Systematic Review and Meta-Analysis: Adolescent Depression and Long-Term Psychosocial Outcomes

Experiencing depression in adolescence can disrupt important developmental processes, which can have longstanding effects on socioeconomic status and relationships. The objective of this article was to systematically review the evidence examining associations between adolescent depression and adult psychosocial outcomes. Five databases (MEDLINE, Embase, PsycINFO, CINAHL, and ERIC) were searched for articles published from 1980 through March 2017. Eligible articles were peer reviewed, published in English, had prospective cohort study designs, and contrasted adult psychosocial outcomes in those with versus without adolescent depression. Outcomes with sufficient data were pooled using random-effects meta-analyses, with summary measures reported as odds ratios (ORs). A protocol for this review was registered on PROSPERO (CRD42017059662). Of the 4,988 references screened for inclusion, 31 articles comprising 136 analyses were included for review. Twenty-four cohorts were represented. Seventy-seven analyses across 10 outcomes were meta-analyzed, with remaining analyses summarized narratively. Meta-analyses suggested that adolescent depression was associated with outcomes including, but not limited to, failure to complete secondary school (OR 1.76, 95% CI 1.29–2.39), unemployment (OR 1.66, 95% CI 1.29–2.14), and pregnancy/parenthood (OR 1.38, 95% CI 1.06–1.81). This review demonstrates that adolescent depression is associated with a myriad of adult psychosocial outcomes. Many are linked and can lead to the propagation of difficulties across the lifespan. These findings can have important implications for encouraging the provision of targeted mental health care early in development to improve life chances.