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Effects on alcohol and substance use of a school-based training intervention for adolescents with ADHD
Samantha M Margherio1, Sean Morse2, George J DuPaul2
1Department of Psychology, Virginia Polytechnic Institute and State University, United States of America.
Introduction:
Adolescents with attention-deficit/hyperactivity disorder (ADHD) may be at risk for early, escalating patterns of alcohol and substance use via academic, peer, and familial impairment. Existing school-based interventions for youth with ADHD effectively target these risk factors, yet their effects on alcohol and substance use have not been explored. We examined the immediate and long-term alcohol and substance use outcomes of an evidence-based school-based intervention for adolescents with ADHD.
Method:
A total of 186 (Mage = 15, 79% boys, 78% White, 11% Hispanic) adolescents with ADHD were randomized to either a school-based training intervention targeting academic and social skills or a treatment-as-usual control group. A subset of youth was followed into emerging adulthood (5 year follow-up; n = 73). Participants reported on their alcohol and substance use behaviors and problems at post-treatment, 6-month follow-up, and 5-year follow-up.
Results:
Two-part hurdle models controlling for prior use and demographics indicated treatment was associated with improvements in substance use outcomes among youth using any substances at 6-month follow-up (β = -0.45). However, among youth reporting any alcohol use at the 5-year follow-up, treatment was associated with worse alcohol use problems relative to the control condition (β = 0.27). Approximately 22% of intervention participants met criteria for risky drinking behavior compared to 5% of participants in the control group.
Conclusion:
We found mixed evidence that a school-based intervention associated with positive outcomes on academic, social, and emotional functioning for adolescents with ADHD also prevented adverse alcohol and substance use outcomes. These unexpected results serve as a call for extended follow-up periods to identify the durability of intervention benefits and potential for downstream iatrogenic effects. Additional research is needed to identify school-based intervention strategies that can effectively deter substance use risk among select populations.
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