Abstract

BackgroundDepression among young people is a global health problem due to its rising prevalence and negative physical and social outcomes. The prevalence of depression and the treatment gap among young people in Sub-Saharan Africa (SSA) is higher than global estimates. Most psychosocial interventions for adolescent and youth depression were developed in high-income countries and less is known about their effectiveness in SSA. Due to contextual differences, findings from High-Income Countries (HICs) are less applicable to SSA. Yet, no systematic review of psychosocial interventions for depression among young people in SSA has been conducted.MethodsA systematic literature search of four databases (Medline, Web of Science, PsycInfo, and Cochrane library) was conducted. Experimental studies published before May 2024 that evaluated the effect of psychosocial interventions on depressive symptoms among young people (aged 10–24 years) in SSA were included in the systematic review. Effect sizes (Hedge’s g (g)) indicating differences between intervention and control groups were calculated using a random effects model.ResultsTwenty-two eligible studies were identified for the systematic review, of which eighteen randomized control trials (RCTs) involving 2338 participants were included in the meta-analysis. The findings revealed that psychosocial interventions significantly reduced depressive symptoms (g = −1.55, 95% CI −2.48, −0.63), although heterogeneity was high (I2 = 98.8%). Subgroup analysis revealed that efficacy differed significantly by intervention type, with Cognitive Behavioural Therapy (9 studies) showing the strongest effect (g = −2.84, 95% CI −4.29; −1.38). While Wise Interventions (a form of positive psychology interventions; 2 studies) had a moderate effect (g = −0.46, 95% C.I −0.53, −0.39), Interpersonal Psychotherapy (2 studies; g = −0.08, 95% CI −1.05, 0.88) and Creative Psychological Interventions (3 studies; g = −0.29, 95% CI −1.38, 0.79) showed smaller, non-significant effects. Sensitivity analysis excluding studies at high risk of bias strengthened the effect size. Few studies assessed factors affecting intervention efficacy and showed mixed effects of age, gender, and adherence levels.ConclusionPsychosocial interventions, particularly CBT, significantly reduced depressive symptoms among young people in SSA. However, it is crucial to acknowledge the high heterogeneity which likely stems from variations in study populations and intervention delivery modalities. This highlights the need for further research to identify the specific intervention components and delivery methods that work best for distinct subpopulations. Future research should also explore how long intervention effects are maintained and factors affecting efficacy.

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