Background Globally, suicide is the fourth highest cause of adolescent mortality (Suicide: https://www.who.int/news-room/fact-sheets/detail/suicide). The effects of post‐primary school‐based suicide prevention (PSSP) on adolescent suicidal thoughts and behaviours (STBs) have not been comprehensively synthesised. We aim to estimate the population effect for PSSP interventions on adolescent STBs and explore how intervention effects vary based on intervention and contextual moderators. Methods Searches of PsycINFO, Medline, Education Source, ERIC, Web of Science, and the Cochrane Central Register of Controlled Trials identified cluster randomised trials examining the effectiveness of PSSP on adolescent STBs. The Cochrane Risk of Bias tool assessed bias. Crude and adjusted back‐transformed odds ratios (ORs) were calculated. Multilevel random‐effects models accounted for dependencies of effects. Univariate meta‐regression explored variability of intervention and contextual moderators on pooled effects. Results There were 19 and 12 effects for suicidal ideation (SI) and suicide attempts (SA). Compared with controls, interventions were associated with 13% (OR = 0.87, 95%CI [0.78, 0.96]) and 34% (OR = 0.66, 95%CI [0.47, 0.91]) lower crude odds reductions for SI and SA, respectively. Effects were similar for adjusted SI (OR = 0.85, 95%CI [0.75, 0.95]) and SA (OR = 0.72, 95%CI [0.59, 0.87]) models. Within‐study (0.20–9.10%) and between‐study (0–51.20%) heterogeneity ranged for crude and adjusted SA models and SI heterogeneity was 0%. Moderator analyses did not vary SA effects (ps > .05). Conclusions This meta‐analysis contributes to the PSSP evidence‐base by demonstrating that PSSP targeting STBs as both primary intervention outcomes and with other health and well‐being outcomes reduced SI and SA among 33,155 adolescents attending 329 schools, compared to controls. The number needed to treat estimates suggests the potential of reducing the incidence of SA and SI in one adolescent by implementing PSSP in 1–2 classrooms, supporting PSSP as a clinically relevant suicide prevention strategy. Although moderator analyses were nonsignificant and contained a small number of trials, larger SA effect sizes support particular effectiveness for interventions of a duration of ≤1 week, involving multiple stakeholders and with a 12‐month follow‐up.

Background Globally, suicide is the fourth leading cause of adolescent mortality. Although post-primary school-based suicide prevention (PSSP) interventions are an evidence-based strategy for targeting adolescent suicidal thoughts and behaviors (STBs), PSSP effectiveness does not easily translate to school settings. Adolescents’ perspectives on PSSP are particularly important for (1) intervention effectiveness and implementation in both research and practice, (2) addressing PSSP evidence-practice gaps, and (3) enhancing meaningful adolescent involvement in PSSP, yet there is a gap in understanding adolescents’ experiences of engaging with PSSP. As such, this protocol outlines a meta-ethnography which will explore and synthesize adolescents’ perspectives on engaging with PSSP interventions, as participants/end-users, intervention advisors, facilitators, and co-designers and co-researchers. Methods The meta-ethnography protocol follows the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) guidelines. The protocol was guided by the seven-stage process for meta-ethnography proposed by Noblit and Hare. Searches of PsycINFO, MEDLINE, Web of Science, CINAHL, ERIC, Scopus, and study reference lists will identify peer-reviewed studies. Gray literature will be identified by searches in ProQuest, British Library EThOS, and DART-Europe E-theses Portal. The main reviewer will initially assess the eligibility of studies based on title and abstract, with full texts reviewed by at least two reviewers. Findings of the included studies will be synthesized in line with Noblit and Hare’s stages and evaluated using the Critical Appraisal Skills Program (CASP) checklist. Discussion To our knowledge, this is the first proposed meta-ethnography to explore and integrate the findings of qualitative studies exploring adolescents’ perspectives on engaging with PSSP interventions. Understanding adolescents’ experiences of engaging with PSSP will impact the field of PSSP in several ways by (1) enhancing research processes and intervention effectiveness and implementation, (2) informing decision-making and policymaking relevant to practice, (3) guiding meaningful adolescent involvement in PSSP, and (4) contributing to knowledge on the safety implications of engaging adolescents in PSSP. Finally, it is expected that the insights from this meta-ethnography will be widely applicable, given the growing demand for meaningful youth involvement in health-related fields. Systematic review registration PROSPERO CRD42022319424.

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Summary Anxiety, depression, and suicide are leading causes of disability and death among young people, globally. Schools are an ideal setting to target young people’s mental health, yet young people’s beliefs about and experiences with school mental health and suicide prevention are not well understood. This gap in knowledge contradicts both national and international youth mental health recommendations and the United Nations Convention on the Rights of the Child, which collectively advocate for understanding young people’s perspectives on matters concerning them, including school mental health. Therefore, the Mental Health of Youth Story (MYSTORY) study explored young people’s perspectives on school mental health and suicide prevention using a participatory-based approach incorporating photovoice. MYSTORY consisted of a community/university partnership involving young people as participants (n = 14) and advisors (n = 6). Experiential, reflexive thematic analysis (TA) within a critical approach generated three themes relating to young people’s experiences with and beliefs about school mental health promotion and suicide prevention. Findings highlight the critical role of schools in impacting young people’s mental health, with the need to amplify youth voice and involvement in school mental health evident. Our study addresses an important gap by employing participatory-based approaches to explore young people’s perspectives on school mental health and suicide prevention. This is the first known study to explore young people’s perspectives on their voice and involvement in school mental health. Findings have important implications for youth and school mental health and suicide prevention research, policy, and practice.

BackgroundGlobally, suicide is the fourth leading cause of adolescent mortality. Although post-primary school-based suicide prevention (PSSP) interventions are an evidence-based strategy for targeting adolescent suicidal thoughts and behaviours (STBs), PSSP effectiveness does not easily translate to school settings. Although adolescents’ perspectives on PSSP are particularly important for: (1) intervention effectiveness and implementation in both research and practice, (2) addressing PSSP evidence-practice gaps, and (3) enhancing meaningful adolescent involvement in PSSP, there is gap in understanding adolescents’ experiences of engaging with PSSP. As such, this protocol outlines a meta-ethnography which will explore and synthesise adolescents’ perspectives on engaging with PSSP interventions, as participants/end-users, intervention advisors, facilitators, and co-designers and co-researchers.MethodsThe meta-ethnography protocol follows the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) guidelines. The meta-ethnography study design was guided by Noblit and Hares’ (1988) seven stage process for meta-ethnography. Searches of PsycINFO, Medline, Web of Science, CINAHL, ERIC, Scopus and study reference lists will identify peer-reviewed studies. Grey literature will be identified by searches in ProQuest, British Library EThOS, and DART-Europe E-theses Portal. The main reviewer will initially assess the eligibility of studies based on title and abstract, with full texts reviewed by at least two reviewers. Findings of the included studies will be synthesised in line with Noblit and Hare’s stages and evaluated using the Critical Appraisal Skills Programme (CASP) checklist. DiscussionTo our knowledge, this is the first proposed meta-ethnography to explore and integrate the findings of qualitative studies exploring adolescents’ perspectives on engaging with PSSP interventions. Understanding adolescents’ experiences of engaging with PSSP will impact the field of PSSP in several ways by: (1) enhancing research processes and intervention effectiveness and implementation, (2) informing decision-making and policymaking relevant to practice, (3) guiding meaningful adolescent involvement in PSSP, and (4) contributing to knowledge on the safety implications of engaging adolescents in PSSP. Finally, it is expected that the insights from this meta-ethnography will be widely applicable, given the growing demand for meaningful youth involvement in health-related fields. Registration This protocol is under submission with PROSPERO for preregistration.