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Table 3 Results of the multivariable logistic regression analysis for various injured body regions and severe injuries among child motorcycle passengers

From: Effects of helmet nonuse and seating position on patterns and severity of injuries in child motorcycle passengers

Characteristic Head/face injury Chest/abdomen injury Extremity injury Severe injury
OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Child passenger
 Age (years)
   ≤ 3 2.88 (1.37, 6.06)   NA 0.21 (0.09, 0.50) 0.80 (0.24, 2.68)
  4~6 2.93 (1.50, 5.70)   NA 0.36 (0.15, 0.84) 2.76 (1.01, 7.55)
   ≥ 7 1.00    NA 1.00   1.00  
 Helmet type
  Unhelmeted 3.12 (1.02, 9.52) 1.47 (0.31, 7.00) 0.81 (0.20, 3.32) 3.02 (1.19, 7.62)
  Half-coverage 1.25 (0.43, 3.65) 1.38 (0.30, 6.47) 0.89 (0.22, 3.64) 1.00  
  Full-coverage 1.00   1.00   1.00    NA*
 Being seated in front of the operator 2.22 (1.25, 3.94) 1.29 (0.67, 2.49) 0.54 (0.25, 1.15) 1.73 (0.67, 4.43)
 Having multiple passengers 1.04 (0.61, 1.79) 0.89 (0.46, 1.72) 0.93 (0.49, 1.77) 1.20 (0.52, 2.79)
 Riding speed (mean ± SD, km/h) 1.02 (0.99, 1.04) 1.01 (0.98, 1.03) 1.01 (0.99, 1.04) 1.05 (1.01, 1.09)
Adult operator
 Educational level
  Elementary or below 2.04 (0.80, 5.23)   NA   NA   NA
  High school 2.14 (1.05, 4.35)   NA   NA   NA
  College and above 1.00    NA   NA   NA
  1. CI Confidence interval, NA Not applicable, OR odds ratio
  2. * No child passengers with a full-coverage helmet had a severe injury