Table 3 Risk of non-facial head injury among victims with head impact
From: Does a full-face helmet effectively protect against facial injuries?
| Cases | Controls | |||
|---|---|---|---|---|
| %w of victims with non-facial head injury (Nobs = 58) | %w of victims without head injury (Nobs = 325) |
Crude OR (95% CI) |
Adjusted OR (95% CI) | |
| Type of helmet | p = 0.408 | p = 0.706 | ||
| Not full-face | 25.1 | 19.3 | Reference | Reference |
| Full-face | 74.9 | 80.7 | 0.71 (0.32–1.60) | 0.84 (0.33–2.13) |
| Objet hit by the head | p = 0.161 | p = 0.262 | ||
| Ground/road | 57.4 | 75.6 | Reference | Reference |
| Vehicle | 28.4 | 14.4 | 2.59 (1.06–6.32) | 2.45 (0.95–6.30) |
| Fixed object | 3.9 | 2.8 | 1.84 (0.43–7.90) | 1.91 (0.44–8.27) |
| Unknown | 10.3 | 7.2 | 1.88 (0.72–4.96) | 1.71 (0.61–4.79) |
| Gender | p = 0.053 | p = 0.073 | ||
| Male | 97.3 | 91.1 | Reference | Reference |
| Female | 2.7 | 8.9 | 0.28 (0.08–1.02) | 0.30 (0.08–1.12) |
| Age | p = 0.779 | |||
| 14–24 | 42.8 | 49.2 | 0.77 (0.36–1.66) | |
| 25–49 | 46.9 | 41.5 | Reference | |
| 50+ | 10.3 | 9.3 | 0.98 (0.42–2.26) | |
| Alcohol consumption | p = 0.547 | |||
| No | 99.0 | 98.0 | Reference | |
| Yes | 1.0 | 2.0 | 0.50 (0.05–4.81) | |
| MTW category (cylinder capacity) | p = 0.452 | |||
| Moped (< 50 cm3) | 34.3 | 38.0 | Reference | |
| Light motorcycle (50–125 cm3) | 22.7 | 14.4 | 1.76 (0.62–4.99) | |
| Heavy motorcycle (> 125 cm3) | 43.0 | 47.6 | 1.00 (0.44–2.27) | |
| Type of accident | p = 0.495 | |||
| Only MTW | 27.4 | 33.2 | Reference | |
| Other | 72.6 | 66.8 | 1.32 (0.60–2.91) | |
| Driving speed of MTW* | Mean of driving speed (km/h) | p = 0.995 | ||
| 49.0 | 49.0 | 1.00 (0.98–1.01) | ||