TABLE 4.
ORs (95% CIs) for Unrestrained Passengers Aged 0 to 14 Years Driven by Drivers Screened for Both Drugs and Alcohol Using Unadjusted and Adjusted Multilevel Logistic Regression for Children Involved in Fatal Crashes, FARS 2010 to 2013 (n = 4724)
| Variable | Unadjusted, Unrestrained | Multivariable Adjusted, Unrestrained |
|---|---|---|
| Passenger age (years) | ||
| 0–1 | Ref | Ref |
| 2–4 | 2.11 (1.50–2.98) | 2.45 (1.70–3.52) |
| 5–8 | 2.90 (2.07–4.06) | 3.94 (2.74–5.64) |
| 9–12 | 2.95 (2.09–4.14) | 4.35 (3.01–6.29) |
| 13–14 | 5.10 (3.59–7.25) | 6.83 (4.69–9.96) |
| Driver agea | 0.98 (0.97–0.99) | 0.98 (0.97–0.99) |
| Driver belt status | ||
| Belted | Ref | Ref |
| Unbelted | 6.06 (5.02–7.31) | 5.78 (4.74–7.06) |
| Driver alcohol/drug involvement | ||
| None | Ref | Ref |
| Drug only | 1.50 (1.21–1.86) | 1.25 (0.99–1.58) |
| Alcohol only | 2.34 (1.72–3.19) | 1.67 (1.20–2.32) |
| Both drug and alcohol | 3.52 (2.66–4.67) | 2.43 (1.79–3.30) |
Models are mixed effects using SAS GLIMMIX to control for clustering.
a
Driver age in this model is a continuous variable with a quadratic term.