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Treatments for the Prevention and Management of Suicide: A Systematic Review
Kristen E D'Anci1, Stacey Uhl1, Gina Giradi1
1ECRI Institute, Plymouth Meeting, Pennsylvania (K.E.D., S.U., G.G., C.M.).
Background:
Suicide is a growing public health problem, with the national rate in the United States increasing by 30% from 2000 to 2016.
Purpose:
To assess the benefits and harms of nonpharmacologic and pharmacologic interventions to prevent suicide and reduce suicide behaviors in at-risk adults.
Data Sources:
MEDLINE, EMBASE, PsycINFO, and other databases from November 2011 through May 2018.
Study Selection:
Systematic reviews (SRs) and randomized controlled trials (RCTs) that assessed nonpharmacologic or pharmacologic therapies for adults at risk for suicide.
Data Extraction:
One investigator abstracted data and assessed study quality, and a second investigator checked abstractions and assessments for accuracy.
Data Synthesis:
Eight SRs and 15 RCTs were included. The evidence for psychological interventions suggests that cognitive behavioral therapy (CBT) reduces suicide attempts, suicidal ideation, and hopelessness compared with treatment as usual (TAU). Limited evidence suggests that dialectical behavior therapy (DBT) reduces suicidal ideation compared with wait-list control or crisis planning. The evidence for pharmacologic treatments suggests that ketamine reduces suicidal ideation with minimal adverse events compared with placebo or midazolam. Lithium reduces rates of suicide among patients with unipolar or bipolar mood disorders compared with placebo. However, no differences were observed between lithium and other medications in reducing suicide.
Limitation:
Qualitative synthesis of new evidence with existing meta-analyses, methodological shortcomings of studies, heterogeneity of nonpharmacologic interventions, and limited evidence for pharmacologic treatments and harms.
Conclusion:
Both CBT and DBT showed modest benefit in reducing suicidal ideation compared with TAU or wait-list control, and CBT also reduced suicide attempts compared with TAU. Ketamine and lithium reduced the rate of suicide compared with placebo, but there was limited information on harms. Limited data are available to support the efficacy of other nonpharmacologic or pharmacologic interventions.
Primary Funding Source:
U.S. Department of Veterans Affairs Veterans Health Administration. (PROSPERO: CRD42018104978).
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