Exponent for growth in crashes | 0.80 (0.69 to 0.91) | 0.76 (0.66 to 0.85) | 0.52 (0.38 to 0.66) |
RR per age category |
15–24 | 1 (reference) | | |
0–24 | | 1 (reference) | 1 (reference) |
25–64 | 1.29 (1.00 to 1.67) | 1.79 (1.49 to 2.16) | 3.43 (2.30 to 5.10) |
65 | 1.44 (1.09 to 1.91) | 2.74 (2.15 to 3.50) | 8.42 (5.40 to 13.11) |
RR per population density class |
Low (<263/km2) | 1 (reference) | 1 (reference) | 1 (reference) |
Medium (263–692/km2) | 1.05 (0.80 to 1.34) | 0.97 (0.79 to 1.19) | 0.86 (0.62 to 1.26) |
High (>692/km2) | 1.24 (0.94 to 1.64) | 0.86 (0.70 to 1.07) | 1.43 (0.91 to 2.25) |