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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)