Suicide Attempt as a Risk Factor for Completed Suicide: Even More Lethal Than We Knew

By J. Bostwick, Chaitanya P. Pabbati, J. Geske, A. McKean. American Journal of Psychiatry, 2016

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Objective While suicide attempt history is considered to robustly predict completed suicide, previous studies have limited generalizability from using convenience samples of specific methods/treatment settings, disregarding previous attempts, or overlooking first-attempt deaths. Eliminating these biases should more accurately estimate suicide prevalence in attempters. Method This observational retrospective-prospective cohort study using the Rochester Epidemiology Project identified 1,490 (555 males/935 females) Olmsted County residents making index suicide attempts (first lifetime attempts reaching medical attention) between 01-01-1986 and 12-31-2007. The National Death Index identified suicides between enrollment and 12-31-2010 (follow-up 3-25 years). Medical records were queried for sex, age, method, and follow-up care for index attempt survivors. Coroner records yielded data on index attempt deaths. Results During the study period, 81/1490 enrollees (5.4%) died by suicide. Of the 81, 48 (59.3%) perished on index attempt; 27 of the surviving 33 index attempt survivors (81.8%) killed themselves within a year. Males were disproportionately represented: 62/81 (11.2% of men; 76.5% of suicides) vs 19/81 (2.0% of women, 23.5% of suicides). Of dead index attempters, 72.9% used guns, yielding an odds ratio for gunshot death vs all other methods of 140 [95%CI:60,325]. When adjusted for covariates, survivors given follow-up psychiatric appointments had significantly lower likelihood of subsequent suicide (OR=0.212[95%CI:0.089, 0.507]). Conclusions At 5.4%, completed suicide prevalence in this community cohort of suicide attempters was almost 59% higher than previously reported. An innovative aspect of this study explains the discrepancy: by including index attempt deaths—approximately 60% of total suicides—suicide prevalence more than doubled. We contend that counting both index and subsequent attempts deaths more accurately reflects prevalence. Our findings support suicide attempt as an even more lethal risk factor for completed suicide than previously thought. Research should focus on identifying risk factors for populations vulnerable to making first attempts and target risk reduction in those groups.

Subfields: Clinical Psychology, Health, Ophthalmology

View Paper: https://www.semanticscholar.org/paper/642dfa4dc5051c2e3d03e79408ab749ab4f23a20

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Citations in the corpus

Knowledge-aware Assessment of Severity of Suicide Risk for Early Intervention (2019, background): “Additional measures are necessary to improve timely intervention [5].”