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BMC Public Health
Published in: BMC Public Health 1/2018

Open Access 01-12-2018 | Research article

Preventing suicidal behaviours with a multilevel intervention: a cluster randomised controlled trial

Authors: Sunny Collings, Gabrielle Jenkin, James Stanley, Sarah McKenzie, Simon Hatcher

Published in: BMC Public Health | Issue 1/2018

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Abstract

Background

In the context of the recent surge in community based multilevel interventions for suicide prevention, all of which show promising results, we discuss the implications of the findings of such an intervention designed for and implemented in New Zealand. The multi-level intervention for suicide prevention in New Zealand (MISP-NZ) was a cluster randomised controlled community intervention trial involving eight hospital regions matched into four pairs and randomised to either the intervention or practice as usual (the control). Intervention regions received 25 months of interventions (01 June 2010 to 30 June 2012) including: 1) training in recognition of suicide risk factors; 2) workshops on mental health issues; 3) community based interventions (linking in with community events); and 4) distribution of print material and information on web-based resources.

Results

There was no significant difference between the change in rate of suicidal behaviours (ISH or self-inflicted deaths) in the intervention group compared with the control group (rate ratio = 1.07, 95% CI 0.82, 1.38).

Conclusions

This study did not provide substantive evidence that the MISP-NZ intervention had an effect on suicidal behaviours raising important questions about the potential effectiveness of the multilevel intervention model for suicide prevention for all countries. Although a range of factors may account for this unanticipated finding, including inadequate study power, differences in design and intervention focus, and country-specific contextual factors, it is possible that the effectiveness of the multilevel intervention model for reducing suicidal behaviours may have been overstated.

Trial registration

This trial was retrospectively registered on 11 April 2013. ACTRN12613000399​796.
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Metadata
Title
Preventing suicidal behaviours with a multilevel intervention: a cluster randomised controlled trial
Authors
Sunny Collings
Gabrielle Jenkin
James Stanley
Sarah McKenzie
Simon Hatcher
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Public Health / Issue 1/2018
Electronic ISSN: 1471-2458
DOI
https://doi.org/10.1186/s12889-018-5032-6

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