TABLE 2—
Mean of Continuous Covariates as Function of DWI in the Past Month and RWI in the Past Year Among 11th-Grade Students: NEXT Generation Study, United States, 2010–2011
| DWI at Least 1 Day (n = 880) |
RWI at Least 1 Time (n = 2431) |
|||||
| Covariate | Yes, Mean(SE) | No, Mean(SE) | OR (95% CI) | Yes, Mean(SE) | No, Mean (SE) | OR (95% CI) |
| Age, y | 17.31 (0.08) | 17.33 (0.03) | 0.93 (0.49, 1.77) | 17.32 (0.05) | 17.30 (0.03) | 1.10 (0.83, 1.46) |
| Driving days in past 30 da | 25.68 (1.28) | 23.90 (0.48) | 1.03 (0.98, 1.09) | 19.70b (1.30) | 18.83b (0.91) | 1.01 (0.99, 1.02)b |
| Risky drivingc | 15.01 (0.74) | 6.90 (0.20) | 1.34*** (1.25, 1.44) | 11.33b (0.63) | 6.79b (0.21) | 1.16*** (1.10, 1.22)b |
| Secondary tasks while drivingd | 6.86 (0.17) | 5.12 (0.10) | 1.55*** (1.33, 1.79) | 6.32b (0.26) | 5.03b (0.10) | 1.30*** (1.12, 1.52)b |
Note. CI = confidence interval; DWI = driving while intoxicated; OR = odds ratio; RWI = riding with alcohol- or drug-impaired drivers.
a
Participants were excluded (n = 5) if they reported more than 30 days.
b
Only including those who had an independent driver’s license (not a learner’s permit; n = 844).
c
Number of incidents of risky driving in past 30 days.
d
Number of incidents of secondary task engagement while driving in the last 30 days.
***P < .001.