Table 2.
First-Stage Mediation Results: MTO Treatment Regressed on Mediators by Domain.
| Boys |
Girls |
||||||
|---|---|---|---|---|---|---|---|
| Number of Mediators in Domain | χ2 | p | Directionality | χ2 | p | Directionality | |
| Lifetime Substance Use | 3 | 3.96 | 0.27 | 4.22 | 0.24 | ||
| Past 30 Day Alcohol Use | 2 | 4.75 | 0.09 | – | 6.01 | 0.05 | + |
| Past 30 Day Cigarette Use | 2 | 11.41 | 0.00 | – | 4.26 | 0.12 | |
| Past 30 Day Marijuana Use | 2 | 1.76 | 0.41 | 6.39 | 0.04 | + | |
| Past 30 Day Number of Substances Used | 1 | 7.56 | 0.01 | – | 8.26 | 0.00 | + |
| Social Connectedness | 6 | 12.99 | 0.04 | Mixed | 24.06 | 0.00 | + |
| Peer Deviance | 3 | 10.07 | 0.02 | Mixed | 0.28 | 0.96 | |
| Maternal Mental Health | 4 | 3.47 | 0.48 | 6.57 | 0.16 | ||
+ = Uniformly beneficial effects of treatment on all mediators in domain; – = Uniformly harmful effects of treatment on all mediators in domain; Mixed = Mix of both harmful and beneficial effects of treatment on mediators in domain
NOTES: Models adjusted for the following baseline covariates: youth age, black race; site; household head never married, teen parent, had a job, had a family member with a disability, was in school, education, moved more than 3 times in 5 years, lived in baseline neighborhood for 5+ years, chatted with neighbors; household size; youth had learning problems, needed special medicine/equipment, was in gifted/advanced class, was expelled, youth’s school called to discuss school work/behavior problems. Includes all sites.