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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)