Adjusted relative risks (95% confidence interval) of total and “at fault” crashes post-treatment: Poisson regression analysis
| All crashes | “At fault” crashes only | |
|---|---|---|
| Alcohol | 0.82 (0.62 to 1.08) | 0.95 (0.63 to 1.46) |
| Cannabis | 1.05 (0.81 to 1.36) | 1.00 (0.68 to1.49) |
| Cocaine | 0.88 (0.67 to 1.15) | 1.01 (0.68 to 1.50) |
| Age per year | 0.98 (0.96 to 0.99) | 0.95 (0.93 to 0.98) |
| Sex (male) | 1.50 (1.13 to 2.00) | 1.91 (1.18 to 3.11) |