Collision type | Total I-M* | I-M (≥1 collision) | # of collisions | IRR(95% CI) (adjusted for covariates)† | p Value |
---|---|---|---|---|---|
All collisions | |||||
Pre-PCS | 42 904 | 935 | 1023 | 1 | |
Post-PCS | 29 619 | 1548 | 1737 | 1.26 (1.11 to 1.42) | <0.001 |
Summer | 36 406 | 1041 | 1142 | 1 | |
Winter | 36 117 | 1442 | 1618 | 1.19 (1.09 to 1.31) | <0.001 |
*Intersection-months.
†Covariates include: year, season and baseline pedestrian-motor vehicle rate.
IRR, incidence rate ratio.