Efficacy of the Zero Suicide framework in reducing recurrent suicide attempts: cross-sectional and time-to-recurrent-event analyses

Nicolas J. C. Stapelberg*, Jerneja Sveticic, Ian Hughes, Alice Almeida-Crasto, Taralina Gaee-Atefi, Neeraj Gill, Diana Grice, Ravikumar Krishnaiah, Luke Lindsay, Carla Patist, Heidy Van Engelen, Sarah Walker, Matthew Welch, Sabine Woerwag-Mehta, Kathryn Turner

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)
3 Downloads (Pure)

Abstract

Background 

The Zero Suicide framework is a system-wide approach to prevent suicides in health services. It has been implemented worldwide but has a poor evidence-base of effectiveness. 

Aims 

To evaluate the effectiveness of the Zero Suicide framework, implemented in a clinical suicide prevention pathway (SPP) by a large public mental health service in Australia, in reducing repeated suicide attempts after an index attempt. 

Method 

A total of 604 persons with 737 suicide attempt presentations were identified between 1 July and 31 December 2017. Relative risk for a subsequent suicide attempt within various time periods was calculated using cross-sectional analysis. Subsequently, a 10-year suicide attempt history (2009-2018) for the cohort was used in time-to-recurrent-event analyses. 

Results 

Placement on the SPP reduced risk for a repeated suicide attempt within 7 days (RR = 0.29; 95% CI 0.11-0.75), 14 days (RR = 0.38; 95% CI 0.18-0.78), 30 days (RR = 0.55; 95% CI 0.33-0.94) and 90 days (RR = 0.62; 95% CI 0.41-0.95). Time-to-recurrent event analysis showed that SPP placement extended time to re-presentation (HR = 0.65; 95% CI 0.57-0.67). A diagnosis of personality disorder (HR = 2.70; 95% CI 2.03-3.58), previous suicide attempt (HR = 1.78; 95% CI 1.46-2.17) and Indigenous status (HR = 1.46; 95% CI 0.98-2.25) increased the hazard for re-presentation, whereas older age decreased it (HR = 0.92; 95% CI 0.86-0.98). The effect of the SPP was similar across all groups, reducing the risk of re-presentation to about 65% of that seen in those not placed on the SPP. 

Conclusions 

This paper demonstrates a reduction in repeated suicide attempts after an index attempt and a longer time to a subsequent attempt for those receiving multilevel care based on the Zero Suicide framework.

Original languageEnglish
Pages (from-to)427-436
Number of pages10
JournalBritish Journal of Psychiatry
Volume219
Issue number2
DOIs
Publication statusPublished - Aug 2021

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