Suicide prevention during disasters and public health emergencies: a systematic review.

Background: Disasters and public health emergencies increasingly affect populations around the world, posing significant wide-ranging challenges for societies as well as for effective public health and suicide prevention. Intervention research is essential to inform evidence-based responses. Yet, despite evident public concern and growing research interest in heightened suicide risks and impacts, little is known about effective suicide prevention interventions in these contexts. We conducted a systematic review to examine the outcomes of suicide prevention strategies implemented in disasters and public health emergencies. Methods: We searched five databases (Medline, Embase, PsycINFO, Web of Science, PTSDpubs) from inception to December 2022 for peer-reviewed quantitative studies that reported relevant intervention outcomes (changes in the frequency of suicide, suicide attempts, self-harm) for populations affected by disasters and public health emergencies. We assessed the quality of eligible studies using the Quality Assessment Tool for Quantitative Studies, and distilled review findings through narrative synthesis. The study protocol was registered with PROSPERO (CRD42021276195). Results: Ten eligible and mostly observational studies were included in this review, which examined a range of universal, selective, and indicated interventions. Three of five studies of interventions in public health emergencies indicated the potential effectiveness and buffering effects of generic disaster related mental health support, access to urban parks, as well as the beneficial role of video-enabled tablets in facilitating treatment access and outcomes. Similarly, three of five studies of interventions in disaster contexts provided evidence of the beneficial role of universal economic security measures, national gun laws and buy back schemes, and volunteer-delivered mental health support. Overall, four of six studies with favorable outcomes examined interventions specifically deployed in disaster or public health emergency contexts, whereas two studies examined ongoing existing interventions. Three studies, respectively, of suicide prevention focused interventions or generic interventions reported favorable outcomes. The quality of included studies was variable, with two studies being rated as 'strong', four studies rated as 'moderate', and four studies rated as 'weak'. Conclusion: Notwithstanding the limited scope and variable quality of published evidence, our review findings highlight the breadth of interventions that have been applied in such contexts with some success. There is a need for further research on effective interventions and intervention adaptations to inform evidence-based suicide prevention responses to disasters and public health emergencies. Systematic review registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021276195, PROSPERO ID CRD42021276195.

Implementation of Complex Suicide Prevention Interventions: Insights into Barriers, Facilitators and Lessons Learned.

INTRODUCTION: Effective suicide prevention interventions are infrequently translated into practice and policy. One way to bridge this gap is to understand the influence of theoretical determinants on intervention delivery, adoption, and sustainment and lessons learned. This study aimed to examine barriers, facilitators and lessons learned from implementing complex suicide prevention interventions across the world. METHODS AND MATERIALS: This study was a secondary analysis of a systematic review of complex suicide prevention interventions, following updated PRISMA guidelines. English published records and grey literature between 1990 and 2022 were searched on PubMed, CINAHL, PsycINFO, ProQuest, SCOPUS and CENTRAL. Related reports were organized into clusters. Data was extracted from clusters of reports on interventions and were mapped using the updated Consolidated Framework for Implementation Research. RESULTS: The most frequently-reported barriers were reported within the intervention setting and were related to the perceived appropriateness of interventions within settings; shared norms, beliefs; and maintaining formal and informal networks and connections. The most frequently reported facilitators concerned individuals' motivation, capability/capacity, and felt need. Lessons learned focused on the importance of tailoring the intervention, responding to contextual needs and the importance of community engagement throughout the process. CONCLUSION: This study emphasizes the importance of documenting and analyzing important influences on implementation. The complex interplay between the contextual determinants and implementation is discussed. These findings contribute to a better understanding of barriers and facilitators salient for implementation of complex suicide prevention interventions.

Attributable risk of suicide for populations in Australia.

Objective: Each year approximately 3,000 Australians die by suicide. We estimated the population attributable risk for identified target populations to provide evidence on how much of the overall burden of suicide in the Australian population is experienced by each of them. Methods: We identified 17 demographic and clinical target populations at risk of suicide and calculated the population attributable fraction (PAF) using a single or pooled suicide risk and the proportional representation of each target population within Australia. Results: Large PAF estimates were found for men (52%, 95% confidence interval (CI) 51%-53%), people bereaved by suicide (35%, 95% CI 14%-64%), people with a mental health or behavioural condition (33%, 95%CI 17%-48%), people with a chronic physical condition (27%, 95%CI 18%-35%), adults aged 25-64 years (13%, 95%CI 12%-14%), LGB populations (9%, 95%CI 6%-13%), offenders (9%, 95%CI 8%-10%), and people employed in blue collar occupations (8%, 95%CI 4%-12%). Limitations: The PAF is limited by assumptions, namely, that risk factors are independent, and that the relationship between risk factors and outcomes are unidirectional and constant through time. Conclusions and implications for public health: Considerable reductions in the overall suicide rate in Australia may occur if risk factors are addressed in identified populations with large PAF estimates. These estimates should be considered as an adjunct to other important inputs into suicide prevention policy priorities.