Univariable RR (95% CI) | Multivariable RR (95% CI)* | |
---|---|---|
Intersection angle | ||
Orthogonal (85<×<95) | 1 | 1 |
Non-orthogonal (0<×≤85 or 95≤×<175) | 1.36 (1.04 to 1.79) | 1.37 (1.05 to 1.80) |
Straight street (175≤×≤180) | 1.34 (1.03 to 1.73) | 1.31 (1.01 to 1.70) |
Missing | 1.22 (0.94 to 1.59) | 1.19 (0.92 to 1.55) |
Width of street at crash location† | ||
≤30 m | 1 | 1 |
>30 m | 1.01 (0.82 to 1.24) | 0.94 (0.76 to 1.16) |
Road surface condition | ||
Dry | 1 | 1 |
Wet/snow/muddy/slush | 0.80 (0.59 to 1.12) | 0.77 (0.55 to 1.07) |
Missing | 0.43 (0.18 to 1.01) | 0.38 (0.04 to 3.32) |
Road character | ||
Straight/level | 1 | 1 |
Straight/grade/ hillcrest curve | 1.14 (0.79 to 1.66) | 1.10 (0.76 to 1.58) |
Missing | 0.53 (0.23 to 1.12) | 1.22 (0.19 to 7.94) |
Time of the day | ||
Morning (6:00–10:00) | 1.03 (0.76 to 1.41) | 0.99 (0.73 to 1.35) |
Afternoon (10:00–15:00) | 1.08 (0.85 to 1.38) | 1.03 (0.80 to 1.32) |
Evening (15:00–21:00) | 1 | 1 |
Night (21:00–5:00) | 1.54 (1.19 to 1.99) | 1.54 (1.19 to 1.99) |
Vehicle type | ||
Car/van/pickup truck | 1 | 1 |
Truck and bus | 2.02 (1.37 to 2.96) | 2.11 (1.45 to 3.08) |
Other vehicles | 1.32 (1.06 to 1.63) | 1.31 (1.06 to 1.63) |
Age | ||
Children (6≤ age <18) | 0.94 (0.69 to 1.29) | 0.99 (0.73 to 1.37) |
Young adults (18≤ age <40) | 1 | 1 |
Middle age and older (40≤ age) | 0.94 (0.73 to 1.20) | 0.93 (0.73 to 1.19) |
Missing | 0.87 (0.64 to 1.18) | 0.94 (0.69 to 1.28) |
Sex | ||
Male | 1 | 1 |
Female | 1.09 (0.83 to 1.44) | 1.09 (0.83 to 1.44) |
AADT | 1.00 (0.99 to 1.01) | 1.00 (0.99 to 1.01) |
Posted speed limits | 1.00 (0.99 to 1.01) | 1.00 (0.99 to 1.01) |
Facilities | ||
Present | 1 | 1 |
Not present | 0.89 (0.73 to 1.10) | 0.91 (0.74 to 1.12) |
Statistically significant values are formatted in bold.
*All variables were included in the multivariable model in addition to annual average daily traffic (AADT) and posted speed limits.