The Effectiveness of a School-Based Intervention for Adolescents in Reducing Disparities in the Negative Consequences of Substance Use Among Ethnic Groups.

Ethnic minority youth are disproportionately affected by substance use-related consequences, which may be best understood through a social ecological lens. Differences in psychosocial consequences between ethnic majority and minority groups are likely due to underlying social and environmental factors. The current longitudinal study examined the outcomes of a school-based motivational enhancement treatment intervention in reducing disparities in substance use consequences experienced by some ethnic minority groups with both between and within-subjects differences. Students were referred to the intervention through school personnel and participated in a four-session intervention targeting alcohol and drug use. Participants included 122 youth aged 13-19 years. Participants were grouped by ethnicity and likelihood of disparate negative consequences of substance use. African American/Hispanic/Multiethnic youth formed one group, and youth identifying as White or Asian formed a second group. We hypothesized that (1) there would be significant disparities in psychosocial, serious problem behavior, and school-based consequences of substance use between White/Asian students compared to African American/Hispanic/Multiethnic students at baseline; (2) physical dependence consequences would not be disparate at baseline; and (3) overall disparities would be reduced at post-treatment follow-up. Results indicated that African American/Hispanic/Multiethnic adolescents demonstrated statistically significant disparate consequences at baseline, except for physical dependency consequences. Lastly, significant reductions in disparities were evidenced between groups over time. Our findings highlight the efficacy of utilizing school-based substance use interventions in decreasing ethnic health disparities in substance use consequences.