Table 3.
Results for Primary Analyses on Driving-Related Outcomes by Condition
| Condition |
Statistics |
||||
|---|---|---|---|---|---|
| Analysis | Alcohol/Neutral (n = 12) | Alcohol/Trauma (n = 13) | Test Statistics | p | Effect size |
| Likelihood of Being Pulled Over by Police a | 54.78 ± 26.79 | 23.45 ± 23.08 | F = 9.27 | .008 | ηp2 = 0.38 |
| Likelihood of Accidentb | 51.92 ± 34.58 | 25.08 ± 24.01 | F = 4.35 | .049 | ηp2 = 0.17 |
| Willingness to Drive | 14.88 ± 25.21 | 51.36 ± 36.43 | t = 2.43 | .026 | d = 1.16 |
Note. Data presented as M ± SD. Likelihood of Being Pulled Over by Police, Likelihood of Accident, and Willingness to drive were evaluated on 0 to 100 scale. Thresholds for effect size interpretation (Cohen, 1988; Vacha-Haase & Thompson, 2004): Cohen’s d = .20 (small), .40 (medium), .80 (large); η2 = .01 (small), .06 (medium), .14 (large).
Covariates for Likelihood of Being Pulled Over by Police were negative urgency, sensation seeking, perceived dangerousness of driving after consuming alcohol. Five participants were excluded from primary analyses that included covariates due to missing data on negative urgency.
Covariates for Likelihood of Accident were perceived dangerousness of driving after consuming alcohol.