OR and 95% CIs for severe injuries according to in/out of bicycle facility and motor vehicle side impact
| Included ‘unknown’ vehicle variable (included possible hit-and-runs) | Excluded ‘unknown’ vehicle variable (did not include possible hit-and-runs) | |||||||
|---|---|---|---|---|---|---|---|---|
| Number of severe injuries | Number of total injuries | Model 1A | Model 2A* | Number of severe injuries | Number of total injuries | Model 1B | Model 2B† | |
| In/Out | 191 | 290 | 150 | 225 | ||||
| No bicycle facility | 62 | 95 | 1 | 1 | 53 | 74 | 1 | 1 |
| Sharrows | 30 | 44 | 1.14 (0.53 to 2.44) | 1.18 (0.51 to 2.73) | 23 | 33 | 0.91 (0.37 to 2.24) | 0.95 (0.35 to 2.59) |
| Riding inside bike lane | 22 | 33 | 1.06 (0.46 to 2.46) | 1.20 (0.46 to 3.13) | 15 | 25 | 0.59 (0.23 to 1.53) | 0.57 (0.19 to 1.70) |
| Riding outside bike lane | 32 | 55 | 0.74 (0.37 to 1.46) | 0.59 (0.28 to 1.25) | 23 | 39 | 0.57 (0.25 to 1.28) | 0.40 (0.16 to 0.98)** |
| Riding inside cycle track | 14 | 22 | 0.93 (0.36 to 2.45) | 0.91 (0.31 to 2.68) | 11 | 19 | 0.54 (0.19 to 1.54) | 0.60 (0.19 to 1.93) |
| Riding outside cycle track | 31 | 41 | 1.65 (0.72 to 3.78) | 1.45 (0.60 to 3.54) | 25 | 35 | 0.99 (0.41 to 2.41) | 0.83 (0.31 to 2.18) |
| Motor vehicle side | 190 | 289 | 149 | 224 | ||||
| 2 (Reference) (front vehicle) | 35 | 52 | 1 | 1 | 24 | 36 | 1 | 1 |
| 1 (left front vehicle) | 23 | 30 | 1.60 (0.57 to 4.45) | 2.14 (0.66 to 6.96) | 20 | 23 | 3.33 (0.82 to 13.48) | 4.66 (0.93 to 23.45) |
| 3 (right front vehicle) | 21 | 31 | 1.02 (0.39 to 2.64) | 1.20 (0.41 to 3.52) | 14 | 22 | 0.88 (0.29 to 2.66) | 1.00 (0.28 to 3.64) |
| 4 (right/right front vehicle) | 17 | 28 | 0.75 (0.29 to 1.95) | 1.09 (0.34 to 3.53) | 12 | 20 | 0.75 (0.24 to 2.32) | 0.90 (0.21 to 3.78) |
| 5,11 (general door potential impact points) | 21 | 33 | 0.85 (0.34 to 2.12) | 0.92 (0.28 to 3.05) | 18 | 28 | 0.90 (0.32 to 2.54) | 0.96 (0.23 to 3.92) |
| 6 (right/right back vehicle) | 3 | 7 | 0.36 (0.07 to 1.81) | 0.52 (0.08 to 3.49) | 2 | 5 | 0.33 (0.05 to 2.27) | 0.58 (0.06 to 6.06) |
| 7, 8, 9 (vehicle back potential impact points) | 2 | 6 | 0.24 (0.04 to 1.46) | 0.14 (0.01 to 1.91) | 1 | 4 | 0.17 (0.02 to 1.78) | 0.08 (0.004 to 1.77) |
| 10 (left/left back vehicle) | 3 | 4 | 1.46 (0.14 to 15.07) | 1.26 (0.10 to 16.48) | 3 | 4 | 1.50 (0.14 to 16.00) | 1.07 (0.07 to 16.32) |
| 12 (left/left front vehicle) | 20 | 33 | 0.75 (0.30 to 1.85) | 0.94 (0.30 to 3.01) | 16 | 27 | 0.73 (0.26 to 2.05) | 0.81 (0.21 to 3.14) |
| 5a, 5b, 5c, 11a, 11b, 11c‡ | 45 | 65 | 1.09 (0.50 to 2.39) | 0.98 (0.24 to 4.04) | 39 | 55 | 1.22 (0.49 to 3.01) | 1.73 (0.32 to 9.32) |
*Model 2A was adjusted for age (years), gender, road surface condition (dry, wet, muddy, snow/ice, slush, flooded water, other), crash pattern, motor vehicle type (motorcycle, car/van/pick-up truck, bus, bicycle, pedestrian, other, unknown), light condition (daylight, dawn, dusk, dark-road lighted, dark-road unlighted) and intersection.
†Model 2B was adjusted for age (years), gender, road surface condition (dry, wet, muddy, snow/ice, slush, flooded water, other), crash pattern, motor vehicle type (motorcycle, car/van/pick-up truck, bus, bicycle, pedestrian, other), light condition (daylight, dawn, dusk, dark-road lighted, dark-road unlighted) and intersection.
‡5a=right mirror; 5b=right front opened door; 5c=right back opened door; 11a=left mirror; 11b=left front opened door; 11c=left back opened door.
**P<0.05. The bold is for level of significance 0.05.