Table 4.
Multivariable logistic regression models quantifying the association between parental and peer perceptions regarding marijuana use and actual adolescent marijuana use with effect modification by presence of a confidant and relationship of adolescent with confidant.
| Exposure | Marijuana use (Yes vs. no) | ||
|---|---|---|---|
| N | aOR | 95% CI | |
| Main effects | |||
| Parental disapproval towards monthly marijuana use | |||
| Yes | 51355 | 0.13*** | (0.12, 0.15) |
| Peer disapproval towards monthly marijuana use | |||
| Yes | 51355 | 0.07*** | (0.06, 0.08) |
| Presence of a confidanta | 51355 | 0.54*** | (0.46, 0.64) |
| Parental confidantb | 48914 | 0.62*** | (0.55, 0.68) |
| Peer confidantc | 48914 | 2.13*** | (1.93, 2.34) |
| Interaction terms | |||
| Parental disapproval towards monthly marijuana use × Presence of a confidant*** | 51355 | ||
| Parental disapproval, no confidant | 0.27*** | (0.18, 0.40) | |
| No parental disapproval, any confidant | 1.23 | (0.88, 1.72) | |
| Parental disapproval, any confidant | 0.16*** | (0.11, 0.22) | |
| Parental disapproval towards monthly marijuana use × Peer confidant* | 48914 | ||
| Parental disapproval, non-peer confidant | 0.12*** | (0.10, 0.14) | |
| No parental disapproval, peer confidant | 1.45** | (1.10, 1.90) | |
| Parental disapproval, peer confidant | 0.25*** | (0.21, 0.31) | |
| Peer disapproval towards monthly marijuana use × Presence of a confidant*** | 51355 | ||
| Peer disapproval, no confidant | 0.19*** | (0.13, 0.28) | |
| No peer disapproval, any confidant | 0.94 | (0.76, 1.15) | |
| Peer disapproval, any confidant | 0.06*** | (0.05, 0.08) | |
| Peer disapproval towards monthly marijuana use × Parental confidant* | 48914 | ||
| Peer disapproval, non-parental confidant | 0.08*** | (0.07, 0.09) | |
| No peer disapproval, parental confidant | 0.83** | (0.73, 0.95) | |
| Peer disapproval, parental confidant | 0.05*** | (0.04, 0.06) | |
| Peer disapproval towards monthly marijuana use × Peer confidant*** | 48914 | ||
| Peer disapproval, non-peer confidant | 0.06*** | (0.05, 0.07) | |
| No peer disapproval, peer confidant | 1.39*** | (1.22, 1.57) | |
| Peer disapproval, peer confidant | 0.16*** | (0.14, 0.19) | |
p-value < 0.05,
p-value < 0.01,
p-value < 0.0001
aOR: adjusted odds ratio; CI: confidence interval; NS: not significant.
Comparison group: no confidant
Comparison group: non-parental confidant
Comparison group: non-peer confidant
Note: All models adjusted for age, gender, past-year major depressive episode, and survey year. Sample sizes for models investigating effect moderation by relationship with confidant vary due to exclusion of adolescents reporting no confidant. Cross-product terms noted where significant; non-significant findings included for completion.