Table 4 Model estimates for upper and lower extremity AIS2+ injuries (n = 502)
OR (95% CI)
Child BMI
    Underweight0.77 (0.20 to 2.86)
    Overweight2.43 (1.34 to 4.40)
    Obese2.42 (1.11 to 5.26)
    NormalReference
Crash severity
    Any intrusion29.02 (6.60 to 127.51)
    Tow away, no intrusion15.94 (3.50 to 72.68)
    No intrusion, driveableReference
Vehicle model year
    1990–19931.75 (0.64 to 4.83)
    1994–19971.40 (0.56 to 3.54)
    1998–20010.54 (0.22 to 1.33)
    2002–2007Reference
Rollover
    Yes2.89 (1.31 to 6.39)
    NoReference
Driver airbag deployment
    Yes4.19 (2.28 to 7.69)
    NoReference
Child seating position
    Front row2.65 (1.43 to 4.92)
    Back row, center0.97 (0.34 to 2.78)
    Back row, outboardReference
Child restraint type
    Lap only belt1.86 (0.76 to 4.59)
    Unrestrained/unknown2.80 (1.47 to 5.31)
    Lap/shoulder beltReference

  • Child age in years, child gender, passenger airbag deployment, and impact direction were removed from the model after model selection.

  • AIS, Abbreviated Injury Scale; BMI, body mass index.