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Suicide is a significant national and international public health issue. Each year an estimated 3300 Australians and approximately 650 New Zealanders die by suicide. While suicide is a behaviour not an illness, it can occur in the absence of mental illness. The determinants and precipitants of mental illness and suicide are interrelated and frequently associated with one another. The aim of this chapter is to discuss and describe demographic characteristics of suicide, key definitions and drivers of suicide, suicide risk factors, plus lived experience of suicide and suicide related harms through first person accounts. As with other forms of mental distress, people in suicide and self-harm crisis can be helped through compassionate and person-centred approaches.
Suicide is a significant national and international public health issue. Each year an estimated 3300 Australians and approximately 650 New Zealanders die by suicide. While suicide is a behaviour not an illness, it can occur in the absence of mental illness. The determinants and precipitants of mental illness and suicide are interrelated and frequently associated with one another. The aim of this chapter is to discuss and describe demographic characteristics of suicide, key definitions and drivers of suicide, suicide risk factors, plus lived experience of suicide and suicide related harms through first person accounts. As with other forms of mental distress, people in suicide and self-harm crisis can be helped through compassionate and person-centred approaches.
Safety planning-type interventions (SPTIs) for patients at risk of suicide are often used in clinical practice, but it is unclear whether these interventions are effective.
Aims
This article reports on a meta-analysis of studies that have evaluated the effectiveness of SPTIs in reducing suicidal behaviour and ideation.
Method
We searched Medline, EMBASE, PsycINFO, Web of Science and Scopus from their inception to 9 December 2019, for studies that compared an SPTI with a control condition and had suicidal behaviour or ideation as outcomes. Two researchers independently extracted the data. To assess suicidal behaviour, we used a random-effects model of relative risk based on a pooled measure of suicidal behaviour. For suicidal ideation, we calculated effect sizes with Hedges’ g. The study was registered at PROSPERO (registration number CRD42020129185).
Results
Of 1816 unique abstracts screened, 6 studies with 3536 participants were eligible for analysis. The relative risk of suicidal behaviour among patients who received an SPTI compared with control was 0.570 (95% CI 0.408–0.795, P = 0.001; number needed to treat, 16). No significant effect was found for suicidal ideation.
Conclusions
To our knowledge, this is the first study to report a meta-analysis on SPTIs for suicide prevention. Results support the use of SPTIs to help preventing suicidal behaviour and the inclusion of SPTIs in clinical guidelines for suicide prevention. We found no evidence for an effect of SPTIs on suicidal ideation, and other interventions may be needed for this purpose.
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