Table 4.
Indirect effect estimates for tests of unique mediation through convenience drinking-and-driving expectancies
| Drinking-and-driving frequency |
Drinking-and-driving quantity |
|||||
| Variable | β | (SE) | [95% CI] | β | (SE) | [95% CI] |
| Urgency | ||||||
| Convenience expectancies | .09*** | (.02) | [.04, .13] | .07** | (.02) | [.03, .11] |
| Alcohol expectancies | .02 | (.02) | [−.03, .06] | .03 | (.03) | [−.02, .08] |
| Perceived danger | .05** | (.02) | [.01, .08] | .06** | (.02) | [.02, .10] |
| Normative beliefs | .07** | (.02) | [.03, .11] | .05** | (.02) | [.02, .08] |
| Negative consequences | .00 | (.01) | [−.01, .01] | .00 | (.00) | [−.01, .01] |
| Sum of indirect effects | .22*** | (.05) | [.12, .31] | .20*** | (.04) | [.12, .28] |
| Perseverance (lack) | ||||||
| Convenience expectancies | .08** | (.02) | [.03, .12] | .06** | (.02) | [.02, .10] |
| Alcohol expectancies | .00 | (.01) | [−.01, .02] | .01 | (.01) | [−.01, .02] |
| Perceived danger | .06** | (.02) | [.02, .09] | .07** | (.02) | [.02, .11] |
| Normative beliefs | .05** | (.02) | [.01, .09] | .04** | (.02) | [.01, .07] |
| Negative consequences | .03 | (.02) | [.00, .07] | .02 | (.02) | [−.02, .05] |
| Sum of indirect effects | .22*** | (.05) | [.13, .31] | .19*** | (.04) | [.11, .27] |
Notes: Parameter estimates were divided by SEs to calculate a z test of the significance of indirect effects. β = standardized parameter estimate; 95% CI = confidence intervals estimated by bias-corrected bootstrap with 5,000 resamplings.
**
p <.01;
***
p <.001.