Table 3.
Wave- and person-level associations between social roles and driving after marijuana use and 5+ drinking among U.S. young adults ages 19–30 (no mediation)
| Drive after marijuana use | Drive after 5+ drinking | |||
|---|---|---|---|---|
| Variable | Bivariatea OR [95% CI] | Multivariable without mediatorsb AOR [95% CI] | Bivariate OR [95% CI] | Multivariable without mediators AOR [95% CI] |
| Level 1: Wave (within-person) | ||||
| Person centered measures (wave specific):c | ||||
| Live with parents (vs. other) | 1.54 [1.05, 2.25] | 1.41 [0.79, 2.53] | 1.49 [1.04, 2.12] | 1.35 [0.91, 2.02] |
| Married (vs. other) | 0.36 [0.19, 0.71] | 0.42 [0.21, 0.85] | 0.37 [0.24, 0.58] | 0.67 [0.41, 1.10] |
| Parent (vs. other) | 0.53 [0.32, 0.90] | 0.77 [0.37, 1.60] | 0.47 [0.32, 0.69] | 0.72 [0.46, 1.12] |
| Attendance (vs. not attending) | ||||
| Part time | 1.29 [0.75, 2.21] | 1.00 [0.47, 2.12] | 1.43 [0.86, 2.37] | 1.72 [0.99, 3.01] |
| Full time | 1.60 [1.12, 2.29] | 1.0† [0.54, 1.89] | 1.27 [0.94, 1.70] | 1.39 [0.88, 2.19] |
| Employment (vs. not employed) | ||||
| Part time | 1.34 [0.85, 2.11] | 0.56 [0.30, 1.04] | 1.52 [1.00, 2.29] | 1.18 [0.74, 1.90] |
| Full time | 0.82 [0.54, 1.25] | 0.51 [0.26, 1.00] | 1.43 [0.96, 2.15] | 1.65 [0.98, 2.77] |
| Level 2: Person (between-person) | ||||
| Grand-mean centered measures (average proportion of waves):d | ||||
| Live with parents (vs. other) | 0.98 [0.44, 2.17] | 1.79 [0.87, 3.67] | 0.92 [0.52, 1.64] | 1.13 [0.62, 2.03] |
| Married (vs. other) | 0.04 [0.02, 0.12] | 0.50 [0.21, 1.18] | 0.24 [0.12, 0.48] | 0.38 [0.17, 0.86] |
| Parent (vs. other) | 0.65 [0.29, 1.48] | 0.88 [0.43, 1.82] | 0.81 [0.47, 1.42] | 1.72 [0.91, 3.24] |
| Attendance (vs. not attending) | ||||
| Part time | 0.87 [0.23, 3.24] | 1.24 [0.36, 4.23] | 0.89 [0.35, 2.27] | 0.88 [0.31, 2.55] |
| Full time | 0.22 [0.09, 0.57] | 0.84 [0.37, 1.87] | 0.52 [0.26, 1.02] | 0.70 [0.32, 1.55] |
| Employment (vs. not employed) | ||||
| Part time | 0.36 [0.13, 1.01] | 0.59 [0.25, 1.40] | 1.47 [0.66, 3.25] | 1.31 [0.63, 2.71] |
| Full time | 0.80 [0.34, 1.91] | 0.88 [0.37, 2.07] | 3.04 [1.51, 6.11] | 1.48 [0.70, 3.13] |
Notes: Ns(unwtd.) = 7,037 waves from 1,873 individuals. All estimates obtained from weighted models. OR = bivariate odds ratio; AOR = multivariable odds ratio; CI = confidence interval. Bold font indicates associations significant at p = .05 or stronger.
Bivariate models included only one predictor per model (both wave- and person-level indicators for that predictor).
Multivariable models simultaneously included all wave- and person-level indicators for all five social roles; wave- and person-level indicators for average miles driven, past-30-day marijuana use frequency, and past-30-day alcohol use frequency; age and age2 at the wave level, and gender and race/ethnicity at the person level.
Person-centered as wave-specific value minus personal mean.
Grand–mean centered as person mean minus grand motive mean.