Mechanism | Season | Mean (95% CI) | Excess versus reference | p Value |
Suicide | Spring | 3.3 (1.1 to 5.5) | 1.7 | 0.273 |
Winter* | 1.6 (−0.6 to 3.7) | |||
Summer | 3.0 (0.8 to 5.2) | 1.4 | 0.358 | |
Fall | 2.2 (0.0 to 4.4) | 0.7 | 0.671 | |
MVC | Spring* | 19.1 (16.9 to 21.2) | ||
Winter | 22.2 (20.0 to 24.4) | 3.2 | 0.044 | |
Summer | 21.4 (19.2 to 23.6) | 2.3 | 0.138 | |
Fall | 23.2 (21.0 to 25.4) | 4.2 | 0.008 | |
MCC | Spring† | 5.7 (3.5 to 7.8) | 5.2 | 0.001 |
Winter* | 0.4 (−1.7 to 2.6) | |||
Summer† | 11.4 (9.3 to 13.6) | 11.0 | <0.001 | |
Fall† | 6.3 (4.2 to 8.5) | 5.9 | <0.001 | |
Falls | Spring | 18.2 (16.0 to 20.3) | 0.5 | 0.75 |
Winter† | 22.5 (20.3 to 24.7) | 4.8 | 0.002 | |
Summer* | 17.7 (15.5 to 19.8) | |||
Fall | 18.8 (16.7 to 21.0) | 1.2 | 0.458 | |
Falls>65 | Spring | 11.5 (9.3 to 13.7) | 0.1 | 0.972 |
Winter | 15.3 (13.2 to 17.5) | 3.9 | 0.014 | |
Summer* | 11.4 (9.3 to 13.6) | |||
Fall | 11.6 (9.4 to 13.8) | 0.2 | 0.915 |
*Represents reference.
†Represents significance.
MCC, motorcycle crashes; MVC, motor vehicle crashes.