No drug n (%) | Drugs only n (%) | Alcohol only n (%) | Drug + Alcohol n (%)a | Total | Chi square | |
---|---|---|---|---|---|---|
36,115 (45.2) | 12,771 (16.0) | 18,986 (23.8) | 12,060 (15.1) | 79,932 | ||
Driver characteristics | ||||||
Driver age (years) | 8552.8 (<0.0001) | |||||
15–17 | 1764 (4.9) | 411 (3.2) | 273 (1.4) | 247 (2.1) | 2695 (3.4) | |
18–19 | 2600 (7.2) | 874 (6.8) | 922 (4.9) | 732 (6.1) | 5128 (6.4) | |
20–24 | 4287 (11.9) | 1925 (15.1) | 4106 (21.6) | 2811 (23.3) | 13,129 (16.4) | |
25–44 | 9763 (27.0) | 4954 (38.8) | 8815 (46.4) | 5673 (47.4) | 29,205 (36.5) | |
45–64 | 9806 (27.2) | 3406 (26.7) | 4039 (21.3) | 2382 (19.8) | 19,633 (24.6) | |
65+ | 7883 (21.8) | 1192 (9.3) | 823 (4.3) | 213 (1.8) | 10,111 (12.7) | |
Driver gender | 2446.7 (<0.0001) | |||||
Male | 23,160 (64.1) | 8614 (67.5) | 15,550 (81.9) | 9590 (79.5) | 56,914 (71.2) | |
Female | 12,951 (35.9) | 4154 (32.5) | 3430 (18.1) | 2465 (20.4) | 23,000 (28.8) | |
Injury severity | 1686.5 (<0.0001) | |||||
Not injured | 5192 (15.1) | 1288 (10.5) | 1246 (6.8) | 754 (6.5) | 8480 (11.0) | |
Non-incapacitating injury | 2808 (8.2) | 1080 (8.8) | 1336 (7.3) | 1067 (9.2) | 6291 (8.2) | |
Incapacitating injury | 1954 (5.7) | 1153 (9.4) | 1211 (6.6) | 1232 (10.6) | 5550 (7.2) | |
Fatal injury | 24,497 (71.1) | 8726 (71.3) | 14,625 (79.4) | 8606 (73.8) | 56,454 (73.5) | |
Driver restraint use | 7181.9 (<0.0001) | |||||
Belted | 24,212 (67.1) | 6539 (51.2) | 6765 (35.6) | 3976 (33.0) | 41,492 (51.9) | |
Not belted | 9616 (26.6) | 1059 (40.5) | 10,471 (55.2) | 6878 (57.0) | 32,138 (40.2) | |
Number of occupants | 319.7 (<0.0001) | |||||
One (Driver only) | 20,030 (55.5) | 7340 (57.5) | 10,605 (55.9) | 6535 (54.2) | 44,510 (55.7) | |
Two (Driver with one passenger) | 6004 (16.6) | 2329 (18.2) | 2969 (15.6) | 2324 (19.3) | 13,626 (17.1) | |
Three or more | 3726 (10.3) | 1370 (16.5) | 1762 (9.3) | 1423 (17.2) | 8281 (10.4) | |
Crash characteristics | ||||||
Violation charged | ||||||
Sign | 2262 (6.3) | 783 (6.1) | 1084 (5.7) | 817 (6.8) | 4946 (6.2) | 15.1 (0.0018) |
Turning | 1604 (4.4) | 541 (4.2) | 861 (4.5) | 442 (3.7) | 3448 (4.3) | 16.2 (0.0011) |
Passing | 2073 (5.7) | 1074 (8.4) | 1809 (9.5) | 1006 (8.3) | 5962 (7.5) | 302.7 (<0.0001) |
Reckless driving | 3826 (10.6) | 2292 (18.0) | 4376 (23.1) | 3041 (25.2) | 13,535 (16.9) | 2134.1 (<0.0001) |
Speed related | 1491 (4.1) | 673 (5.3) | 1767 (9.3) | 1142 (9.5) | 5073 (6.4) | 801.6 (<0.0001) |
Lane | 3308 (9.2) | 1324 (10.4) | 2522 (13.3) | 1488 (12.4) | 8642 (10.8) | 254.3 (<0.0001) |
Any moving violation | 12,010 (33.3) | 5393 (42.2) | 9720 (51.2) | 6182 (51.3) | 33,305 (41.7) | 2219.0 (<0.0001) |
Number of vehicles in crash | 6230.4 (<0.0001) | |||||
Single vehicle | 13,014 (36.0) | 5416 (42.4) | 12,554 (66.1) | 7916 (65.6) | 38,900 (48.7) | |
Two vehicles | 18,470 (51.2) | 5922 (46.4) | 5311 (28.0) | 3336 (27.6) | 33,039 (41.3) | |
Multiple vehicles | 4631 (12.8) | 1433 (11.2) | 1121 (5.9) | 808 (6.7) | 7993 (10.0) | |
Manner of collision | 6093.8 (<0.0001) | |||||
Not a collision of vehicle in transport | 14,647 (40.6) | 5978 (46.8) | 13,334 (70.2) | 8433 (69.9) | 42,392 (53.0) | |
Rollover | 2175 (6.0) | 910 (7.1) | 2177 (11.5) | 1262 (10.5) | 6524 (8.2) | |
Tree | 2266 (6.3) | 1139 (8.9) | 2406 (12.7) | 1629 (13.5) | 7440 (9.3) | |
Pedestrian | 2467 (6.8) | 562 (4.4) | 511 (2.7) | 311 (2.6) | 3851 (4.8) | |
Other | 7739 (21.4) | 3367 (26.4) | 8240 (43.4) | 5231 (43.37) | 24,577 (30.1) | |
Collision of vehicle in transport | 21,436 (59.4) | 6785 (53.1) | 5640 (29.7) | 3624 (30.1) | 37,485 (46.9) | |
Head-on | 2735 (7.6) | 865 (6.8) | 960 (5.1) | 524 (4.3) | 5084 (6.4) | |
Rear-end | 6346 (17.6) | 2699 (21.1) | 2147 (11.3) | 1393 (11.6) | 12,585 (15.7) | |
Angle | 10,754 (29.8) | 2691 (21.1) | 2133 (11.2) | 1358 (11.3) | 16,936 (21.2) | |
Sideswipe | 1417 (3.9) | 491 (3.8) | 366 (1.9) | 322 (2.7) | 2596 (3.3) | |
Other | 184 (0.5) | 39 (0.3) | 34 (0.2) | 27 (0.2) | 284 (0.4) | |
Time of the crash | 13,520.2 (<0.0001) | |||||
Day | 22,107 (61.2) | 7871 (61.6) | 3866 (20.4) | 2867 (23.8) | 36,711 (45.9) | |
Night | 12,124 (33.6) | 4556 (35.6) | 14,624 (77.0) | 8941 (74.1) | 40,245 (50.4) | |
Weekday/weekend | 4382.8 (<0.0001) | |||||
Weekday | 23,726 (65.7) | 8634 (67.7) | 8048 (42.4) | 5499 (45.6) | 45,907 (57.4) | |
Weekend | 11,803 (32.7) | 4034 (31.6) | 10,807 (56.9) | 6499 (53.9) | 33,143 (41.5) | |
Speed | 6359.1 (<0.0001) | |||||
No | 29,138 (80.7) | 9222 (72.2) | 10,293 (54.21) | 6052 (50.2) | 54,705 (68.4) | |
Yes | 6409 (27.3) | 3200 (25.1) | 8196 (43.2) | 5708 (47.3) | 23,513 (29.4) | |
Ejection | 3921.4 (<0.0001) | |||||
Ejected | 3956 (11.0) | 2105 (16.5) | 5669 (29.9) | 3564 (29.6) | 15,294 (19.1) | |
Not ejected | 32,092 (88.7) | 10,628 (83.2) | 13,250 (69.8) | 8443 (70.0) | 64,413 (80.6) |