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 severity | At 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 injury | 1.9 (1.7 to 2.1) | 1.0 (0.9 to 1.1) | 1.4 (1.3 to 1.5) |
| Non-incapacitating | 1.8 (1.7 to 2.0) | 0.9 (0.8 to 1.1) | 1.3 (1.2 to 1.4) |
| Incapacitating | 1.8 (1.6 to 2.1) | 1.0 (0.9 to 1.2) | 1.3 (1.2 to 1.5) |
| Death | 4.8 (3.3 to 7.0) | 0.9 (0.6 to 1.3) | 1.6 (1.1 to 2.3) |