Research Impact: This multilevel random-effects meta-analysis and meta-regression estimated the population effect of post-primary school-based suicide prevention (PSSP) interventions on suicidal ideation (SI) and suicide attempts (SA) from cluster randomized trials of 33,155 adolescents attending 329 schools. Compared with controls, interventions were associated with 13% and 34% lower crude odds reductions for SI and SA, respectively; effects were similar for adjusted models. Number needed to treat estimates supported the potential of reducing the incidence of SA and SI in one adolescent by implementing PSSP in 1-2 classrooms. Moderator analyses were nonsignificant, but suggested larger effects for interventions >1wk, involving multiple stakeholders.
Walsh EH, McMahon J, Herring MP (2022). Research Review: The effect of school-based suicide prevention on suicidal ideation and suicide attempts and the role of intervention and contextual factors among adolescents: A meta-analysis and meta-regression. Journal of Child Psychology and Psychiatry, DOI: doi.org/10.1111/jcpp.13598. (IF:8.982; Q1 Psychiatry; R=11/156)