Table 4

 Adjusted* risk ratios and 95% confidence intervals for the association between injury risk severity and contiguous occupant seat belt use by occupants’ seat belt use

Injury severityAt risk occupants’ seat belt use
Belted RR (95% CI)Unbelted RR (95% CI)Total RR (95% CI)
*Adjusted for at risk occupant’s sex, age, seating position, vehicle type, collision type, travel speed, and crash severity (and at risk occupant seat belt use for total).
Any injury1.9 (1.7 to 2.1)1.0 (0.9 to 1.1)1.4 (1.3 to 1.5)
    Non-incapacitating1.8 (1.7 to 2.0)0.9 (0.8 to 1.1)1.3 (1.2 to 1.4)
    Incapacitating1.8 (1.6 to 2.1)1.0 (0.9 to 1.2)1.3 (1.2 to 1.5)
    Death4.8 (3.3 to 7.0)0.9 (0.6 to 1.3)1.6 (1.1 to 2.3)