Table 2

Weighted regression of logged death rate/10 000 rear seat occupants in crashes by occupant age, belt configuration, curb weight, and claimed belt use

All casesClaimed belt users
Coefficient95% CICoefficient95% CI
Intercept 4.327 4.06 to 4.81 3.476 3.13 to 3.82
Occupant age
    5–14 0.097−0.09 to 0.18 0.028−0.20 to 0.25
    15–24 0.800 0.59 to 1.01 0.748 0.49 to 1.01
    25–34 0.793 0.47 to 1.11 0.538 0.17 to 0.91
    35–44 0.575 0.16 to 0.99 0.540 0.02 to 1.06
    ≥45 1.496 1.08 to 1.91 1.417 0.90 to 1.93
Curb weight
    2500–2999−0.693−0.50 to −0.88−0.168−0.41 to 0.07
    ≥3000−0.684−0.47 to −0.90−0.434−0.66 to −0.20
Equipped shoulder−1.057−0.71 to −1.41−0.378−0.04 to −0.72
Adjusted R2 0.86 0.64