Precision Optimization of Behavioral Activation for Major and Subthreshold Depression: A Meta-Analysis of Exploring...

This meta-analysis evaluated the efficacy of behavioral activation (BA) in adolescents with subthreshold depression (SD) or major depressive disorder (MDD), exploring dose-response relationships and moderating factors.

We searched PubMed, EMBASE, Web of Science, EBSCO, Scopus, and the Cochrane Library for randomized controlled trials (RCTs) through December 31, 2024. Risk of bias was assessed using RoB-2, and evidence quality with Grading of Recommendations Assessment, Development, and Evaluation (GRADE). Analyses were performed with R, using standardized mean difference (SMD) for continuous variables and meta-regression for dose-response relationships. Subgroup analyses included symptom severity, intervention setting, delivery format, and parental involvement. The primary outcome was the reduction in depressive symptoms (PROSPERO: CRD42023444273).

A total of 14 studies were included (11 RCTs meta-analyzed, comprising 572 participants). BA demonstrated a moderate effect size compared to treatment-as-usual (SMD = -0.42) and a large effect size compared to no-treatment controls (SMD = -0.87). BA was more effective for mild depressive symptoms (SMD = -0.93) than severe symptoms (SMD = -0.43), with significant efficacy in university settings (SMD = -0.94). Intervention without parental involvement exhibited significantly larger effects than those with parental participation (SMD = -0.94 vs -0.38; p < .0001), although this finding was likely confounded by age, symptom severity, and intervention setting. BA moderately improved both behavioral activation levels and functioning (SMD = 0.49).

Short-term, school-based BA is significantly beneficial for older adolescents with mild depressive symptoms. Findings provide practical guidance for optimizing BA implementation and highlight directions for future research, including the need for larger sample sizes, standardized follow-up assessments, and more representative samples.

This meta-analysis evaluated the effectiveness of behavioral activation (BA), a therapeutic approach focused on improving positive activities, in adolescents with subthreshold depression or major depressive disorder. Based on 14 included studies and 572 participants, BA was found to be more effective for subthreshold compared to major depression. These findings suggest a promising role for BA as an early intervention tool in adolescent depression.

Precision Optimization of Behavioral Activation for Major and Subthreshold Depression: A Meta-Analysis of Exploring Dose-response Relationships and Moderating Factors; https://www.crd.york.ac.uk/PROSPERO/view/CRD42023444273.

We worked to ensure sex and gender balance in the recruitment of human participants. We worked to ensure race, ethnic, and/or other types of diversity in the recruitment of human participants. We worked to ensure that the study questionnaires were prepared in an inclusive way. Diverse cell lines and/or genomic datasets were not available. We actively worked to promote sex and gender balance in our author group.