Table 1.
Patient characteristics, clinical variables and vehicular crash-related variables before and after BAC limit change
| Before BAC limit change | After BAC limit change | P value | |
| Gender, n (%) | 0.028 | ||
| Male | 2041 (60.12) | 2334 (57.6) | |
| Female | 1354 (39.88) | 1718 (42.4) | |
| Age (years) | 42.77 (18.34) | 44.45 (18.97) | <0.001* |
| DUI, n (%) | <0.001 | ||
| Yes | 373 (10.99) | 269 (6.64) | |
| No | 3022 (89.01) | 3783 (93.36) | |
| BAC (mg/dL) | 21.19 (62.49) | 12.31 (47.12) | <0.001* |
| Car, n (%) | 0.057 | ||
| Airbag | 73 (70.19) | 61 (57.55) | |
| No airbag | 31 (29.81) | 45 (42.45) | |
| Motorcycle, n (%) | <0.001 | ||
| Helmet | 2876 (87.39) | 3560 (90.22) | |
| No helmet | 415 (12.61) | 386 (9.78) | |
| ISS | 9 (9) | 9 (9) | 0.041* |
| Hospital stay (days) | 6 (7) | 7 (8) | 0.198* |
| Mortality, n (%) | 0.125 | ||
| Alive | 3357 (98.88) | 3990 (98.47) | |
| Death | 38 (1.12) | 62 (1.53) | |
| Seasons, n (%) | <0.001 | ||
| Spring | 605 (17.82) | 994 (24.53) | |
| Summer | 874 (25.74) | 1008 (24.88) | |
| Autumn | 970 (28.57) | 962 (23.74) | |
| Winter | 946 (27.86) | 1088 (26.85) | |
| Time, n (%) | <0.001 | ||
| 06:00–14:00 | 1351 (39.79) | 1822 (44.97) | |
| 14:00–22:00 | 1436 (42.30) | 1608 (39.68) | |
| 22:00–06:00 | 608 (17.91) | 622 (15.35) | |
| Weekdays, n (%) | 0.012 | ||
| Monday | 487 (14.34) | 639 (15.77) | |
| Tuesday | 553 (16.29) | 558 (13.77) | |
| Wednesday | 440 (12.96) | 587 (14.49) | |
| Thursday | 494 (14.55) | 590 (14.56) | |
| Friday | 480 (14.14) | 613 (15.13) | |
| Saturday | 504 (14.85) | 582 (14.36) | |
| Sunday | 437 (12.87) | 483 (11.92) |
*Mann-Whitney test.
BAC, blood alcohol concentration; DUI, driving under the influence; ISS, Injury Severity Score.