1 224 | -.1107116 .0508162 -2.18 0.029 -.2103294 -.0110939
1 225 | -.0638102 .0522895 -1.22 0.222 -.1663161 .0386956
1 226 | -.0730832 .0555512 -1.32 0.188 -.1819831 .0358166
1 227 | -.0871308 .0512749 -1.70 0.089 -.1876477 .0133861
1 228 | -.0920391 .05104 -1.80 0.071 -.1920954 .0080172
1 229 | -.0436517 .0526826 -0.83 0.407 -.1469282 .0596248
1 230 | -.0435635 .0520884 -0.84 0.403 -.1456751 .0585481
1 231 | -.050254 .0552706 -0.91 0.363 -.1586038 .0580959
1 232 | -.1066867 .046221 -2.31 0.021 -.1972961 -.0160772
1 233 | -.0648868 .0510338 -1.27 0.204 -.1649311 .0351575
1 234 | -.0738911 .0523408 -1.41 0.158 -.1764975 .0287152
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .019276 .0139158 1.39 0.166 -.0080039 .0465558
1 212 | -.0014069 .0132307 -0.11 0.915 -.0273438 .02453
1 213 | -.0067987 .0150117 -0.45 0.651 -.0362269 .0226295
1 214 | -.0114627 .0153277 -0.75 0.455 -.0415103 .018585
1 215 | -.0078181 .0139605 -0.56 0.575 -.0351857 .0195495
1 216 | -.003661 .0123332 -0.30 0.767 -.0278384 .0205164
1 217 | -.0097864 .0148099 -0.66 0.509 -.038819 .0192462
1 218 | -.0156979 .0155845 -1.01 0.314 -.046249 .0148532
1 219 | .0118076 .0143758 0.82 0.411 -.0163741 .0399893
1 220 | -.0159214 .0118391 -1.34 0.179 -.0391303 .0072875
1 221 | -.00056 .0147403 -0.04 0.970 -.0294562 .0283362
1 222 | -.0003333 .0162208 -0.02 0.984 -.0321318 .0314651
1 223 | -.0038678 .0143887 -0.27 0.788 -.0320748 .0243392
1 224 | -.0019601 .013246 -0.15 0.882 -.0279269 .0240068
1 225 | -.0211142 .0132415 -1.59 0.111 -.0470721 .0048437
1 226 | -.0042452 .0139561 -0.30 0.761 -.0316042 .0231137
1 227 | -.0034669 .0135693 -0.26 0.798 -.0300676 .0231338
1 228 | -.0056697 .013307 -0.43 0.670 -.031756 .0204167
1 229 | .0086039 .0150859 0.57 0.568 -.0209697 .0381776
1 230 | -.0058141 .0145593 -0.40 0.690 -.0343554 .0227272
1 231 | -.0113138 .0135089 -0.84 0.402 -.0377961 .0151684
1 232 | -.0147476 .0126567 -1.17 0.244 -.0395592 .0100641
1 233 | -.0125683 .0140198 -0.90 0.370 -.0400521 .0149154
1 234 | .001485 .0152086 0.10 0.922 -.0283292 .0312993
|
_cons | .1199884 .0046706 25.69 0.000 .1108325 .1291444
------------------------------+----------------------------------------------------------------
sigma_u | .07953939
sigma_e | .30787603
rho | .06256804 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_cyclistinjured.rtf
dir : seeout
Outcome of Motorist injured¶
[21]:
**************************************
global outcome1 motoristinjured
global outcome2 latenight_$outcome1
global outcome3 day_$outcome1
global filename qt_results_xt_$outcome1
xtpoisson $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word replace ctitle(xtpoisson robust_se $outcome1)
xtreg $outcome1 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(xtreg cluster intersection_id $outcome1)
xtpoisson $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(cluster robust_se $outcome2)
xtreg $outcome2 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(cluster intersection_id $outcome2)
xtpoisson $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(robust)
outreg2 using "$filename", word append ctitle(cluster robust_se $outcome3)
xtreg $outcome3 i.flag_LPIS $time_variant_var $time_var $time_trend if e(sample)==1, fe vce(cluster intersection_id)
outreg2 using "$filename", word append ctitle(cluster intersection_id $outcome3)
capture erase $filename.txt
note: 2811 groups (70275 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -170863.34
Iteration 1: log pseudolikelihood = -169855.62
Iteration 2: log pseudolikelihood = -169846.76
Iteration 3: log pseudolikelihood = -169846.76
Conditional fixed-effects Poisson regression Number of obs = 254,400
Group variable: intersection~d Number of groups = 10,176
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 840.85
Log pseudolikelihood = -169846.76 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
motoristinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0855797 .0290329 -2.95 0.003 -.1424831 -.0286762
bike_route_tv | .0359135 .0418922 0.86 0.391 -.0461938 .1180207
flag_street_improv | -.0357354 .0751165 -0.48 0.634 -.1829611 .1114902
flag_left_turn | -.0791564 .1025393 -0.77 0.440 -.2801297 .1218168
|
quarterly |
211 | -.1271596 .038778 -3.28 0.001 -.2031631 -.0511562
212 | -.2401986 .0408088 -5.89 0.000 -.3201825 -.1602147
213 | .0102745 .0363921 0.28 0.778 -.0610527 .0816018
214 | .0003335 .0369705 0.01 0.993 -.0721274 .0727943
215 | -.1333077 .0385828 -3.46 0.001 -.2089286 -.0576867
216 | -.2951923 .0405532 -7.28 0.000 -.374675 -.2157095
217 | -.1034649 .0394577 -2.62 0.009 -.1808006 -.0261291
218 | -.104 .0386693 -2.69 0.007 -.1797905 -.0282095
219 | -.1797661 .0399172 -4.50 0.000 -.2580023 -.1015299
220 | -.440236 .0429466 -10.25 0.000 -.5244099 -.3560621
221 | -.1408953 .0402335 -3.50 0.000 -.2197514 -.0620391
222 | -.1212149 .0376983 -3.22 0.001 -.1951022 -.0473276
223 | -.1739922 .0400017 -4.35 0.000 -.2523941 -.0955903
224 | -.3639781 .0408823 -8.90 0.000 -.4441059 -.2838502
225 | -.2806537 .0423488 -6.63 0.000 -.3636559 -.1976515
226 | -.4153872 .0431848 -9.62 0.000 -.5000279 -.3307466
227 | -.5112297 .0440882 -11.60 0.000 -.597641 -.4248183
228 | -.257094 .041221 -6.24 0.000 -.3378856 -.1763024
229 | -.0186464 .0405014 -0.46 0.645 -.0980276 .0607348
230 | -.1304304 .0407075 -3.20 0.001 -.2102156 -.0506451
231 | -.1533849 .0423348 -3.62 0.000 -.2363597 -.0704101
232 | -.2574596 .0412748 -6.24 0.000 -.3383567 -.1765625
233 | .0117216 .0397704 0.29 0.768 -.066227 .0896703
234 | -.047211 .0405971 -1.16 0.245 -.1267797 .0323578
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.0763602 .1731085 -0.44 0.659 -.4156466 .2629261
1 212 | -.3039507 .1880613 -1.62 0.106 -.6725441 .0646427
1 213 | -.1049004 .1517674 -0.69 0.489 -.402359 .1925581
1 214 | -.0057228 .1615281 -0.04 0.972 -.322312 .3108665
1 215 | -.1259146 .1399101 -0.90 0.368 -.4001334 .1483042
1 216 | -.0394955 .1659608 -0.24 0.812 -.3647728 .2857817
1 217 | -.4440605 .1742551 -2.55 0.011 -.7855943 -.1025268
1 218 | .0187784 .1670677 0.11 0.911 -.3086684 .3462251
1 219 | -.0387583 .1704956 -0.23 0.820 -.3729234 .2954069
1 220 | -.1482338 .189934 -0.78 0.435 -.5204977 .2240301
1 221 | -.0122253 .1774851 -0.07 0.945 -.3600897 .3356392
1 222 | -.0758181 .1552838 -0.49 0.625 -.3801687 .2285326
1 223 | -.1550122 .1520412 -1.02 0.308 -.4530074 .142983
1 224 | -.3245728 .1827938 -1.78 0.076 -.6828419 .0336964
1 225 | .1033241 .1647629 0.63 0.531 -.2196053 .4262535
1 226 | -.2016602 .1794338 -1.12 0.261 -.553344 .1500236
1 227 | -.3354696 .1883656 -1.78 0.075 -.7046594 .0337202
1 228 | -.4747001 .1836502 -2.58 0.010 -.8346479 -.1147523
1 229 | -.2220181 .1640097 -1.35 0.176 -.5434712 .0994351
1 230 | -.3675679 .1713288 -2.15 0.032 -.7033662 -.0317696
1 231 | -.2055997 .1671962 -1.23 0.219 -.5332982 .1220988
1 232 | -.0944714 .18043 -0.52 0.601 -.4481077 .2591648
1 233 | -.327556 .1617617 -2.02 0.043 -.6446031 -.010509
1 234 | -.2618626 .1667697 -1.57 0.116 -.5887252 .065
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1325399 .152611 -0.87 0.385 -.4316519 .1665721
1 212 | -.1295841 .1462184 -0.89 0.375 -.416167 .1569987
1 213 | -.0023378 .1225202 -0.02 0.985 -.242473 .2377975
1 214 | -.2246733 .1484786 -1.51 0.130 -.515686 .0663394
1 215 | .050781 .1427454 0.36 0.722 -.2289949 .3305568
1 216 | -.2304634 .1687181 -1.37 0.172 -.5611448 .1002181
1 217 | -.2464064 .1479634 -1.67 0.096 -.5364093 .0435966
1 218 | -.0551635 .1340744 -0.41 0.681 -.3179444 .2076174
1 219 | -.0766818 .1540361 -0.50 0.619 -.3785869 .2252234
1 220 | -.2945571 .1590528 -1.85 0.064 -.6062948 .0171807
1 221 | -.056829 .1532872 -0.37 0.711 -.3572665 .2436084
1 222 | -.0345982 .1424006 -0.24 0.808 -.3136983 .244502
1 223 | -.0994161 .1454447 -0.68 0.494 -.3844825 .1856504
1 224 | -.0496264 .1434284 -0.35 0.729 -.3307409 .2314882
1 225 | -.1453531 .1622725 -0.90 0.370 -.4634014 .1726951
1 226 | -.0888466 .1622011 -0.55 0.584 -.4067549 .2290617
1 227 | -.2223392 .1660715 -1.34 0.181 -.5478333 .103155
1 228 | -.0523387 .144636 -0.36 0.717 -.3358201 .2311427
1 229 | -.1083776 .1416968 -0.76 0.444 -.3860982 .169343
1 230 | -.2000784 .1511927 -1.32 0.186 -.4964106 .0962538
1 231 | -.2396129 .1461716 -1.64 0.101 -.526104 .0468781
1 232 | -.1964928 .1586373 -1.24 0.215 -.5074162 .1144305
1 233 | -.1909284 .151234 -1.26 0.207 -.4873416 .1054848
1 234 | -.1469055 .1537635 -0.96 0.339 -.4482764 .1544654
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0242097 .0846932 0.29 0.775 -.141786 .1902053
1 212 | .0955715 .0858964 1.11 0.266 -.0727823 .2639253
1 213 | .0815073 .0791055 1.03 0.303 -.0735366 .2365512
1 214 | .2400679 .0912978 2.63 0.009 .0611275 .4190083
1 215 | .1888899 .0802053 2.36 0.019 .0316904 .3460894
1 216 | .0281805 .0885915 0.32 0.750 -.1454557 .2018167
1 217 | .1353256 .0815871 1.66 0.097 -.0245822 .2952334
1 218 | .0773603 .0829029 0.93 0.351 -.0851264 .2398469
1 219 | .1772117 .0857936 2.07 0.039 .0090593 .3453641
1 220 | .2182029 .0942421 2.32 0.021 .0334918 .402914
1 221 | .1295298 .0842138 1.54 0.124 -.0355263 .2945859
1 222 | .1014842 .0823518 1.23 0.218 -.0599224 .2628907
1 223 | .1229939 .0821296 1.50 0.134 -.037977 .2839649
1 224 | .1243942 .0865465 1.44 0.151 -.0452338 .2940221
1 225 | .0476728 .086022 0.55 0.579 -.1209273 .2162729
1 226 | .1328914 .0916224 1.45 0.147 -.0466852 .3124679
1 227 | .1087228 .096638 1.13 0.261 -.0806841 .2981297
1 228 | .0618651 .0917617 0.67 0.500 -.1179845 .2417146
1 229 | .0180518 .0846429 0.21 0.831 -.1478452 .1839489
1 230 | .1046146 .0847186 1.23 0.217 -.0614308 .27066
1 231 | .0141091 .0860872 0.16 0.870 -.1546188 .1828369
1 232 | .0436307 .0901796 0.48 0.629 -.133118 .2203794
1 233 | .0505727 .083098 0.61 0.543 -.1122964 .2134419
1 234 | .0781494 .0845723 0.92 0.355 -.0876092 .243908
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 254,400
Group variable: intersecti~d Number of groups = 10,176
R-sq: Obs per group:
within = 0.0038 min = 25
between = 0.0305 avg = 25.0
overall = 0.0000 max = 25
F(100,10175) = 8.23
corr(u_i, Xb) = -0.1589 Prob > F = 0.0000
(Std. Err. adjusted for 10,176 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
motoristinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0361506 .0118558 -3.05 0.002 -.0593903 -.0129109
bike_route_tv | .0129867 .0148616 0.87 0.382 -.016145 .0421185
flag_street_improv | -.0271195 .0389072 -0.70 0.486 -.1033853 .0491463
flag_left_turn | -.0408256 .0517757 -0.79 0.430 -.1423162 .0606649
|
quarterly |
211 | -.0518878 .0158005 -3.28 0.001 -.0828599 -.0209158
212 | -.0925279 .0157154 -5.89 0.000 -.1233333 -.0617226
213 | .0043544 .0158461 0.27 0.783 -.026707 .0354158
214 | -.0007504 .01602 -0.05 0.963 -.0321527 .030652
215 | -.054136 .0157174 -3.44 0.001 -.0849453 -.0233267
216 | -.1108915 .0153034 -7.25 0.000 -.1408892 -.0808938
217 | -.0428259 .0162313 -2.64 0.008 -.0746425 -.0110094
218 | -.0429575 .0159533 -2.69 0.007 -.0742292 -.0116859
219 | -.0716314 .0158133 -4.53 0.000 -.1026285 -.0406343
220 | -.154634 .0151514 -10.21 0.000 -.1843338 -.1249343
221 | -.0574704 .0162435 -3.54 0.000 -.089311 -.0256299
222 | -.0498605 .0154344 -3.23 0.001 -.0801149 -.0196061
223 | -.069533 .015949 -4.36 0.000 -.1007962 -.0382697
224 | -.1319232 .0150693 -8.75 0.000 -.1614619 -.1023844
225 | -.1061108 .0159001 -6.67 0.000 -.1372782 -.0749435
226 | -.1466058 .0153287 -9.56 0.000 -.176653 -.1165585
227 | -.1725391 .0149514 -11.54 0.000 -.2018467 -.1432314
228 | -.0978052 .0157307 -6.22 0.000 -.1286405 -.06697
229 | -.0088422 .0171722 -0.51 0.607 -.042503 .0248187
230 | -.0533418 .0163586 -3.26 0.001 -.085408 -.0212757
231 | -.0618908 .0167244 -3.70 0.000 -.0946739 -.0291077
232 | -.0978543 .015784 -6.20 0.000 -.1287941 -.0669146
233 | .003805 .0170032 0.22 0.823 -.0295245 .0371345
234 | -.020779 .0168554 -1.23 0.218 -.0538188 .0122609
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.0218718 .0616371 -0.35 0.723 -.1426926 .098949
1 212 | -.0753826 .0579587 -1.30 0.193 -.1889931 .0382279
1 213 | -.040799 .0581774 -0.70 0.483 -.1548383 .0732402
1 214 | -.0041684 .0647043 -0.06 0.949 -.1310015 .1226648
1 215 | -.0384059 .0511315 -0.75 0.453 -.1386338 .0618219
1 216 | -.003245 .0556899 -0.06 0.954 -.1124082 .1059182
1 217 | -.127374 .0551696 -2.31 0.021 -.2355173 -.0192306
1 218 | .0098588 .0634953 0.16 0.877 -.1146045 .134322
1 219 | -.0078164 .0616573 -0.13 0.899 -.128677 .1130441
1 220 | -.0250382 .0584203 -0.43 0.668 -.1395536 .0894771
1 221 | -.0005019 .0656188 -0.01 0.994 -.1291278 .128124
1 222 | -.022802 .0567558 -0.40 0.688 -.1340547 .0884506
1 223 | -.0442133 .053208 -0.83 0.406 -.1485115 .060085
1 224 | -.0677651 .055012 -1.23 0.218 -.1755995 .0400693
1 225 | .0387396 .0591807 0.65 0.513 -.0772662 .1547454
1 226 | -.0364389 .0543821 -0.67 0.503 -.1430386 .0701608
1 227 | -.0533966 .0528606 -1.01 0.312 -.1570139 .0502206
1 228 | -.1063575 .0536428 -1.98 0.047 -.2115081 -.001207
1 229 | -.0760017 .0576318 -1.32 0.187 -.1889714 .0369681
1 230 | -.1021712 .0537537 -1.90 0.057 -.207539 .0031967
1 231 | -.0570274 .0567507 -1.00 0.315 -.16827 .0542153
1 232 | -.0190508 .0594452 -0.32 0.749 -.1355751 .0974735
1 233 | -.1099302 .0562839 -1.95 0.051 -.2202577 .0003972
1 234 | -.084124 .056585 -1.49 0.137 -.1950418 .0267938
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2405849 .1664027 -1.45 0.148 -.566767 .0855972
1 212 | -.3031241 .1577397 -1.92 0.055 -.6123251 .0060768
1 213 | .0121377 .1514631 0.08 0.936 -.2847597 .3090352
1 214 | -.231178 .1702532 -1.36 0.175 -.5649078 .1025518
1 215 | -.0297228 .1726311 -0.17 0.863 -.3681138 .3086681
1 216 | -.4125042 .1617497 -2.55 0.011 -.7295655 -.095443
1 217 | -.3348573 .1560445 -2.15 0.032 -.6407353 -.0289793
1 218 | -.1379688 .1544913 -0.89 0.372 -.4408023 .1648646
1 219 | -.2026448 .1689573 -1.20 0.230 -.5338344 .1285449
1 220 | -.5037257 .1477636 -3.41 0.001 -.7933716 -.2140799
1 221 | -.1604174 .1745264 -0.92 0.358 -.5025235 .1816888
1 222 | -.1296042 .1638566 -0.79 0.429 -.4507955 .1915871
1 223 | -.2320437 .1619212 -1.43 0.152 -.5494411 .0853538
1 224 | -.3045576 .1524753 -2.00 0.046 -.6034393 -.005676
1 225 | -.3357078 .1623799 -2.07 0.039 -.6540044 -.0174112
1 226 | -.3593029 .1572621 -2.28 0.022 -.6675677 -.0510382
1 227 | -.493074 .152894 -3.22 0.001 -.7927765 -.1933716
1 228 | -.2582008 .1552338 -1.66 0.096 -.5624897 .0460881
1 229 | -.1635414 .1599699 -1.02 0.307 -.4771139 .1500311
1 230 | -.3169319 .1601 -1.98 0.048 -.6307594 -.0031044
1 231 | -.36645 .1517875 -2.41 0.016 -.6639834 -.0689167
1 232 | -.3771111 .159866 -2.36 0.018 -.6904799 -.0637422
1 233 | -.2348468 .1683808 -1.39 0.163 -.5649063 .0952127
1 234 | -.2235279 .171901 -1.30 0.194 -.5604878 .1134319
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0185371 .0312939 0.59 0.554 -.0428051 .0798793
1 212 | .0468116 .0306878 1.53 0.127 -.0133427 .1069658
1 213 | .0316447 .0322222 0.98 0.326 -.0315172 .0948066
1 214 | .1036513 .0405297 2.56 0.011 .024205 .1830976
1 215 | .077305 .0317405 2.44 0.015 .0150873 .1395227
1 216 | .0291522 .0299809 0.97 0.331 -.0296162 .0879206
1 217 | .0583602 .0316719 1.84 0.065 -.0037231 .1204435
1 218 | .0353049 .0317427 1.11 0.266 -.026917 .0975268
1 219 | .0738773 .0328273 2.25 0.024 .0095294 .1382252
1 220 | .0870683 .0314287 2.77 0.006 .0254618 .1486748
1 221 | .055945 .0322653 1.73 0.083 -.0073015 .1191914
1 222 | .0452175 .03135 1.44 0.149 -.0162347 .1066697
1 223 | .0548998 .0308797 1.78 0.075 -.0056305 .1154302
1 224 | .0584969 .0296636 1.97 0.049 .0003504 .1166435
1 225 | .0344052 .0297497 1.16 0.248 -.0239101 .0927206
1 226 | .0621306 .0301616 2.06 0.039 .003008 .1212533
1 227 | .058207 .0297703 1.96 0.051 -.0001487 .1165628
1 228 | .0381749 .0315586 1.21 0.226 -.0236861 .100036
1 229 | .0117755 .0326814 0.36 0.719 -.0522865 .0758374
1 230 | .0494123 .0317161 1.56 0.119 -.0127575 .1115822
1 231 | .0210144 .0309208 0.68 0.497 -.0395966 .0816253
1 232 | .0349228 .0309941 1.13 0.260 -.0258318 .0956775
1 233 | .0237024 .032713 0.72 0.469 -.0404214 .0878263
1 234 | .0367719 .0326884 1.12 0.261 -.0273038 .1008475
|
_cons | .4300637 .0101791 42.25 0.000 .4101107 .4500168
------------------------------+----------------------------------------------------------------
sigma_u | .47463597
sigma_e | .93294543
rho | .20560938 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
note: 8436 groups (210900 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -37255.5
Iteration 1: log pseudolikelihood = -36998.985
Iteration 2: log pseudolikelihood = -36986.931
Iteration 3: log pseudolikelihood = -36986.716
Iteration 4: log pseudolikelihood = -36986.715
Conditional fixed-effects Poisson regression Number of obs = 113,775
Group variable: intersection~d Number of groups = 4,551
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 236.75
Log pseudolikelihood = -36986.715 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_motoristinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.129464 .0676289 -1.91 0.056 -.2620141 .0030862
bike_route_tv | .0044552 .0973843 0.05 0.964 -.1864145 .1953249
flag_street_improv | -.1200449 .2189418 -0.55 0.583 -.549163 .3090732
flag_left_turn | -.2158812 .2174643 -0.99 0.321 -.6421034 .210341
|
quarterly |
211 | -.2059952 .1029216 -2.00 0.045 -.4077178 -.0042727
212 | -.392233 .118969 -3.30 0.001 -.6254079 -.159058
213 | -.1880876 .1030026 -1.83 0.068 -.3899689 .0137937
214 | -.2502856 .1038543 -2.41 0.016 -.4538363 -.0467349
215 | -.1993658 .1087907 -1.83 0.067 -.4125917 .0138601
216 | -.4276032 .1118684 -3.82 0.000 -.6468613 -.2083451
217 | -.1130236 .1051269 -1.08 0.282 -.3190686 .0930214
218 | -.1698462 .1050368 -1.62 0.106 -.3757146 .0360221
219 | -.2608004 .1089864 -2.39 0.017 -.4744097 -.047191
220 | -.6128602 .1220967 -5.02 0.000 -.8521653 -.373555
221 | -.2306497 .1082562 -2.13 0.033 -.4428279 -.0184714
222 | -.172047 .1014219 -1.70 0.090 -.3708303 .0267362
223 | -.3391314 .1081686 -3.14 0.002 -.5511381 -.1271248
224 | -.432667 .1063829 -4.07 0.000 -.6411737 -.2241603
225 | -.3663918 .1151273 -3.18 0.001 -.5920371 -.1407465
226 | -.3774055 .1144178 -3.30 0.001 -.6016602 -.1531507
227 | -.5421137 .1182081 -4.59 0.000 -.7737973 -.3104301
228 | -.3355913 .1129973 -2.97 0.003 -.5570619 -.1141207
229 | -.1205226 .1013857 -1.19 0.235 -.3192349 .0781897
230 | -.1970692 .1049207 -1.88 0.060 -.40271 .0085715
231 | -.2762896 .1056341 -2.62 0.009 -.4833287 -.0692506
232 | -.3351918 .1073769 -3.12 0.002 -.5456466 -.124737
233 | -.0979291 .1053073 -0.93 0.352 -.3043276 .1084694
234 | -.0523829 .106027 -0.49 0.621 -.2601919 .1554262
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.5186924 .5058068 -1.03 0.305 -1.510056 .4726708
1 212 | -.8126883 .4468603 -1.82 0.069 -1.688518 .0631419
1 213 | -.6784854 .4393914 -1.54 0.123 -1.539677 .1827058
1 214 | -.2245829 .4506416 -0.50 0.618 -1.107824 .6586584
1 215 | -.7242895 .3841985 -1.89 0.059 -1.477305 .0287257
1 216 | -.8590259 .5085631 -1.69 0.091 -1.855791 .1377394
1 217 | -1.125507 .4815771 -2.34 0.019 -2.069381 -.1816331
1 218 | -.8090804 .4220563 -1.92 0.055 -1.636296 .0181348
1 219 | .3723631 .4110837 0.91 0.365 -.4333461 1.178072
1 220 | -.4908467 .5742754 -0.85 0.393 -1.616406 .6347123
1 221 | .0484398 .4389747 0.11 0.912 -.8119348 .9088145
1 222 | -.2218391 .3996815 -0.56 0.579 -1.0052 .5615222
1 223 | -.7899478 .5153966 -1.53 0.125 -1.800107 .220211
1 224 | -1.262282 .5987538 -2.11 0.035 -2.435818 -.0887466
1 225 | .165899 .4758037 0.35 0.727 -.7666591 1.098457
1 226 | -.4402674 .425866 -1.03 0.301 -1.274949 .3944146
1 227 | -1.128988 .5408222 -2.09 0.037 -2.18898 -.0689961
1 228 | -1.409851 .5141167 -2.74 0.006 -2.417502 -.4022012
1 229 | -.3809774 .4470963 -0.85 0.394 -1.25727 .4953152
1 230 | -.4927229 .4538281 -1.09 0.278 -1.38221 .3967638
1 231 | .0124048 .4126992 0.03 0.976 -.7964708 .8212804
1 232 | -.282584 .4980087 -0.57 0.570 -1.258663 .6934952
1 233 | -.8704938 .42869 -2.03 0.042 -1.710711 -.0302768
1 234 | -.3797168 .4930169 -0.77 0.441 -1.346012 .5865786
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0219143 .3962778 -0.06 0.956 -.7986046 .7547759
1 212 | -.0234066 .3862428 -0.06 0.952 -.7804286 .7336154
1 213 | .401241 .3837273 1.05 0.296 -.3508506 1.153333
1 214 | .0112459 .3954425 0.03 0.977 -.7638072 .786299
1 215 | .3201806 .3405483 0.94 0.347 -.3472818 .9876431
1 216 | -.2243844 .4122051 -0.54 0.586 -1.032291 .5835227
1 217 | -.3189428 .3542578 -0.90 0.368 -1.013275 .3753897
1 218 | .1933265 .4097043 0.47 0.637 -.609679 .9963321
1 219 | .2183222 .3835156 0.57 0.569 -.5333546 .969999
1 220 | -1.486011 .4826268 -3.08 0.002 -2.431942 -.5400795
1 221 | -.2165387 .3921277 -0.55 0.581 -.9850948 .5520174
1 222 | .4314479 .3386115 1.27 0.203 -.2322184 1.095114
1 223 | .2299154 .3563642 0.65 0.519 -.4685455 .9283763
1 224 | -.2917213 .4277 -0.68 0.495 -1.129998 .5465554
1 225 | -.271675 .4485323 -0.61 0.545 -1.150782 .607432
1 226 | .1782805 .4294804 0.42 0.678 -.6634856 1.020047
1 227 | -.312534 .4677556 -0.67 0.504 -1.229318 .6042501
1 228 | .1410825 .3949147 0.36 0.721 -.6329362 .9151011
1 229 | .2348934 .3632182 0.65 0.518 -.4770012 .9467879
1 230 | -.3958508 .3506365 -1.13 0.259 -1.083086 .2913841
1 231 | -.231883 .3908996 -0.59 0.553 -.9980321 .5342661
1 232 | -.050043 .4528358 -0.11 0.912 -.9375849 .8374989
1 233 | -.2253656 .3986381 -0.57 0.572 -1.006682 .5559507
1 234 | -.1663135 .4572348 -0.36 0.716 -1.062477 .7298502
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | -.1932109 .2227382 -0.87 0.386 -.6297698 .2433479
1 212 | .446305 .2199779 2.03 0.042 .0151562 .8774538
1 213 | .1271588 .2070835 0.61 0.539 -.2787173 .5330349
1 214 | .4274584 .2021301 2.11 0.034 .0312906 .8236261
1 215 | .1861908 .2058859 0.90 0.366 -.2173382 .5897197
1 216 | .256165 .2290781 1.12 0.263 -.1928198 .7051497
1 217 | .0672428 .204267 0.33 0.742 -.3331131 .4675987
1 218 | -.0328362 .2158863 -0.15 0.879 -.4559656 .3902932
1 219 | .3352075 .2097486 1.60 0.110 -.0758922 .7463073
1 220 | .2579119 .2368547 1.09 0.276 -.2063147 .7221385
1 221 | .4509527 .2063269 2.19 0.029 .0465594 .8553459
1 222 | .1619872 .2108427 0.77 0.442 -.2512569 .5752312
1 223 | .3984933 .2123043 1.88 0.061 -.0176155 .8146021
1 224 | -.0004203 .2408708 -0.00 0.999 -.4725184 .4716778
1 225 | .0532724 .232737 0.23 0.819 -.4028838 .5094286
1 226 | .3026308 .2181342 1.39 0.165 -.1249043 .7301659
1 227 | .440363 .228338 1.93 0.054 -.0071713 .8878973
1 228 | .206379 .2547352 0.81 0.418 -.2928929 .7056508
1 229 | .3771039 .2009089 1.88 0.061 -.0166704 .7708782
1 230 | .1971456 .2161495 0.91 0.362 -.2264997 .6207909
1 231 | .3400201 .2118467 1.61 0.108 -.0751918 .7552321
1 232 | .224286 .2255074 0.99 0.320 -.2177004 .6662725
1 233 | .0208681 .2099394 0.10 0.921 -.3906056 .4323418
1 234 | -.0421269 .2229909 -0.19 0.850 -.479181 .3949271
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 113,775
Group variable: intersecti~d Number of groups = 4,551
R-sq: Obs per group:
within = 0.0022 min = 25
between = 0.0012 avg = 25.0
overall = 0.0009 max = 25
F(100,4550) = 2.88
corr(u_i, Xb) = -0.1286 Prob > F = 0.0000
(Std. Err. adjusted for 4,551 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
latenight_motoristinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0162709 .0083955 -1.94 0.053 -.0327302 .0001883
bike_route_tv | .0009495 .011791 0.08 0.936 -.0221666 .0240656
flag_street_improv | -.0172172 .0321757 -0.54 0.593 -.0802972 .0458627
flag_left_turn | -.0319322 .0300327 -1.06 0.288 -.0908109 .0269465
|
quarterly |
211 | -.0291115 .0145839 -2.00 0.046 -.0577029 -.0005201
212 | -.0504933 .0151264 -3.34 0.001 -.0801484 -.0208383
213 | -.0264708 .0147035 -1.80 0.072 -.0552968 .0023552
214 | -.0346391 .014524 -2.38 0.017 -.0631133 -.0061649
215 | -.0279997 .0153119 -1.83 0.068 -.0580186 .0020191
216 | -.0542606 .0142915 -3.80 0.000 -.0822789 -.0262423
217 | -.0171387 .0153841 -1.11 0.265 -.047299 .0130217
218 | -.0243044 .0150706 -1.61 0.107 -.05385 .0052412
219 | -.0359745 .01509 -2.38 0.017 -.0655583 -.0063907
220 | -.0715883 .0140661 -5.09 0.000 -.0991646 -.044012
221 | -.0325724 .0150706 -2.16 0.031 -.062118 -.0030268
222 | -.0246715 .0145958 -1.69 0.091 -.0532864 .0039434
223 | -.0448024 .0144312 -3.10 0.002 -.0730946 -.0165102
224 | -.0550033 .0137013 -4.01 0.000 -.0818645 -.028142
225 | -.0477861 .0148489 -3.22 0.001 -.0768971 -.018675
226 | -.0487862 .0147312 -3.31 0.001 -.0776665 -.0199058
227 | -.0646459 .0140218 -4.61 0.000 -.0921353 -.0371564
228 | -.0442544 .0147509 -3.00 0.003 -.0731733 -.0153355
229 | -.0182124 .014749 -1.23 0.217 -.0471275 .0107028
230 | -.0283925 .0146964 -1.93 0.053 -.0572045 .0004196
231 | -.0376677 .0143587 -2.62 0.009 -.0658178 -.0095177
232 | -.0440605 .0142079 -3.10 0.002 -.0719149 -.0162061
233 | -.0155545 .0152619 -1.02 0.308 -.0454753 .0143663
234 | -.009141 .0156017 -0.59 0.558 -.039728 .0214459
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | -.0842973 .079916 -1.05 0.292 -.2409714 .0723769
1 212 | -.1103376 .0729652 -1.51 0.131 -.2533848 .0327097
1 213 | -.1034784 .074835 -1.38 0.167 -.2501913 .0432346
1 214 | -.0490596 .0843645 -0.58 0.561 -.2144551 .1163358
1 215 | -.1079293 .0655005 -1.65 0.099 -.236342 .0204835
1 216 | -.1091771 .0730687 -1.49 0.135 -.2524272 .0340729
1 217 | -.1401478 .0731336 -1.92 0.055 -.2835251 .0032295
1 218 | -.1136966 .0719799 -1.58 0.114 -.2548122 .0274189
1 219 | .0714785 .0972432 0.74 0.462 -.1191654 .2621224
1 220 | -.0790647 .0775185 -1.02 0.308 -.2310386 .0729093
1 221 | -.0015262 .0914521 -0.02 0.987 -.1808167 .1777643
1 222 | -.0470527 .077347 -0.61 0.543 -.1986903 .1045849
1 223 | -.1101342 .0744296 -1.48 0.139 -.2560523 .0357839
1 224 | -.1249995 .0717927 -1.74 0.082 -.265748 .0157491
1 225 | .0040525 .0921648 0.04 0.965 -.1766353 .1847402
1 226 | -.076709 .0737295 -1.04 0.298 -.2212545 .0678366
1 227 | -.1196692 .0717253 -1.67 0.095 -.2602856 .0209472
1 228 | -.1401826 .0709897 -1.97 0.048 -.2793568 -.0010084
1 229 | -.0707679 .0825261 -0.86 0.391 -.2325592 .0910234
1 230 | -.0830735 .0776437 -1.07 0.285 -.2352928 .0691458
1 231 | -.0151676 .0821603 -0.18 0.854 -.1762418 .1459066
1 232 | -.059086 .0824636 -0.72 0.474 -.2207548 .1025827
1 233 | -.1192134 .0728133 -1.64 0.102 -.2619627 .023536
1 234 | -.069594 .0852541 -0.82 0.414 -.2367334 .0975454
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0264712 .0842638 -0.31 0.753 -.1916692 .1387268
1 212 | -.0355352 .0827472 -0.43 0.668 -.1977598 .1266894
1 213 | .0815671 .1029652 0.79 0.428 -.1202947 .2834288
1 214 | -.0170457 .089953 -0.19 0.850 -.1933973 .1593059
1 215 | .0565435 .0859674 0.66 0.511 -.1119943 .2250813
1 216 | -.0687208 .0798399 -0.86 0.389 -.2252457 .0878041
1 217 | -.0734366 .0720783 -1.02 0.308 -.2147451 .0678719
1 218 | .0230256 .0987981 0.23 0.816 -.1706666 .2167179
1 219 | .0332775 .0958519 0.35 0.728 -.1546387 .2211936
1 220 | -.1517778 .0679216 -2.23 0.025 -.2849371 -.0186185
1 221 | -.0584882 .0816522 -0.72 0.474 -.2185661 .1015897
1 222 | .0973017 .0913446 1.07 0.287 -.0817781 .2763814
1 223 | .0187858 .0835756 0.22 0.822 -.145063 .1826345
1 224 | -.0758622 .0775109 -0.98 0.328 -.2278212 .0760967
1 225 | -.0697919 .0814822 -0.86 0.392 -.2295366 .0899529
1 226 | .0027725 .0946434 0.03 0.977 -.1827746 .1883196
1 227 | -.0793398 .080049 -0.99 0.322 -.2362747 .0775952
1 228 | -.0054848 .0855765 -0.06 0.949 -.1732563 .1622867
1 229 | .0467175 .0928546 0.50 0.615 -.1353227 .2287577
1 230 | -.0842904 .0703573 -1.20 0.231 -.2222249 .0536441
1 231 | -.0630463 .0783987 -0.80 0.421 -.2167459 .0906532
1 232 | -.0383676 .0899727 -0.43 0.670 -.2147577 .1380226
1 233 | -.0576744 .0813744 -0.71 0.479 -.2172077 .1018589
1 234 | -.0449045 .0952012 -0.47 0.637 -.231545 .1417361
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | -.0104797 .0257798 -0.41 0.684 -.0610207 .0400612
1 212 | .0596125 .0288642 2.07 0.039 .0030246 .1162004
1 213 | .0197539 .0272194 0.73 0.468 -.0336094 .0731172
1 214 | .060909 .0287423 2.12 0.034 .0045601 .1172579
1 215 | .0274289 .0274008 1.00 0.317 -.02629 .0811478
1 216 | .036987 .027393 1.35 0.177 -.0167165 .0906905
1 217 | .0142462 .026734 0.53 0.594 -.0381654 .0666577
1 218 | .0025852 .0269766 0.10 0.924 -.0503021 .0554725
1 219 | .0464971 .0293363 1.58 0.113 -.0110164 .1040105
1 220 | .0373559 .0256801 1.45 0.146 -.0129896 .0877013
1 221 | .0654569 .0299909 2.18 0.029 .0066601 .1242536
1 222 | .023241 .0283708 0.82 0.413 -.0323796 .0788616
1 223 | .0540863 .0283069 1.91 0.056 -.0014091 .1095817
1 224 | .0145712 .0256859 0.57 0.571 -.0357856 .064928
1 225 | .0161901 .026809 0.60 0.546 -.0363686 .0687487
1 226 | .0417544 .0275273 1.52 0.129 -.0122125 .0957214
1 227 | .0552418 .0272565 2.03 0.043 .0018059 .1086778
1 228 | .0318309 .0301702 1.06 0.291 -.0273174 .0909792
1 229 | .0548853 .0294024 1.87 0.062 -.0027577 .1125282
1 230 | .0309386 .0279165 1.11 0.268 -.0237913 .0856685
1 231 | .0478304 .0282055 1.70 0.090 -.0074662 .1031269
1 232 | .0337317 .0277089 1.22 0.224 -.0205911 .0880546
1 233 | .0096369 .0267308 0.36 0.718 -.0427684 .0620422
1 234 | .0004919 .0280147 0.02 0.986 -.0544304 .0554143
|
_cons | .1541439 .0098457 15.66 0.000 .1348415 .1734462
------------------------------+----------------------------------------------------------------
sigma_u | .12461738
sigma_e | .53574143
rho | .05132895 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
note: 3066 groups (76650 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -153103.77
Iteration 1: log pseudolikelihood = -152220.13
Iteration 2: log pseudolikelihood = -152211.82
Iteration 3: log pseudolikelihood = -152211.81
Conditional fixed-effects Poisson regression Number of obs = 248,025
Group variable: intersection~d Number of groups = 9,921
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(100) = 747.92
Log pseudolikelihood = -152211.81 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_motoristinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0778098 .0310737 -2.50 0.012 -.1387131 -.0169065
bike_route_tv | .0399058 .044036 0.91 0.365 -.0464033 .1262148
flag_street_improv | -.0216178 .0757623 -0.29 0.775 -.1701093 .1268737
flag_left_turn | -.0525045 .1071439 -0.49 0.624 -.2625027 .1574938
|
quarterly |
211 | -.1130332 .0416034 -2.72 0.007 -.1945744 -.0314919
212 | -.2144279 .0432031 -4.96 0.000 -.2991043 -.1297514
213 | .0431818 .0390634 1.11 0.269 -.0333811 .1197446
214 | .0407452 .0398864 1.02 0.307 -.0374308 .1189212
215 | -.1214059 .0415681 -2.92 0.003 -.2028779 -.0399338
216 | -.2725429 .0431267 -6.32 0.000 -.3570697 -.1880161
217 | -.10147 .0419037 -2.42 0.015 -.1835997 -.0193404
218 | -.0920532 .0411735 -2.24 0.025 -.1727518 -.0113545
219 | -.1649563 .0431602 -3.82 0.000 -.2495487 -.0803639
220 | -.4111543 .0459328 -8.95 0.000 -.501181 -.3211277
221 | -.1249697 .0427704 -2.92 0.003 -.2087982 -.0411412
222 | -.1117316 .0407804 -2.74 0.006 -.1916596 -.0318036
223 | -.1460507 .0427019 -3.42 0.001 -.229745 -.0623565
224 | -.3511858 .0437409 -8.03 0.000 -.4369164 -.2654553
225 | -.2653482 .0450492 -5.89 0.000 -.353643 -.1770534
226 | -.4219817 .0459993 -9.17 0.000 -.5121386 -.3318248
227 | -.5055524 .0473623 -10.67 0.000 -.5983808 -.412724
228 | -.2429461 .0434403 -5.59 0.000 -.3280876 -.1578046
229 | -.0003647 .0433272 -0.01 0.993 -.0852844 .084555
230 | -.1183144 .0431287 -2.74 0.006 -.2028451 -.0337837
231 | -.1319333 .0454058 -2.91 0.004 -.220927 -.0429395
232 | -.2434863 .0436931 -5.57 0.000 -.3291232 -.1578493
233 | .0309478 .0424128 0.73 0.466 -.0521798 .1140753
234 | -.0457392 .0423526 -1.08 0.280 -.1287487 .0372704
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0171441 .1651622 0.10 0.917 -.3065678 .340856
1 212 | -.1974895 .1980335 -1.00 0.319 -.585628 .190649
1 213 | .0052969 .1640173 0.03 0.974 -.3161711 .3267649
1 214 | .0540984 .1665498 0.32 0.745 -.2723331 .3805299
1 215 | -.0083521 .1487555 -0.06 0.955 -.2999075 .2832033
1 216 | .1022435 .175744 0.58 0.561 -.2422084 .4466954
1 217 | -.3150607 .1941813 -1.62 0.105 -.695649 .0655277
1 218 | .1606349 .1718677 0.93 0.350 -.1762196 .4974893
1 219 | -.1845844 .1810152 -1.02 0.308 -.5393677 .1701988
1 220 | -.0690934 .1965904 -0.35 0.725 -.4544034 .3162167
1 221 | -.0258168 .194379 -0.13 0.894 -.4067926 .3551591
1 222 | -.0371541 .170772 -0.22 0.828 -.3718611 .2975528
1 223 | -.0332635 .1610529 -0.21 0.836 -.3489215 .2823944
1 224 | -.1758856 .1906907 -0.92 0.356 -.5496326 .1978613
1 225 | .0957499 .1690262 0.57 0.571 -.2355352 .4270351
1 226 | -.1450969 .1955526 -0.74 0.458 -.5283729 .2381792
1 227 | -.1876154 .1934789 -0.97 0.332 -.5668271 .1915962
1 228 | -.3203191 .1898727 -1.69 0.092 -.6924627 .0518246
1 229 | -.1797788 .1688239 -1.06 0.287 -.5106675 .1511099
1 230 | -.3306065 .1771612 -1.87 0.062 -.677836 .016623
1 231 | -.2628554 .179279 -1.47 0.143 -.6142357 .0885249
1 232 | -.0442719 .1830229 -0.24 0.809 -.4029902 .3144463
1 233 | -.2207858 .1664502 -1.33 0.185 -.5470221 .1054506
1 234 | -.2280258 .1657269 -1.38 0.169 -.5528445 .096793
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.1524084 .169445 -0.90 0.368 -.4845145 .1796977
1 212 | -.1479685 .158696 -0.93 0.351 -.4590069 .1630698
1 213 | -.074655 .1365925 -0.55 0.585 -.3423713 .1930614
1 214 | -.2640359 .1554194 -1.70 0.089 -.5686523 .0405804
1 215 | .0004496 .1648914 0.00 0.998 -.3227315 .3236307
1 216 | -.2329798 .1877097 -1.24 0.215 -.600884 .1349243
1 217 | -.2360592 .1632568 -1.45 0.148 -.5560368 .0839183
1 218 | -.100246 .1451546 -0.69 0.490 -.3847439 .1842518
1 219 | -.1358641 .1749877 -0.78 0.438 -.4788336 .2071054
1 220 | -.2053211 .1703956 -1.20 0.228 -.5392902 .128648
1 221 | -.031528 .1684236 -0.19 0.852 -.3616322 .2985763
1 222 | -.1361272 .1624661 -0.84 0.402 -.4545549 .1823005
1 223 | -.1600333 .165805 -0.97 0.334 -.485005 .1649385
1 224 | -.0213079 .1612714 -0.13 0.895 -.337394 .2947782
1 225 | -.129149 .1851574 -0.70 0.485 -.4920508 .2337529
1 226 | -.1452529 .1727881 -0.84 0.401 -.4839114 .1934056
1 227 | -.2074789 .1826987 -1.14 0.256 -.5655617 .1506039
1 228 | -.0873759 .1485257 -0.59 0.556 -.378481 .2037292
1 229 | -.1770863 .1588958 -1.11 0.265 -.4885163 .1343438
1 230 | -.1745963 .1687001 -1.03 0.301 -.5052424 .1560497
1 231 | -.2416653 .1582705 -1.53 0.127 -.5518697 .0685392
1 232 | -.2226998 .1690342 -1.32 0.188 -.5540007 .1086011
1 233 | -.1896336 .1556993 -1.22 0.223 -.4947986 .1155314
1 234 | -.1458202 .1617013 -0.90 0.367 -.462749 .1711086
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0579413 .0918191 0.63 0.528 -.1220208 .2379034
1 212 | .0265078 .0948344 0.28 0.780 -.1593642 .2123797
1 213 | .0751413 .0855575 0.88 0.380 -.0925483 .2428308
1 214 | .2109519 .1035239 2.04 0.042 .0080489 .413855
1 215 | .1894953 .0880156 2.15 0.031 .0169879 .3620027
1 216 | -.0133185 .0979188 -0.14 0.892 -.2052357 .1785988
1 217 | .1472846 .0889488 1.66 0.098 -.027052 .3216211
1 218 | .0955751 .0904702 1.06 0.291 -.0817434 .2728935
1 219 | .1462053 .094862 1.54 0.123 -.0397209 .3321315
1 220 | .2128359 .1039839 2.05 0.041 .0090312 .4166407
1 221 | .0620217 .0924449 0.67 0.502 -.1191669 .2432103
1 222 | .0904462 .0896304 1.01 0.313 -.0852261 .2661185
1 223 | .072616 .0887018 0.82 0.413 -.1012364 .2464683
1 224 | .1441295 .094227 1.53 0.126 -.0405519 .328811
1 225 | .0473814 .0936482 0.51 0.613 -.1361657 .2309284
1 226 | .0946424 .0994329 0.95 0.341 -.1002425 .2895273
1 227 | .0360066 .1061725 0.34 0.735 -.1720877 .2441009
1 228 | .035158 .0952238 0.37 0.712 -.1514773 .2217933
1 229 | -.05776 .0915178 -0.63 0.528 -.2371315 .1216115
1 230 | .0882985 .0905717 0.97 0.330 -.0892188 .2658158
1 231 | -.050895 .0926739 -0.55 0.583 -.2325325 .1307425
1 232 | .0096767 .0953607 0.10 0.919 -.1772268 .1965803
1 233 | .055654 .0899593 0.62 0.536 -.120663 .231971
1 234 | .0991241 .0899472 1.10 0.270 -.0771693 .2754174
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 248,025
Group variable: intersecti~d Number of groups = 9,921
R-sq: Obs per group:
within = 0.0033 min = 25
between = 0.0345 avg = 25.0
overall = 0.0000 max = 25
F(100,9920) = 7.42
corr(u_i, Xb) = -0.1618 Prob > F = 0.0000
(Std. Err. adjusted for 9,921 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
day_motoristinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0283578 .0109089 -2.60 0.009 -.0497415 -.0069741
bike_route_tv | .0127318 .0135678 0.94 0.348 -.0138639 .0393275
flag_street_improv | -.0171155 .033725 -0.51 0.612 -.0832233 .0489924
flag_left_turn | -.0235856 .0460911 -0.51 0.609 -.1139335 .0667623
|
quarterly |
211 | -.0403119 .0147156 -2.74 0.006 -.0691575 -.0114664
212 | -.0723546 .0145296 -4.98 0.000 -.1008355 -.0438736
213 | .0161971 .0149317 1.08 0.278 -.0130721 .0454664
214 | .0147066 .0152364 0.97 0.334 -.0151598 .0445731
215 | -.043052 .0146844 -2.93 0.003 -.0718365 -.0142676
216 | -.089532 .0141576 -6.32 0.000 -.1172838 -.0617802
217 | -.0364252 .0148951 -2.45 0.014 -.0656226 -.0072279
218 | -.0333038 .0147516 -2.26 0.024 -.0622199 -.0043877
219 | -.0571803 .0148156 -3.86 0.000 -.0862219 -.0281387
220 | -.1265718 .0140936 -8.98 0.000 -.1541981 -.0989456
221 | -.0442547 .0150052 -2.95 0.003 -.0736679 -.0148415
222 | -.0400317 .0144505 -2.77 0.006 -.0683575 -.0117058
223 | -.0512639 .0148528 -3.45 0.001 -.0803785 -.0221494
224 | -.1107371 .0139085 -7.96 0.000 -.1380005 -.0834736
225 | -.0873395 .0146648 -5.96 0.000 -.1160854 -.0585935
226 | -.1284505 .0139626 -9.20 0.000 -.15582 -.1010811
227 | -.1480106 .0138433 -10.69 0.000 -.1751464 -.1208749
228 | -.0805514 .0143833 -5.60 0.000 -.1087455 -.0523572
229 | -.000889 .0160377 -0.06 0.956 -.0323262 .0305481
230 | -.0420555 .0150623 -2.79 0.005 -.0715806 -.0125303
231 | -.0465902 .0156347 -2.98 0.003 -.0772375 -.0159429
232 | -.0806732 .0144875 -5.57 0.000 -.1090717 -.0522747
233 | .010664 .0158613 0.67 0.501 -.0204274 .0417553
234 | -.0173314 .0152414 -1.14 0.256 -.0472076 .0125447
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0099308 .0503549 0.20 0.844 -.088775 .1086366
1 212 | -.0358123 .0508676 -0.70 0.481 -.135523 .0638984
1 213 | -.0012616 .0538796 -0.02 0.981 -.1068765 .1043533
1 214 | .0144466 .0567296 0.25 0.799 -.0967549 .1256482
1 215 | .0026163 .0458267 0.06 0.954 -.0872132 .0924459
1 216 | .0379263 .0508092 0.75 0.455 -.0616701 .1375227
1 217 | -.0753281 .0510714 -1.47 0.140 -.1754384 .0247822
1 218 | .0550563 .05721 0.96 0.336 -.0570868 .1671995
1 219 | -.0394698 .0497277 -0.79 0.427 -.1369462 .0580066
1 220 | .0020657 .0504667 0.04 0.967 -.0968592 .1009906
1 221 | -.0015204 .0574309 -0.03 0.979 -.1140966 .1110557
1 222 | -.0060452 .0510495 -0.12 0.906 -.1061127 .0940222
1 223 | -.0032689 .0477024 -0.07 0.945 -.0967752 .0902375
1 224 | -.0225761 .0485264 -0.47 0.642 -.1176976 .0725454
1 225 | .0352655 .0495379 0.71 0.477 -.0618389 .1323699
1 226 | -.0101988 .0467036 -0.22 0.827 -.1017473 .0813497
1 227 | -.0110091 .0445838 -0.25 0.805 -.0984024 .0763842
1 228 | -.0560184 .046431 -1.21 0.228 -.1470326 .0349957
1 229 | -.0508168 .048506 -1.05 0.295 -.1458985 .0442649
1 230 | -.0734543 .0446705 -1.64 0.100 -.1610176 .0141091
1 231 | -.0550166 .0475122 -1.16 0.247 -.1481501 .0381169
1 232 | .0012869 .0497818 0.03 0.979 -.0962956 .0988694
1 233 | -.0658899 .0487436 -1.35 0.176 -.1614372 .0296573
1 234 | -.0593703 .0459863 -1.29 0.197 -.1495127 .0307721
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.211033 .160047 -1.32 0.187 -.5247577 .1026918
1 212 | -.2652695 .1469144 -1.81 0.071 -.5532517 .0227126
1 213 | -.0413598 .1429217 -0.29 0.772 -.3215154 .2387958
1 214 | -.2146321 .1534839 -1.40 0.162 -.5154918 .0862276
1 215 | -.0640634 .16918 -0.38 0.705 -.3956906 .2675638
1 216 | -.3472414 .1547817 -2.24 0.025 -.6506448 -.0438379
1 217 | -.2753882 .1501112 -1.83 0.067 -.5696366 .0188603
1 218 | -.1468689 .1436232 -1.02 0.307 -.4283995 .1346617
1 219 | -.2228448 .1603122 -1.39 0.165 -.5370894 .0913997
1 220 | -.3714677 .1426949 -2.60 0.009 -.6511787 -.0917567
1 221 | -.1119485 .1671038 -0.67 0.503 -.4395059 .2156088
1 222 | -.1966591 .1542068 -1.28 0.202 -.4989357 .1056175
1 223 | -.2356481 .1560564 -1.51 0.131 -.5415502 .0702541
1 224 | -.2296173 .1490479 -1.54 0.123 -.5217815 .062547
1 225 | -.2704848 .1638851 -1.65 0.099 -.5917329 .0507632
1 226 | -.3486803 .1403961 -2.48 0.013 -.6238851 -.0734755
1 227 | -.4160461 .1454939 -2.86 0.004 -.7012437 -.1308485
1 228 | -.2397887 .1372935 -1.75 0.081 -.5089118 .0293343
1 229 | -.1956312 .1509748 -1.30 0.195 -.4915724 .1003101
1 230 | -.2458385 .1562658 -1.57 0.116 -.5521511 .0604742
1 231 | -.3109697 .1424148 -2.18 0.029 -.5901316 -.0318078
1 232 | -.3361306 .1470461 -2.29 0.022 -.6243709 -.0478903
1 233 | -.1852085 .1526284 -1.21 0.225 -.4843911 .1139741
1 234 | -.1852317 .1569535 -1.18 0.238 -.4928924 .122429
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0255616 .0298219 0.86 0.391 -.0328954 .0840187
1 212 | .0210602 .0287743 0.73 0.464 -.0353433 .0774636
1 213 | .0243048 .0304488 0.80 0.425 -.0353811 .0839907
1 214 | .0784464 .039972 1.96 0.050 .0000932 .1567997
1 215 | .0673953 .0301121 2.24 0.025 .0083694 .1264211
1 216 | .0141148 .0284773 0.50 0.620 -.0417065 .0699361
1 217 | .0542827 .0299245 1.81 0.070 -.0043754 .1129409
1 218 | .0363625 .0302171 1.20 0.229 -.0228691 .0955942
1 219 | .0541178 .0309436 1.75 0.080 -.006538 .1147735
1 220 | .0739974 .0302696 2.44 0.015 .0146628 .133332
1 221 | .0266055 .0298867 0.89 0.373 -.0319784 .0851895
1 222 | .0360855 .0293225 1.23 0.218 -.0213925 .0935635
1 223 | .0319777 .0285838 1.12 0.263 -.0240523 .0880078
1 224 | .0553406 .0282527 1.96 0.050 -.0000404 .1107217
1 225 | .0290331 .0281177 1.03 0.302 -.0260832 .0841494
1 226 | .0451278 .0277037 1.63 0.103 -.009177 .0994326
1 227 | .035255 .0276766 1.27 0.203 -.0189967 .0895067
1 228 | .0255786 .0283833 0.90 0.368 -.0300585 .0812158
1 229 | -.0138092 .0298769 -0.46 0.644 -.072374 .0447555
1 230 | .0370442 .0292924 1.26 0.206 -.0203748 .0944632
1 231 | -.0004243 .0283612 -0.01 0.988 -.0560181 .0551695
1 232 | .0210709 .0282453 0.75 0.456 -.0342955 .0764374
1 233 | .0208631 .030953 0.67 0.500 -.0398111 .0815372
1 234 | .0382251 .0302904 1.26 0.207 -.0211503 .0976006
|
_cons | .3704442 .0093068 39.80 0.000 .352201 .3886874
------------------------------+----------------------------------------------------------------
sigma_u | .40937507
sigma_e | .86783294
rho | .18201798 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
qt_results_xt_motoristinjured.rtf
dir : seeout
[2]:
display (exp(-.0855797)-1)*100
-8.2020023
[22]:
xtsum flag_LPIS collision_count latenight_collision_count day_collision_count
Variable | Mean Std. Dev. Min Max | Observations
-----------------+--------------------------------------------+----------------
flag_L~S overall | .0604728 .2383611 0 1 | N = 324675
between | .141625 0 .92 | n = 12987
within | .1917285 -.8595272 1.020473 | T = 25
| |
collis~t overall | 1.668441 2.503171 0 77 | N = 324675
between | 1.995337 0 36.4 | n = 12987
within | 1.511552 -15.69156 63.38844 | T = 25
| |
lateni~t overall | .1630523 .4885803 0 15 | N = 324675
between | .2633606 0 6.28 | n = 12987
within | .4115302 -5.116948 9.323052 | T = 25
| |
day_co~t overall | 1.505388 2.26905 0 66 | N = 324675
between | 1.774159 0 31.48 | n = 12987
within | 1.414632 -13.49461 54.06539 | T = 25
[23]:
xtsum personsinjured latenight_personsinjured day_personsinjured
Variable | Mean Std. Dev. Min Max | Observations
-----------------+--------------------------------------------+----------------
pers~red overall | .4508878 1.084309 0 44 | N = 324675
between | .5667128 0 9.6 | n = 12987
within | .9244383 -8.149112 42.33089 | T = 25
| |
lateni.. overall | .056746 .3533105 0 16 | N = 324675
between | .107176 0 1.76 | n = 12987
within | .3366638 -1.703254 14.77675 | T = 25
| |
day_pe.. overall | .3941418 .9865242 0 44 | N = 324675
between | .4900696 0 8.12 | n = 12987
within | .8562006 -7.725858 42.39414 | T = 25
[24]:
xtsum pedestriansinjured latenight_pedestriansinjured day_pedestriansinjured
Variable | Mean Std. Dev. Min Max | Observations
-----------------+--------------------------------------------+----------------
pede~red overall | .1194364 .40359 0 29 | N = 324675
between | .1643444 0 2.4 | n = 12987
within | .3686161 -2.280564 26.71944 | T = 25
| |
lateni.. overall | .0107431 .1118874 0 4 | N = 324675
between | .0286096 0 .48 | n = 12987
within | .1081682 -.4692569 3.850743 | T = 25
| |
day_pe.. overall | .1086933 .3825176 0 29 | N = 324675
between | .1496578 0 2.32 | n = 12987
within | .3520283 -2.211307 26.78869 | T = 25
[25]:
xtsum cyclistinjured latenight_cyclistinjured day_cyclistinjured
Variable | Mean Std. Dev. Min Max | Observations
-----------------+--------------------------------------------+----------------
cycl~red overall | .0468222 .2305013 0 5 | N = 324675
between | .076199 0 .92 | n = 12987
within | .2175431 -.8731778 4.406822 | T = 25
| |
lateni.. overall | .0040656 .0646885 0 2 | N = 324675
between | .0147919 0 .28 | n = 12987
within | .0629748 -.2759344 1.924066 | T = 25
| |
day_cy.. overall | .0427566 .2194549 0 5 | N = 324675
between | .0698376 0 .76 | n = 12987
within | .208047 -.7172434 4.482757 | T = 25
[26]:
xtsum motoristinjured latenight_motoristinjured day_motoristinjured
Variable | Mean Std. Dev. Min Max | Observations
-----------------+--------------------------------------------+----------------
moto~red overall | .2859044 .9214595 0 43 | N = 324675
between | .4383734 0 9.04 | n = 12987
within | .8105125 -7.754096 41.3259 | T = 25
| |
lateni.. overall | .0420482 .3243277 0 16 | N = 324675
between | .0922307 0 1.72 | n = 12987
within | .3109382 -1.677952 14.80205 | T = 25
| |
day_mo.. overall | .2438562 .8337525 0 43 | N = 324675
between | .3757801 0 7.56 | n = 12987
within | .7442735 -7.316144 41.36386 | T = 25
Decay effect¶
[50]:
xtpoisson collision_count i.flag_LPIS_1yr i.flag_LPIS_2yrup $time_variant_var $time_var $time_trend, fe vce(robust)
note: 1645 groups (41125 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -407240.84
Iteration 1: log pseudolikelihood = -400757.53
Iteration 2: log pseudolikelihood = -400690.58
Iteration 3: log pseudolikelihood = -400690.58
Conditional fixed-effects Poisson regression Number of obs = 283,550
Group variable: intersection~d Number of groups = 11,342
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(101) = 5691.71
Log pseudolikelihood = -400690.58 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS_1yr | -.0537103 .0128657 -4.17 0.000 -.0789267 -.028494
1.flag_LPIS_2yrup | -.0469589 .0189065 -2.48 0.013 -.084015 -.0099029
bike_route_tv | .0229074 .0188585 1.21 0.224 -.0140547 .0598694
flag_street_improv | -.0159617 .0449844 -0.35 0.723 -.1041296 .0722061
flag_left_turn | -.1398624 .0369075 -3.79 0.000 -.2121998 -.067525
|
quarterly |
211 | -.0161772 .011437 -1.41 0.157 -.0385934 .006239
212 | -.089677 .0116558 -7.69 0.000 -.112522 -.066832
213 | .0551532 .0112315 4.91 0.000 .0331398 .0771665
214 | -.0060012 .0112924 -0.53 0.595 -.0281339 .0161314
215 | .0131765 .0115481 1.14 0.254 -.0094574 .0358103
216 | -.0854449 .012152 -7.03 0.000 -.1092623 -.0616274
217 | .017671 .0115903 1.52 0.127 -.0050455 .0403876
218 | -.0005455 .011582 -0.05 0.962 -.0232458 .0221548
219 | .007254 .0117695 0.62 0.538 -.0158138 .0303219
220 | -.0856666 .0123726 -6.92 0.000 -.1099164 -.0614168
221 | .0297013 .0120001 2.48 0.013 .0061814 .0532211
222 | .0511901 .0117796 4.35 0.000 .0281026 .0742777
223 | .0792057 .0117792 6.72 0.000 .0561189 .1022924
224 | -.0566911 .0120281 -4.71 0.000 -.0802658 -.0331165
225 | -.2850728 .0134525 -21.19 0.000 -.3114393 -.2587064
226 | -.5244293 .0147405 -35.58 0.000 -.5533201 -.4955385
227 | -.4991333 .0152922 -32.64 0.000 -.5291054 -.4691612
228 | -.2437919 .0148997 -16.36 0.000 -.2729949 -.214589
229 | -.0527174 .0146508 -3.60 0.000 -.0814325 -.0240023
230 | -.2241317 .015519 -14.44 0.000 -.2545484 -.193715
231 | -.1482621 .0156195 -9.49 0.000 -.1788758 -.1176484
232 | -.1896345 .0154433 -12.28 0.000 -.2199028 -.1593663
233 | -.0841612 .0150418 -5.60 0.000 -.1136425 -.0546799
234 | -.1823634 .015554 -11.72 0.000 -.2128487 -.1518781
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0737785 .0453748 1.63 0.104 -.0151544 .1627113
1 212 | .0386526 .0459627 0.84 0.400 -.0514327 .128738
1 213 | .1044928 .0441176 2.37 0.018 .018024 .1909617
1 214 | .0307487 .0453621 0.68 0.498 -.0581594 .1196569
1 215 | .007687 .046232 0.17 0.868 -.0829259 .0983
1 216 | .0603928 .0454592 1.33 0.184 -.0287056 .1494911
1 217 | .0075143 .0505703 0.15 0.882 -.0916018 .1066303
1 218 | .0169556 .043313 0.39 0.695 -.0679363 .1018474
1 219 | .0574598 .0438647 1.31 0.190 -.0285135 .143433
1 220 | .077141 .0485092 1.59 0.112 -.0179352 .1722173
1 221 | .0106957 .0456011 0.23 0.815 -.0786807 .1000722
1 222 | .0166134 .0463844 0.36 0.720 -.0742984 .1075252
1 223 | .0460282 .0438496 1.05 0.294 -.0399154 .1319719
1 224 | .0094756 .0456655 0.21 0.836 -.0800272 .0989784
1 225 | .0419476 .0542054 0.77 0.439 -.064293 .1481881
1 226 | -.080521 .0619554 -1.30 0.194 -.2019514 .0409093
1 227 | -.0805428 .0603446 -1.33 0.182 -.1988161 .0377305
1 228 | -.0514563 .0547894 -0.94 0.348 -.1588415 .0559289
1 229 | -.0056292 .0505541 -0.11 0.911 -.1047134 .093455
1 230 | -.0829614 .0535269 -1.55 0.121 -.1878723 .0219495
1 231 | -.0104434 .0536615 -0.19 0.846 -.115618 .0947311
1 232 | -.0307103 .0519477 -0.59 0.554 -.1325258 .0711053
1 233 | -.1000354 .0534374 -1.87 0.061 -.2047707 .0046999
1 234 | -.0946653 .0503959 -1.88 0.060 -.1934395 .0041089
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0353545 .0404113 -0.87 0.382 -.1145591 .0438502
1 212 | -.0638537 .0421727 -1.51 0.130 -.1465107 .0188033
1 213 | -.0965494 .0407844 -2.37 0.018 -.1764854 -.0166135
1 214 | -.0724804 .040985 -1.77 0.077 -.1528096 .0078488
1 215 | .010725 .0382883 0.28 0.779 -.0643186 .0857687
1 216 | -.1251723 .0462471 -2.71 0.007 -.215815 -.0345297
1 217 | -.1008636 .0455103 -2.22 0.027 -.1900621 -.0116651
1 218 | -.0644796 .0412801 -1.56 0.118 -.1453871 .0164278
1 219 | -.0622048 .0458153 -1.36 0.175 -.152001 .0275915
1 220 | -.1154205 .0485637 -2.38 0.017 -.2106037 -.0202374
1 221 | -.1166751 .0422469 -2.76 0.006 -.1994775 -.0338726
1 222 | -.0697447 .0431493 -1.62 0.106 -.1543158 .0148265
1 223 | -.1354724 .0417234 -3.25 0.001 -.2172488 -.0536961
1 224 | -.0975442 .0470602 -2.07 0.038 -.1897805 -.005308
1 225 | -.1240271 .0491318 -2.52 0.012 -.2203236 -.0277306
1 226 | -.1082199 .0586321 -1.85 0.065 -.2231367 .006697
1 227 | -.0991084 .0612925 -1.62 0.106 -.2192395 .0210228
1 228 | -.1228566 .0578025 -2.13 0.034 -.2361474 -.0095657
1 229 | -.2184036 .0562365 -3.88 0.000 -.3286252 -.108182
1 230 | -.1594255 .0589264 -2.71 0.007 -.2749191 -.043932
1 231 | -.1227459 .0621261 -1.98 0.048 -.2445109 -.0009809
1 232 | -.1613512 .0600526 -2.69 0.007 -.2790521 -.0436503
1 233 | -.1742638 .0558773 -3.12 0.002 -.2837813 -.0647464
1 234 | -.1331788 .0549629 -2.42 0.015 -.2409041 -.0254534
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0079583 .0217606 0.37 0.715 -.0346917 .0506083
1 212 | -.0016033 .0216254 -0.07 0.941 -.0439883 .0407817
1 213 | -.0356028 .0220521 -1.61 0.106 -.0788241 .0076186
1 214 | .0308651 .0216061 1.43 0.153 -.0114821 .0732123
1 215 | .0390323 .0217057 1.80 0.072 -.00351 .0815746
1 216 | .0365578 .022633 1.62 0.106 -.007802 .0809177
1 217 | .0199517 .0220152 0.91 0.365 -.0231972 .0631006
1 218 | .0068175 .0214301 0.32 0.750 -.0351848 .0488197
1 219 | .0148081 .0215807 0.69 0.493 -.0274893 .0571054
1 220 | -.0093508 .0232782 -0.40 0.688 -.0549752 .0362735
1 221 | .0438876 .0232374 1.89 0.059 -.0016568 .089432
1 222 | .0283519 .0232771 1.22 0.223 -.0172704 .0739743
1 223 | .0086699 .0241987 0.36 0.720 -.0387587 .0560985
1 224 | -.0214324 .0229846 -0.93 0.351 -.0664813 .0236165
1 225 | -.048011 .0257882 -1.86 0.063 -.0985549 .002533
1 226 | .015766 .0285198 0.55 0.580 -.0401317 .0716637
1 227 | .0362179 .0292007 1.24 0.215 -.0210143 .0934501
1 228 | -.0443616 .0280639 -1.58 0.114 -.0993659 .0106426
1 229 | -.0669461 .0268629 -2.49 0.013 -.1195964 -.0142958
1 230 | .0037913 .0281943 0.13 0.893 -.0514685 .059051
1 231 | -.08604 .0292437 -2.94 0.003 -.1433565 -.0287235
1 232 | -.101178 .029575 -3.42 0.001 -.159144 -.043212
1 233 | -.0733796 .0276223 -2.66 0.008 -.1275183 -.0192409
1 234 | -.1044422 .0277759 -3.76 0.000 -.158882 -.0500023
-----------------------------------------------------------------------------------------------
[52]:
test 1.flag_LPIS_1yr = 1.flag_LPIS_2yrup
( 1) [collision_count]1.flag_LPIS_1yr - [collision_count]1.flag_LPIS_2yrup = 0
chi2( 1) = 0.16
Prob > chi2 = 0.6926
[46]:
display (exp(-.0537103)-1)*100
-5.2293383
[47]:
display (exp(-.0469589)-1)*100
-4.5873389
[ ]:
xtreg collision_count i.flag_LPIS_1yr i.flag_LPIS_2yrup $time_variant_var $time_var $time_trend, fe vce(robust)
[53]:
xtpoisson personsinjured i.flag_LPIS_1yr i.flag_LPIS_2yrup $time_variant_var $time_var $time_trend, fe vce(robust)
note: 2032 groups (50800 obs) dropped because of all zero outcomes
Iteration 0: log pseudolikelihood = -227827.29
Iteration 1: log pseudolikelihood = -226299.56
Iteration 2: log pseudolikelihood = -226287.89
Iteration 3: log pseudolikelihood = -226287.89
Conditional fixed-effects Poisson regression Number of obs = 273,875
Group variable: intersection~d Number of groups = 10,955
Obs per group:
min = 25
avg = 25.0
max = 25
Wald chi2(101) = 1484.22
Log pseudolikelihood = -226287.89 Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
personsinjured | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS_1yr | -.0821486 .0259235 -3.17 0.002 -.1329578 -.0313395
1.flag_LPIS_2yrup | -.102828 .0293161 -3.51 0.000 -.1602864 -.0453696
bike_route_tv | .0166265 .0306735 0.54 0.588 -.0434924 .0767454
flag_street_improv | -.0260891 .0544575 -0.48 0.632 -.132824 .0806457
flag_left_turn | -.2000035 .0660171 -3.03 0.002 -.3293947 -.0706122
|
quarterly |
211 | -.062585 .0282405 -2.22 0.027 -.1179353 -.0072346
212 | -.1801586 .0294181 -6.12 0.000 -.237817 -.1225001
213 | .0237807 .0271054 0.88 0.380 -.0293448 .0769063
214 | .0212056 .0272875 0.78 0.437 -.0322769 .0746881
215 | -.0472836 .0277692 -1.70 0.089 -.1017103 .0071431
216 | -.2524503 .0298983 -8.44 0.000 -.3110499 -.1938507
217 | -.0640306 .0289834 -2.21 0.027 -.1208371 -.0072241
218 | -.0734696 .0284896 -2.58 0.010 -.1293083 -.017631
219 | -.0994014 .0287245 -3.46 0.001 -.1557005 -.0431024
220 | -.4107764 .0314234 -13.07 0.000 -.4723651 -.3491878
221 | -.1374148 .0296828 -4.63 0.000 -.195592 -.0792375
222 | -.0913445 .0282624 -3.23 0.001 -.1467378 -.0359513
223 | -.0826672 .0288128 -2.87 0.004 -.1391392 -.0261953
224 | -.2914078 .0298329 -9.77 0.000 -.3498792 -.2329364
225 | -.3097438 .0318302 -9.73 0.000 -.3721299 -.2473577
226 | -.4394656 .0324658 -13.54 0.000 -.5030974 -.3758339
227 | -.4830693 .0325717 -14.83 0.000 -.5469086 -.41923
228 | -.2828574 .0310818 -9.10 0.000 -.3437765 -.2219383
229 | -.0666334 .0305914 -2.18 0.029 -.1265916 -.0066753
230 | -.1659468 .0309142 -5.37 0.000 -.2265376 -.1053561
231 | -.1305755 .0315345 -4.14 0.000 -.192382 -.068769
232 | -.21974 .0306603 -7.17 0.000 -.2798331 -.1596469
233 | -.0478588 .0305655 -1.57 0.117 -.1077662 .0120485
234 | -.0908424 .0309107 -2.94 0.003 -.1514263 -.0302585
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0107394 .117939 0.09 0.927 -.2204169 .2418957
1 212 | -.140135 .1215266 -1.15 0.249 -.3783228 .0980527
1 213 | .0495242 .112072 0.44 0.659 -.1701329 .2691813
1 214 | .0431623 .1156745 0.37 0.709 -.1835556 .2698802
1 215 | -.0225908 .1031275 -0.22 0.827 -.2247171 .1795354
1 216 | .0232601 .1177444 0.20 0.843 -.2075148 .2540349
1 217 | -.2280515 .1169426 -1.95 0.051 -.4572548 .0011519
1 218 | .0412699 .1229332 0.34 0.737 -.1996749 .2822146
1 219 | .0448082 .1203813 0.37 0.710 -.1911349 .2807512
1 220 | -.0178201 .136747 -0.13 0.896 -.2858392 .250199
1 221 | .025073 .1280542 0.20 0.845 -.2259087 .2760547
1 222 | -.0278853 .1168793 -0.24 0.811 -.2569646 .201194
1 223 | -.0723531 .1101161 -0.66 0.511 -.2881767 .1434705
1 224 | -.0566954 .1248276 -0.45 0.650 -.301353 .1879622
1 225 | .0729725 .1291909 0.56 0.572 -.1802371 .326182
1 226 | -.2116067 .1386657 -1.53 0.127 -.4833866 .0601731
1 227 | -.216368 .1408383 -1.54 0.124 -.4924061 .05967
1 228 | -.1952404 .1263256 -1.55 0.122 -.4428339 .0523532
1 229 | -.0783637 .1196918 -0.65 0.513 -.3129552 .1562279
1 230 | -.1845874 .122756 -1.50 0.133 -.4251847 .0560098
1 231 | -.0549991 .1214975 -0.45 0.651 -.2931298 .1831316
1 232 | -.0037127 .1263832 -0.03 0.977 -.2514193 .2439939
1 233 | -.1450237 .1217584 -1.19 0.234 -.3836657 .0936183
1 234 | -.1104629 .119867 -0.92 0.357 -.3453979 .124472
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.0709543 .0965712 -0.73 0.463 -.2602303 .1183217
1 212 | -.0029848 .0964782 -0.03 0.975 -.1920787 .186109
1 213 | -.054526 .0890742 -0.61 0.540 -.2291082 .1200562
1 214 | -.0951566 .1008723 -0.94 0.346 -.2928627 .1025495
1 215 | .0455625 .0963007 0.47 0.636 -.1431834 .2343084
1 216 | -.1505179 .1139525 -1.32 0.187 -.3738606 .0728248
1 217 | -.2435371 .0978843 -2.49 0.013 -.4353869 -.0516874
1 218 | -.139691 .0945891 -1.48 0.140 -.3250822 .0457002
1 219 | -.0679967 .1032534 -0.66 0.510 -.2703697 .1343763
1 220 | -.1555755 .1017457 -1.53 0.126 -.3549933 .0438423
1 221 | -.1302178 .108442 -1.20 0.230 -.3427602 .0823246
1 222 | -.0668643 .0994797 -0.67 0.501 -.2618409 .1281122
1 223 | -.1098982 .1012892 -1.08 0.278 -.3084214 .0886249
1 224 | -.0973742 .0988752 -0.98 0.325 -.291166 .0964176
1 225 | -.1665017 .1058547 -1.57 0.116 -.373973 .0409696
1 226 | -.1742052 .124678 -1.40 0.162 -.4185697 .0701593
1 227 | -.1816991 .1151325 -1.58 0.115 -.4073547 .0439565
1 228 | -.1071043 .1041835 -1.03 0.304 -.3113002 .0970917
1 229 | -.1442982 .1068056 -1.35 0.177 -.3536334 .0650371
1 230 | -.1819836 .1043824 -1.74 0.081 -.3865693 .0226021
1 231 | -.2039894 .1090754 -1.87 0.061 -.4177732 .0097944
1 232 | -.2029418 .111524 -1.82 0.069 -.4215247 .0156412
1 233 | -.2205981 .1173818 -1.88 0.060 -.4506622 .009466
1 234 | -.1599549 .1113226 -1.44 0.151 -.3781432 .0582334
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .063037 .0534575 1.18 0.238 -.0417378 .1678119
1 212 | .0607911 .0569775 1.07 0.286 -.0508828 .172465
1 213 | .0285953 .0535814 0.53 0.594 -.0764223 .1336128
1 214 | .1210501 .0603667 2.01 0.045 .0027335 .2393666
1 215 | .0913843 .0541642 1.69 0.092 -.0147756 .1975442
1 216 | .0279249 .0585855 0.48 0.634 -.0869007 .1427504
1 217 | .0922437 .0543266 1.70 0.090 -.0142346 .1987219
1 218 | .041694 .0560283 0.74 0.457 -.0681194 .1515074
1 219 | .1390162 .0557348 2.49 0.013 .0297779 .2482545
1 220 | .0921956 .0646563 1.43 0.154 -.0345284 .2189197
1 221 | .0695907 .0576535 1.21 0.227 -.0434082 .1825895
1 222 | .0412614 .0562864 0.73 0.464 -.0690579 .1515808
1 223 | .0687236 .0550846 1.25 0.212 -.0392403 .1766875
1 224 | .0961488 .0578114 1.66 0.096 -.0171595 .209457
1 225 | .0014763 .0606623 0.02 0.981 -.1174195 .1203722
1 226 | .0594035 .0642267 0.92 0.355 -.0664784 .1852854
1 227 | .0725361 .0639888 1.13 0.257 -.0528797 .1979519
1 228 | .0046373 .0631262 0.07 0.941 -.1190877 .1283623
1 229 | .0255955 .0618204 0.41 0.679 -.0955702 .1467612
1 230 | .0553434 .0586948 0.94 0.346 -.0596964 .1703831
1 231 | -.018815 .0599063 -0.31 0.753 -.1362292 .0985992
1 232 | .0150673 .0608397 0.25 0.804 -.1041763 .1343109
1 233 | -.007786 .058705 -0.13 0.894 -.1228457 .1072737
1 234 | .0100098 .0602633 0.17 0.868 -.1081041 .1281237
-----------------------------------------------------------------------------------------------
[54]:
test 1.flag_LPIS_1yr = 1.flag_LPIS_2yrup
( 1) [personsinjured]1.flag_LPIS_1yr - [personsinjured]1.flag_LPIS_2yrup = 0
chi2( 1) = 0.41
Prob > chi2 = 0.5199
[55]:
display (exp(-.0821486)-1)*100
-7.8864932
[56]:
display (exp(-.102828)-1)*100
-9.7717847
[ ]:
xtreg personsinjured i.flag_LPIS_1yr i.flag_LPIS_2yrup $time_variant_var $time_var $time_trend, fe vce(robust)
Robustness check¶
I exclude 2016 in the first model
I only examine 2016 in the second model
[20]:
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend if quarterly <= tq(2015q4) | quarterly >= tq(2017q1), fe vce(robust)
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 272,727
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0200 min = 21
between = 0.0792 avg = 21.0
overall = 0.0015 max = 21
F(84,12986) = 21.07
corr(u_i, Xb) = -0.1649 Prob > F = 0.0000
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1860512 .0317901 -5.85 0.000 -.2483645 -.1237379
bike_route_tv | .0348319 .0421361 0.83 0.408 -.047761 .1174249
flag_street_improv | -.1875121 .1334107 -1.41 0.160 -.4490166 .0739924
flag_left_turn | -.8637542 .1777408 -4.86 0.000 -1.212152 -.5153561
|
quarterly |
211 | -.0272588 .0192282 -1.42 0.156 -.0649489 .0104314
212 | -.1438345 .0191116 -7.53 0.000 -.181296 -.1063731
213 | .0952231 .0194959 4.88 0.000 .0570083 .1334379
214 | -.0100947 .0190621 -0.53 0.596 -.0474592 .0272698
215 | .0223616 .0196888 1.14 0.256 -.0162314 .0609545
216 | -.1373589 .0199314 -6.89 0.000 -.1764274 -.0982904
217 | .0305665 .0197897 1.54 0.122 -.0082243 .0693572
218 | .0000733 .0196029 0.00 0.997 -.0383513 .038498
219 | .013119 .019998 0.66 0.512 -.02608 .0523181
220 | -.1358129 .0202956 -6.69 0.000 -.1755952 -.0960305
221 | .0522461 .0206102 2.53 0.011 .0118472 .0926451
222 | .0908934 .0203889 4.46 0.000 .0509282 .1308586
223 | .1409787 .0207104 6.81 0.000 .1003833 .1815741
228 | -.3484955 .0228527 -15.25 0.000 -.3932902 -.3037009
229 | -.0722946 .0239152 -3.02 0.003 -.119172 -.0254172
230 | -.3193445 .0234757 -13.60 0.000 -.3653602 -.2733288
231 | -.2118754 .0242398 -8.74 0.000 -.259389 -.1643618
232 | -.2680254 .0237519 -11.28 0.000 -.3145827 -.2214681
233 | -.1116765 .0240123 -4.65 0.000 -.1587441 -.064609
234 | -.2527479 .0238241 -10.61 0.000 -.2994467 -.2060492
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .1182662 .0717569 1.65 0.099 -.0223879 .2589203
1 212 | .0835474 .0682042 1.22 0.221 -.0501427 .2172376
1 213 | .1587069 .072676 2.18 0.029 .0162513 .3011624
1 214 | .0459516 .0704529 0.65 0.514 -.0921465 .1840497
1 215 | .0020683 .071969 0.03 0.977 -.1390015 .1431381
1 216 | .110743 .0687004 1.61 0.107 -.0239199 .245406
1 217 | .00298 .0784026 0.04 0.970 -.1507007 .1566607
1 218 | .0245121 .0667115 0.37 0.713 -.1062523 .1552765
1 219 | .0858275 .0694739 1.24 0.217 -.0503514 .2220065
1 220 | .1393515 .0734737 1.90 0.058 -.0046678 .2833708
1 221 | .001452 .0714747 0.02 0.984 -.1386488 .1415529
1 222 | .0061617 .0736836 0.08 0.933 -.1382689 .1505924
1 223 | .048203 .0719014 0.67 0.503 -.0927342 .1891403
1 228 | .03088 .0725757 0.43 0.670 -.111379 .1731389
1 229 | .0276932 .0735391 0.38 0.706 -.1164542 .1718407
1 230 | -.0129681 .0707523 -0.18 0.855 -.1516531 .1257169
1 231 | .0558448 .0736272 0.76 0.448 -.0884753 .2001649
1 232 | .0493333 .0708798 0.70 0.486 -.0896014 .1882681
1 233 | -.0750396 .07341 -1.02 0.307 -.218934 .0688548
1 234 | -.0258819 .0666564 -0.39 0.698 -.1565383 .1047744
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2767815 .2497188 -1.11 0.268 -.766267 .2127039
1 212 | -.7644246 .2548753 -3.00 0.003 -1.264018 -.2648315
1 213 | -.383692 .2501389 -1.53 0.125 -.8740009 .1066169
1 214 | -.4428846 .2498923 -1.77 0.076 -.9327102 .046941
1 215 | .1815863 .2452039 0.74 0.459 -.2990492 .6622219
1 216 | -1.046639 .2754272 -3.80 0.000 -1.586517 -.5067613
1 217 | -.5359691 .2768184 -1.94 0.053 -1.078574 .0066355
1 218 | -.401903 .2531484 -1.59 0.112 -.8981109 .094305
1 219 | -.3415039 .2845708 -1.20 0.230 -.8993044 .2162966
1 220 | -1.034498 .2949835 -3.51 0.000 -1.612709 -.4562874
1 221 | -.5498847 .2592778 -2.12 0.034 -1.058107 -.0416623
1 222 | -.1741961 .2704196 -0.64 0.519 -.7042582 .3558659
1 223 | -.4969507 .2582652 -1.92 0.054 -1.003188 .009287
1 228 | -1.658411 .327511 -5.06 0.000 -2.300381 -1.016442
1 229 | -1.521809 .3280397 -4.64 0.000 -2.164815 -.8788032
1 230 | -1.720131 .3341064 -5.15 0.000 -2.375028 -1.065233
1 231 | -1.383371 .3516043 -3.93 0.000 -2.072567 -.6941755
1 232 | -1.695064 .3394859 -4.99 0.000 -2.360507 -1.029622
1 233 | -1.429146 .3235483 -4.42 0.000 -2.063349 -.7949442
1 234 | -1.562805 .3170446 -4.93 0.000 -2.184259 -.9413513
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0112053 .0469976 0.24 0.812 -.0809168 .1033274
1 212 | -.0484146 .0450863 -1.07 0.283 -.1367903 .0399612
1 213 | -.0516448 .0486129 -1.06 0.288 -.1469332 .0436435
1 214 | .0693203 .0473512 1.46 0.143 -.023495 .1621355
1 215 | .1012724 .0482455 2.10 0.036 .0067042 .1958406
1 216 | .0359529 .0477797 0.75 0.452 -.0577024 .1296081
1 217 | .0578779 .0486317 1.19 0.234 -.0374473 .1532031
1 218 | .0170016 .0463758 0.37 0.714 -.0739017 .1079049
1 219 | .0413917 .0471582 0.88 0.380 -.0510453 .1338287
1 220 | -.0614197 .0485284 -1.27 0.206 -.1565425 .0337032
1 221 | .1248355 .0525562 2.38 0.018 .0218177 .2278533
1 222 | .1030686 .0533935 1.93 0.054 -.0015905 .2077276
1 223 | .0701802 .0561638 1.25 0.211 -.0399091 .1802695
1 228 | -.1813792 .0544599 -3.33 0.001 -.2881285 -.0746298
1 229 | -.1508895 .0554418 -2.72 0.007 -.2595635 -.0422156
1 230 | -.0844274 .0552283 -1.53 0.126 -.192683 .0238281
1 231 | -.2159984 .0574376 -3.76 0.000 -.3285846 -.1034122
1 232 | -.2514055 .0571158 -4.40 0.000 -.3633607 -.1394502
1 233 | -.1712594 .0552906 -3.10 0.002 -.2796371 -.0628816
1 234 | -.2531487 .0539498 -4.69 0.000 -.3588982 -.1473992
|
_cons | 1.839408 .015155 121.37 0.000 1.809702 1.869114
------------------------------+----------------------------------------------------------------
sigma_u | 2.1017894
sigma_e | 1.5437367
rho | .64957379 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
[22]:
xtreg collision_count i.flag_LPIS $time_variant_var $time_var $time_trend if year == 2016, fe vce(robust)
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 51,948
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0571 min = 4
between = 0.0547 avg = 4.0
overall = 0.0005 max = 4
F(16,12986) = 103.33
corr(u_i, Xb) = -0.1389 Prob > F = 0.0000
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
collision_count | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.1380986 .0670268 -2.06 0.039 -.269481 -.0067162
bike_route_tv | .0219725 .0787777 0.28 0.780 -.1324433 .1763884
flag_street_improv | .1152964 .2873665 0.40 0.688 -.4479841 .6785769
flag_left_turn | -.6490463 .2570878 -2.52 0.012 -1.152976 -.1451166
|
quarterly |
225 | -.3210769 .0182866 -17.56 0.000 -.3569213 -.2852324
226 | -.5869726 .0187261 -31.35 0.000 -.6236785 -.5502666
227 | -.5612587 .0190898 -29.40 0.000 -.5986776 -.5238398
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 225 | .1021429 .0664937 1.54 0.125 -.0281946 .2324804
1 226 | .0398626 .0689611 0.58 0.563 -.0953112 .1750365
1 227 | .0315377 .0676007 0.47 0.641 -.1009695 .1640449
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 225 | -.9228321 .2269222 -4.07 0.000 -1.367633 -.4780312
1 226 | -1.461868 .2577995 -5.67 0.000 -1.967193 -.9565429
1 227 | -1.365646 .2579215 -5.29 0.000 -1.87121 -.8600819
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 225 | -.1369561 .0461815 -2.97 0.003 -.2274786 -.0464335
1 226 | -.1221771 .0474501 -2.57 0.010 -.2151862 -.0291679
1 227 | -.08318 .0475611 -1.75 0.080 -.1764068 .0100468
|
_cons | 1.72126 .0217955 78.97 0.000 1.678538 1.763983
------------------------------+----------------------------------------------------------------
sigma_u | 1.8312081
sigma_e | 1.2665107
rho | .67643155 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
[ ]:
xtlogit flag_LPIS $time_variant_var $time_var $time_trend, fe
note: multiple positive outcomes within groups encountered.
note: 10,298 groups (257,450 obs) dropped because of all positive or
all negative outcomes.
note: 1.flag_school omitted because of no within-group variance.
note: 1.flag_priorityinters omitted because of no within-group variance.
note: 1.flag_seniors omitted because of no within-group variance.
Iteration 0: log likelihood = -17622.283
Iteration 1: log likelihood = -2579.5891 (not concave)
Iteration 2: log likelihood = -830.30598 (not concave)
Iteration 3: log likelihood = -543.86119 (not concave)
Iteration 4: log likelihood = -414.37961
Iteration 5: log likelihood = -414.37961 (not concave)
Iteration 6: log likelihood = -414.37961 (not concave)
Iteration 7: log likelihood = -414.37961 (not concave)
Iteration 8: log likelihood = -414.37961 (not concave)
Iteration 9: log likelihood = -414.37961 (not concave)
Iteration 10: log likelihood = -414.37961 (not concave)
Iteration 11: log likelihood = -414.37961 (not concave)
Iteration 12: log likelihood = -414.37961 (not concave)
Iteration 13: log likelihood = -414.37961 (not concave)
Iteration 14: log likelihood = -414.37961 (not concave)
Iteration 15: log likelihood = -414.37961 (not concave)
Iteration 16: log likelihood = -414.37961 (not concave)
Iteration 17: log likelihood = -414.37961 (not concave)
Iteration 18: log likelihood = -414.37961 (not concave)
Iteration 19: log likelihood = -414.37961 (not concave)
Iteration 20: log likelihood = -414.37961 (not concave)
Economic Analysis¶
[5]:
capture drop yhat
xtreg personsinjured i.flag_LPIS $time_variant_var $time_var $time_trend, fe vce(cluster intersection_id)
predict yhat, xb
note: 1.flag_school omitted because of collinearity
note: 1.flag_priorityinters omitted because of collinearity
note: 1.flag_seniors omitted because of collinearity
Fixed-effects (within) regression Number of obs = 324,675
Group variable: intersecti~d Number of groups = 12,987
R-sq: Obs per group:
within = 0.0061 min = 25
between = 0.0756 avg = 25.0
overall = 0.0014 max = 25
F(100,12986) = 14.58
corr(u_i, Xb) = -0.2259 Prob > F = 0.0000
(Std. Err. adjusted for 12,987 clusters in intersection_id)
-----------------------------------------------------------------------------------------------
| Robust
personsinjured | Coef. Std. Err. t P>|t| [95% Conf. Interval]
------------------------------+----------------------------------------------------------------
1.flag_LPIS | -.0685645 .0125281 -5.47 0.000 -.0931214 -.0440077
bike_route_tv | .0046819 .0154194 0.30 0.761 -.0255424 .0349062
flag_street_improv | -.0361458 .0374576 -0.96 0.335 -.1095681 .0372766
flag_left_turn | -.2121507 .0599979 -3.54 0.000 -.3297555 -.094546
|
quarterly |
211 | -.0302432 .0136316 -2.22 0.027 -.0569631 -.0035232
212 | -.0813472 .0134299 -6.06 0.000 -.1076717 -.0550227
213 | .0116899 .0136378 0.86 0.391 -.0150422 .0384219
214 | .0100474 .0137154 0.73 0.464 -.0168367 .0369315
215 | -.0228887 .0135224 -1.69 0.091 -.0493945 .0036172
216 | -.1102991 .0132038 -8.35 0.000 -.1361805 -.0844177
217 | -.030576 .0139398 -2.19 0.028 -.0579001 -.0032519
218 | -.0350335 .0136687 -2.56 0.010 -.0618261 -.0082409
219 | -.0469716 .0136165 -3.45 0.001 -.0736619 -.0202813
220 | -.1659869 .0129548 -12.81 0.000 -.1913802 -.1405936
221 | -.0632521 .0137856 -4.59 0.000 -.0902738 -.0362303
222 | -.042427 .0134319 -3.16 0.002 -.0687555 -.0160984
223 | -.0386025 .0137487 -2.81 0.005 -.0655519 -.0116531
224 | -.1237482 .0130015 -9.52 0.000 -.149233 -.0982634
225 | -.1296837 .0135185 -9.59 0.000 -.1561821 -.1031854
226 | -.1725527 .0130769 -13.20 0.000 -.1981854 -.1469201
227 | -.1860798 .012882 -14.44 0.000 -.2113303 -.1608292
228 | -.1187173 .0134609 -8.82 0.000 -.1451026 -.092332
229 | -.0300654 .0145033 -2.07 0.038 -.058494 -.0016369
230 | -.0731065 .0139293 -5.25 0.000 -.1004101 -.045803
231 | -.0584152 .0143592 -4.07 0.000 -.0865613 -.0302692
232 | -.0942115 .0135727 -6.94 0.000 -.1208161 -.067607
233 | -.0204062 .014449 -1.41 0.158 -.0487284 .007916
234 | -.0397496 .0142923 -2.78 0.005 -.0677645 -.0117346
|
1.flag_school | 0 (omitted)
|
flag_school#quarterly |
1 211 | .0078721 .0516604 0.15 0.879 -.0933898 .109134
1 212 | -.03705 .0476935 -0.78 0.437 -.1305362 .0564362
1 213 | .0203665 .051808 0.39 0.694 -.0811848 .1219177
1 214 | .0158411 .0541283 0.29 0.770 -.0902582 .1219405
1 215 | -.0077583 .0454556 -0.17 0.864 -.096858 .0813413
1 216 | .0250453 .0472627 0.53 0.596 -.0675966 .1176872
1 217 | -.0835573 .0468603 -1.78 0.075 -.1754104 .0082957
1 218 | .0215375 .0540501 0.40 0.690 -.0844087 .1274836
1 219 | .0237053 .0531426 0.45 0.656 -.080462 .1278726
1 220 | .0201768 .0504117 0.40 0.689 -.0786375 .1189912
1 221 | .0185187 .0543448 0.34 0.733 -.0880052 .1250425
1 222 | -.0048769 .0496601 -0.10 0.922 -.1022179 .0924641
1 223 | -.024075 .046442 -0.52 0.604 -.1151082 .0669582
1 224 | .0000263 .0486011 0.00 1.000 -.0952389 .0952916
1 225 | .045211 .05072 0.89 0.373 -.0542076 .1446295
1 226 | -.0242152 .046235 -0.52 0.600 -.1148425 .0664122
1 227 | -.0209284 .0457154 -0.46 0.647 -.1105373 .0686805
1 228 | -.0351852 .0459025 -0.77 0.443 -.1251608 .0547904
1 229 | -.0243047 .0495816 -0.49 0.624 -.1214919 .0728825
1 230 | -.0482014 .0465731 -1.03 0.301 -.1394916 .0430887
1 231 | -.0077977 .0492994 -0.16 0.874 -.1044317 .0888363
1 232 | .017914 .049975 0.36 0.720 -.0800444 .1158724
1 233 | -.0476149 .049227 -0.97 0.333 -.144107 .0488773
1 234 | -.0309501 .0475794 -0.65 0.515 -.1242128 .0623126
|
1.flag_priorityinters | 0 (omitted)
|
flag_priorityinters#quarterly |
1 211 | -.2113786 .1839598 -1.15 0.251 -.5719667 .1492096
1 212 | -.2560496 .1811858 -1.41 0.158 -.6112005 .0991012
1 213 | -.062791 .1763782 -0.36 0.722 -.4085181 .2829361
1 214 | -.1219451 .199334 -0.61 0.541 -.512669 .2687787
1 215 | .0475892 .1958919 0.24 0.808 -.3363876 .431566
1 216 | -.5702182 .1869774 -3.05 0.002 -.9367213 -.203715
1 217 | -.5122694 .1702274 -3.01 0.003 -.84594 -.1785987
1 218 | -.3526117 .1741935 -2.02 0.043 -.6940565 -.011167
1 219 | -.2359353 .1943851 -1.21 0.225 -.6169587 .1450881
1 220 | -.7141753 .1634873 -4.37 0.000 -1.034634 -.3937162
1 221 | -.4077064 .1936388 -2.11 0.035 -.7872669 -.0281459
1 222 | -.2515316 .1859506 -1.35 0.176 -.616022 .1129589
1 223 | -.317183 .1897207 -1.67 0.095 -.6890634 .0546973
1 224 | -.5197845 .1719959 -3.02 0.003 -.8569217 -.1826473
1 225 | -.6516648 .1706941 -3.82 0.000 -.9862504 -.3170793
1 226 | -.7725649 .1836278 -4.21 0.000 -1.132502 -.4126274
1 227 | -.8081543 .176771 -4.57 0.000 -1.154651 -.4616573
1 228 | -.5699489 .1746133 -3.26 0.001 -.9122167 -.2276812
1 229 | -.3891891 .1882309 -2.07 0.039 -.7581492 -.0202289
1 230 | -.5551344 .178881 -3.10 0.002 -.9057674 -.2045014
1 231 | -.5629676 .1819113 -3.09 0.002 -.9195405 -.2063947
1 232 | -.6403731 .1829521 -3.50 0.000 -.9989861 -.2817601
1 233 | -.5130059 .201176 -2.55 0.011 -.9073403 -.1186714
1 234 | -.463213 .195481 -2.37 0.018 -.8463845 -.0800415
|
1.flag_seniors | 0 (omitted)
|
flag_seniors#quarterly |
1 211 | .0324944 .0298689 1.09 0.277 -.0260531 .0910419
1 212 | .0208125 .0299688 0.69 0.487 -.0379308 .0795557
1 213 | .0191596 .0310134 0.62 0.537 -.0416312 .0799504
1 214 | .0778609 .0371756 2.09 0.036 .0049912 .1507307
1 215 | .0499001 .0310305 1.61 0.108 -.0109243 .1107244
1 216 | .0016339 .0292362 0.06 0.955 -.0556734 .0589412
1 217 | .0493299 .0303956 1.62 0.105 -.0102499 .1089098
1 218 | .0201895 .0308308 0.65 0.513 -.0402433 .0806223
1 219 | .0735278 .0316138 2.33 0.020 .0115602 .1354954
1 220 | .0190667 .0300667 0.63 0.526 -.0398684 .0780018
1 221 | .0306734 .0310074 0.99 0.323 -.0301056 .0914524
1 222 | .0191348 .0305697 0.63 0.531 -.0407864 .0790559
1 223 | .0349789 .0304323 1.15 0.250 -.0246729 .0946307
1 224 | .0304811 .029195 1.04 0.296 -.0267453 .0877075
1 225 | -.0114898 .0287531 -0.40 0.689 -.0678502 .0448705
1 226 | .0049785 .0289079 0.17 0.863 -.0516852 .0616423
1 227 | .0078014 .0287093 0.27 0.786 -.048473 .0640758
1 228 | -.0063269 .0303285 -0.21 0.835 -.0657751 .0531214
1 229 | .0168867 .0335085 0.50 0.614 -.0487948 .0825682
1 230 | .0257704 .0303448 0.85 0.396 -.03371 .0852507
1 231 | -.0083851 .03055 -0.27 0.784 -.0682676 .0514975
1 232 | .0042926 .0302655 0.14 0.887 -.0550322 .0636174
1 233 | -.0001258 .0313212 -0.00 0.997 -.0615199 .0612683
1 234 | .0063921 .0316185 0.20 0.840 -.0555848 .068369
|
_cons | .5262366 .0091127 57.75 0.000 .5083744 .5440988
------------------------------+----------------------------------------------------------------
sigma_u | .58502383
sigma_e | .94076066
rho | .27887027 (fraction of variance due to u_i)
-----------------------------------------------------------------------------------------------
The coefficient of -.0686 for flag_LPIS tells us that adding LPIs to the intersection reduces persons injured by 0.0686.
-.0685645 * 2,689 LPIs intersections * 25 quarters = -4,609 -.0685645 * 12,987 intersections * 25 quarters = -22,261
[42]:
margins, at(flag_LPIS = (0 1))
Predictive margins Number of obs = 324,675
Model VCE : Robust
Expression : Linear prediction, predict()
1._at : flag_LPIS = 0
2._at : flag_LPIS = 1
------------------------------------------------------------------------------
| Delta-method
| Margin Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
_at |
1 | .4550341 .0007576 600.62 0.000 .4535492 .456519
2 | .3864696 .0117705 32.83 0.000 .3633999 .4095393
------------------------------------------------------------------------------
[26]:
margins, at( flag_LPIS == 1)
Predictive margins Number of obs = 324,675
Model VCE : Robust
Expression : Linear prediction, predict()
at : flag_LPIS = 1
------------------------------------------------------------------------------
| Delta-method
| Margin Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
_cons | .3864696 .0117705 32.83 0.000 .3633999 .4095393
------------------------------------------------------------------------------
[27]:
margins, at( flag_LPIS == 0)
Predictive margins Number of obs = 324,675
Model VCE : Robust
Expression : Linear prediction, predict()
at : flag_LPIS = 0
------------------------------------------------------------------------------
| Delta-method
| Margin Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
_cons | .4550341 .0007576 600.62 0.000 .4535492 .456519
------------------------------------------------------------------------------
(0.455 - 0.386) * 12,987 interesections * 25 quarters = 22,402
22,402 persons injured was avoided if LPIs were implemented on all signalized intersections.
[7]:
tabstat yhat, statistics(sum) by(flag_LPIS)
Summary for variables: yhat
by categories of: flag_LPIS (Indicates the intersection at the time they became an LPIS intervention)
flag_LPIS | sum
----------+----------
0 | 139592.5
1 | 6799.509
----------+----------
Total | 146392
---------------------
[30]:
tabstat yhat, statistics(mean) by(flag_LPIS)
Summary for variables: yhat
by categories of: flag_LPIS (Indicates the intersection at the time they became an LPIS intervention)
flag_LPIS | mean
----------+----------
0 | .4576188
1 | .346313
----------+----------
Total | .4508878
---------------------