ABSTRACT
OBJECTIVE: To evaluate the efficacy of ADHD medication adherence interventions and explore the pathways to effectiveness. METHODS: A systematic review was conducted using multiple databases to identify relevant randomized controlled trials (RCTs). Pooled effect sizes were calculated for medication adherence and ADHD symptom outcomes. Qualitative Comparative Analysis (QCA) was used to identify pathways to effectiveness. RESULTS: Six RCTs were included. The interventions significantly improved medication adherence (OR = 2.39, 95% CI [1.19, 4.79]) and ADHD symptoms (Hedges' g = -0.96, 95% CI [-1.38, -0.54]). Multi-regression analysis showed a positive relationship between medication adherence and ADHD symptom reduction. QCA revealed two paths for effectiveness: (1) Presence of ADHD drug education and absence of reminder and (2) Presence of tracking and absence of reminder. CONCLUSION: ADHD medication adherence interventions have a positive impact on both medication adherence and ADHD symptoms. Interventions should consider including ADHD drug education or tracking to maximize effectiveness.