Driver and crash characteristics
| | | | | | | |
Driver age | 16 | 4648 | 3963 | 1.27 | 1.20 to 1.34 | 1.37 | 1.29 to 1.45 |
| 17 | 7520 | 5061 | (ref) | – | (ref) | – |
| | | | | | | |
Driver sex | Male | 6171 | 5396 | 1.45 | 1.37 to 1.53 | 1.25 | 1.18 to 1.33 |
| Female | 5997 | 3628 | (ref) | – | (ref) | – |
| | | | | | | |
Driver alcohol use | Yes | 42 | 813 | 28.59 | 20.93 to 40.01 | 21.62 | 15.75 to 29.69 |
| No | 12126 | 8211 | (ref) | – | (ref) | – |
| | | | | | | |
Time of crash | 4 pm–5:59 pm | 2079 | 1310 | 0.96 | 0.88 to 1.04 | 0.93 | 0.86 to 1.01 |
| 6 pm–7:59 pm | 1632 | 1032 | 0.96 | 0.88 to 1.05 | 0.92 | 0.84 to 1.01 |
| 8 pm–9:59 pm | 1162 | 836 | 1.09 | 0.99 to 1.20 | 1.00 | 0.91 to 1.11 |
| 10 pm–11:59 pm | 770 | 820 | 1.62 | 1.45 to 1.80 | 1.30 | 1.16 to 1.46 |
| Midnight–1:59 pm | 279 | 529 | 2.88 | 2.47 to 3.35 | 1.86 | 1.58 to 2.19 |
| 2 am–3:59 am | 89 | 274 | 4.67 | 3.65 to 6.02 | 2.78 | 2.14 to 3.61 |
| 4 am–5:59 am | 25 | 182 | 11.05 | 7.23 to 17.55 | 9.29 | 6.02 to 14.34 |
| 6 am–3:59 pm | 6132 | 4041 | (ref) | – | (ref) | – |
|
Passenger characteristics
|
No of passengers
|
Driving alone | None | 5598 | 4449 | (ref) | – | – | – |
| | | | | | | |
Male teenage only | 1 | 1337 | 1226 | 1.15 | 1.06 to 1.26 | 1.03 | 0.94 to 1.12 |
| 2 | 411 | 389 | 1.19 | 1.03 to 1.38 | 1.00 | 0.86 to 1.17 |
| 3 or more | 183 | 218 | 1.49 | 1.22 to 1.84 | 1.27 | 1.03 to 1.57 |
| | | | | | | |
Female teenage only | 1 | 1533 | 969 | 0.80 | 0.73 to 0.87 | 0.85 | 0.77 to 0.93 |
| 2 | 388 | 235 | 0.76 | 0.64 to 0.90 | 0.79 | 0.67 to 0.94 |
| 3 or more | 166 | 91 | 0.69 | 0.53 to 0.90 | 0.69 | 0.53 to 0.90 |
| | | | | | | |
Mix of male and female teenage | 2 | 299 | 238 | 1.00 | 0.84 to 1.20 | 0.96 | 0.80 to 1.15 |
| 3 or more | 341 | 364 | 1.34 | 1.15 to 1.57 | 1.20 | 1.03 to 1.41 |
| | | | | | | |
Young adult (ages 20–29) | 1 | 256 | 164 | 0.81 | 0.66 to 0.99 | 0.71 | 0.57 to 0.88 |
| 2 or more | 29 | 13 | 0.56 | 0.27 to 1.12 | 0.31 | 0.14 to 0.67 |
| | | | | | | |
Mature adult (ages 30+) | 1 | 521 | 128 | 0.31 | 0.25 to 0.38 | 0.30 | 0.25 to 0.37 |
| 2 or more | 51 | 9 | 0.22 | 0.10 to 0.46 | 0.22 | 0.11 to 0.46 |
| | | | | | | |
Mix of young and mature adult | 2 or more | 24 | 5 | 0.26 | 0.08 to 0.70 | 0.25 | 0.09 to 0.67 |
| | | | | | | |
Children only | 1 | 209 | 108 | 0.65 | 0.51 to 0.83 | 0.71 | 0.56 to 0.91 |
| 2 or more | 59 | 36 | 0.77 | 0.49 to 1.18 | 0.90 | 0.59 to 1.38 |
| | | | | | | |
Mix of teen and adults | 2 | 190 | 97 | 0.64 | 0.50 to 0.83 | 0.57 | 0.44 to 0.74 |
| 3 or more | 151 | 101 | 0.84 | 0.65 to 1.09 | 0.57 | 0.43 to 0.76 |
| | | | | | | |
Mix of teen and children | 2 | 124 | 66 | 0.67 | 0.49 to 0.91 | 0.75 | 0.55 to 1.02 |
| 3 or more | 97 | 71 | 0.92 | 0.67 to 1.27 | 0.95 | 0.70 to 1.31 |
| | | | | | | |
Other mix | 2 or more | 201 | 47 | 0.28 | 0.16 to 0.46 | 0.31 | 0.22 to 0.43 |
| | | | | | | |
Total | – | 12168 | 9024 | – | – | – | – |