TABLE 3—
Adjusted Prevalence Ratios for Reporting Often/Always Wearing Safety Belt as a Driver, by Type of State Safety Belt Law: United States, National Young Driver Survey, 2006
| Characteristic | All States, Adjusted Prevalence Ratio (95% CI) | Primary Law States, Adjusted Prevalence Ratio (95% CI) | Secondary Law States, Adjusted Prevalence Ratio (95% CI) |
| Law | |||
| Secondary | 0.88 (0.82, 0.96) | … | … |
| Primary (Ref) | 1.00 | … | … |
| Grade | |||
| 9th | 0.95 (0.87, 1.04) | 1.00 (0.89, 1.12) | 0.92 (0.80, 1.05) |
| 10th | 0.99 (0.93, 1.06) | 1.01 (0.91, 1.10) | 0.97 (0.89, 1.07) |
| 11th (Ref) | 1.00 | 1.00 | 1.00 |
| Sex | |||
| Male | 0.95 (0.91, 0.99) | 0.97 (0.92, 1.02) | 0.93 (0.86, 1.00) |
| Female (Ref) | 1.00 | 1.00 | 1.00 |
| Race/ethnicity | |||
| African American | 0.82 (0.74, 0.90) | 0.87 (0.80, 0.96) | 0.78 (0.65, 0.94) |
| Latino/Hispanic | 1.01 (0.92, 1.11) | 1.02 (0.95, 1.10) | 1.00 (0.81, 1.23) |
| Other | 1.01 (0.95, 1.08) | 1.08 (1.01, 1.14) | 0.94 (0.85, 1.04) |
| White (Ref) | 1.00 | 1.00 | 1.00 |
| Urbanicity | |||
| Rural/town | 0.93 (0.83, 1.04) | 0.96 (0.90, 1.03) | 0.90 (0.75, 1.07) |
| Urban/suburban (Ref) | 1.00 | 1.00 | 1.00 |
| Driver’s license | |||
| Unrestricted license | 0.83 (0.77, 0.90) | 0.92 (0.84, 1.02) | 0.78 (0.71, 0.87) |
| Provisional license | 0.91(0.85, 0.96) | 0.95 (0.89, 1.03) | 0.89 (0.82, 0.96) |
| Learner’s permit (Ref) | 1.00 | 1.00 | 1.00 |
| Academic grades | |||
| D’s and F’s | 0.65 (0.51, 0.83) | 0.79 (0.61, 1.02) | 0.52 (0.35, 0.76) |
| C’s | 0.88 (0.82, 0.94) | 0.91 (0.84, 0.98) | 0.85 (0.77, 0.94) |
| A’s and B’s (Ref) | 1.00 | 1.00 | 1.00 |
| Socioeconomic level school | |||
| Lower | 0.95 (0.85, 1.06) | 1.03 (0.95, 1.10) | 0.88 (0.73, 1.05) |
| Higher (Ref) | 1.00 | 1.00 | 1.00 |
| Vehicle type | |||
| Pickup truck | 0.79 (0.73, 0.86) | 0.79 (0.72, 0.87) | 0.81 (0.70, 0.93) |
| Minivan | 1.03 (0.98, 1.08) | 0.99 (0.89, 1.09) | 1.04 (0.97, 1.10) |
| SUV | 1.00 (0.95, 1.06) | 1.04 (0.99, 1.09) | 0.97 (0.89, 1.06) |
| Car (Ref) | 1.00 | 1.00 | 1.00 |
Note. CI = confidence interval; SUV = sport utility vehicle. For the total sample (unweighted frequencies), n = 3126; for the primary law states (unweighted frequencies), n = 1517; and for the secondary law states (unweighted frequencies), n = 1609. Surveyed states with primary enforcement safety belt laws: AL, CA, CT, GA, HI, IA, IL, IN, LA, MI, NC, NJ, NM, OR, SC, TN, and TX. Surveyed states with secondary enforcement safety belt laws: AZ, CO, FL, ID, MA, MN, MO, MS, MT, NE, NV, OH, PA, UT, VA, VT, and WI.