Unadjusted, age adjusted, and multivariate adjusted odds ratios (OR) and 95% confidence intervals (95% CI) of sustaining a motorcycle injury associated with age, gender, and experience
| Unadjusted OR (95% CI) | Age adjusted OR (95% CI) | Multivariate adjusted OR (95% CI) | |
|---|---|---|---|
| Variables included were age, gender, years of regular motorcycle and other vehicle driving, socioeconomic status, posted speed limit, self reported speeding, familiarity with the motorcycle and the road, presence of a male or female pillion passenger, riding frequency in the last year, time of day and day of week riding, use of headlight, motorcycle cc rating, road conditions, licence status, self reported recent alcohol consumption. | |||
| Age (years) | |||
| 15–19 | 1 | 1 | |
| 20–24 | 0.72 (0.52 to 1.00) | 0.69 (0.43 to 1.11) | |
| 25+ | 0.45 (0.33 to 0.62) | 0.46 (0.26 to 0.81) | |
| Gender | |||
| Female | 1 | 1 | 1 |
| Male | 1.04 (0.66 to 1.64) | 1.03 (0.65 to 1.64) | 0.90 (0.51 to 1.60) |
| Years regular on-road motorcycle riding | |||
| <2 | 1 | 1 | 1 |
| 2–5 | 0.82 (0.60 to 1.12) | 0.97 (0.70 to 1.34) | 1.10 (0.73 to 1.68) |
| >5 | 0.65 (0.49 to 0.86) | 1.05 (0.74 to 1.51) | 1.57 (0.96 to 2.58) |
| Years regular car driving | |||
| <2 | 1 | 1 | 1 |
| 2–5 | 0.97 (0.68 to 1.38) | 1.01 (0.70 to 1.45) | 0.94 (0.61 to 1.46) |
| >5 | 0.67 (0.50 to 0.90) | 1.12 (0.78 to 1.62) | 0.88 (0.56 to 1.38) |
| On-road motorcycle riding in last year (days/week) | |||
| <1 | 1 | 1 | 1 |
| 1–2 | 0.63 (0.42 to 0.95) | 0.64 (0.42 to 0.98) | 0.81 (0.55 to 1.19) |
| ≥3 | 0.82 (0.59 to 1.14) | 0.81 (0.58 to 1.13) | 0.81 (0.52 to 1.27) |
| Familiarity with the specific motorcycle (km) | |||
| <1000 | 1 | 1 | 1 |
| 1000–9999 | 0.63 (0.46 to 0.85) | 0.62 (0.46 to 0.84) | 0.60 (0.41 to 0.88) |
| ≥10 000 | 0.49 (0.36 to 0.66) | 0.54 (0.40 to 0.74) | 0.52 (0.35 to 0.79) |
| Familiarity with the road | |||
| Never driven before | 1 | 1 | 1 |
| Driven before | 0.49 (0.27 to 0.87) | 0.55 (0.31 to 0.98) | 1.49 (0.69 to 3.22) |