From: Child and adolescent bicycling injuries involving motor vehicle collisions
Bicyclist Factors | Collision resulting in severe injuries (%) | Collision resulting in non-severe injuries (%) | Unadjusted odds ratio (95% CI) | Adjusted odds ratio a(95% CI) |
---|---|---|---|---|
n = 43 | n = 380 | |||
Bicyclist Action | ||||
Driving Properly | 9 (20.9) | 100 (28.2) | 1.00 | 1.00 |
Failure to Yield at Uncontrolled Intersection | 4 (9.3) | 28 (7.9) | 1.59 (0.45–5.54) | 1.35 (0.38–4.77) |
Traffic Control Device Violation | 3 (7.0) | 50 (15.2) | 0.67 (0.17–2.57) | 0.69 (0.18–2.67) |
Other (Improper turn/lane change etc.) | 7 (16.3) | 49 (13.8) | 1.59 (0.56–4.51) | 1.53 (0.53–4.42) |
Unknown | 20 (46.5) | 153 (36.1) | 1.45 (0.64–3.32) | 1.39 (0.60–3.21) |
Age (Years) | ||||
< 7 | 5 (11.6) | 27 (7.1) | 1.00 | 1.00 |
7 to 12 | 19 (44.2) | 139 (36.3) | 0.74 (0.25–2.14) | 0.83 (0.28–2.48) |
13–17 | 19 (44.2) | 214 (56.3) | 0.48 (0.17–1.39) | 0.53 (0.18–1.55) |
Sex | ||||
Female | 4 (9.3) | 75 (19.7) | 1.00 | 1.00 |
Male | 39 (90.7) | 305 (80.3) | 2.39 (0.83–6.92) | 2.35 (0.81–6.85) |
Helmet | ||||
Wearing Helmet | 14 (32.6) | 147 (38.7) | 1.00 | – |
Not Wearing | 25 (58.1) | 183 (48.2) | 1.43 (0.72–2.86) | – |
Unknown | 4 (9.3) | 50 (13.2) | 0.84 (0.26–2.67) | – |
Unsafe Speed | ||||
No | 22 (51.2) | 189 (49.7) | 1.00 | – |
Yes | 2 (4.7) | 20 (5.3) | 0.86 (0.19–3.92) | – |
Unknown | 19 (44.2) | 171 (45.0) | 0.95 (0.50–1.82) | – |