RESUMEN
Introduction: Social disconnectedness and isolation are risk factors for poor mental health. Community-based friendship group interventions have been designed to increase an individual's social capital and consequently their mental wellbeing. Structured and unstructured friendship groups reflect two distinct approaches to friendship group interventions. Methods: This meta-analysis investigated whether structured or unstructured community friendship groups are more effective for mental health and social capital outcomes. A systematic search of quantitative studies was conducted across seven databases and study quality was assessed using the Effective Public Health Practice Project (EPHPP) tool. Eight studies (2 unstructured and 6 structured friendship groups) were included in the review, published between 2005 and 2020. Results: Structured friendship groups had a small significant effect on reducing participant depression symptoms. There was not enough available data to compare the effectiveness of structured and unstructured groups for mental health outcomes. There was substantial heterogeneity between studies to calculate pooled effect sizes for any social capital outcomes. Data synthesis indicated mixed reviews for social capital outcomes, likely due to the large heterogeneity and limited studies. Discussion: This meta-analysis provides limited support for positive mental health outcomes following structured community-based friendship group interventions. There is a need for additional research as a large research gap remains, particularly for unstructured friendship groups. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=260639, CRD42021260639.
RESUMEN
Introduction: Internalizing problems comprise a significant amount of the mental health difficulties experienced during childhood. Implementing prevention programs during early childhood may prevent internalizing problems. The present systematic review and meta-analysis aimed to evaluate the effect of both targeted and universal prevention programs in preventing internalizing problems for children aged 3- to 5-years and their parents. Methods: PsycINFO, Embase, and MEDLINE were systematically searched, and 17 randomized control trials, consisting of 3,381 children, met eligibility criteria. There were seven universal prevention programs, and 10 targeted prevention programs. Four prevention programs were delivered to children, 10 prevention programs were delivered to parents/caregivers, and three prevention programs were delivered to both parents and children. Results: Prevention programs led to significantly fewer internalizing problems at 6- and 7-month post-intervention (n = 7, p = 0.02, CI -0.69, 0.06) with a small-to-moderate effect size (g = -0.38), however, not at post-intervention or at 12-month follow up. Discussion: Overall, findings suggest that there may be value in ongoing development and evaluation of prevention programs for internalizing problems, as they improve social and emotional wellbeing in students and reduce internalizing difficulties within the 6- to 7-month timeframe following prevention programs. Systematic review registration: PROSPERO: CRD42021261323.