• Ann Emerg Med · Jan 2020

    One-Year Mortality After Emergency Department Visit for Nonfatal Opioid Poisoning: A Population-Based Analysis.

    • Pamela Leece, Cynthia Chen, Heather Manson, Aaron M Orkin, Brian Schwartz, David N Juurlink, and Tara Gomes.
    • Health Promotion, Chronic Disease, and Injury Prevention, Public Health Ontario, Toronto, Ontario, Canada; Department of Family and Community Medicine, University of Toronto, Ontario, Canada; Dalla Lana School of Public Health, University of Toronto, Ontario, Canada. Electronic address: pamela.leece@oahpp.ca.
    • Ann Emerg Med. 2020 Jan 1; 75 (1): 20-28.

    Study ObjectiveWe aim to characterize the incidence and risk factors for opioid-related and all-cause mortality in the year after an emergency department (ED) visit for nonfatal opioid poisoning by conducting a population-based study.MethodsWe used linked health care databases in Ontario, Canada, to identify individuals who attended an ED for nonfatal opioid poisoning between January 1, 2015, and December 31, 2016. Using Cox proportional hazards regression, we examined predictors of mortality in the year after discharge (ED or hospital, if admitted).ResultsIn this cohort (n=6,140), 327 individuals (5.3%) died of any cause and 118 (1.9%) died of opioid-related causes within 1 year. Adjusting for other covariates, we found that health service use in the first week was not protective for opioid-related death (hazard ratio [HR] 0.70; 95% confidence interval [CI] 0.47 to 1.06) or all-cause mortality (HR 0.98; 95% CI 0.78 to 1.24). In exploring other covariates, predictors of opioid-related mortality included male sex (HR 1.98; 95% CI 1.32 to 2.97) and using opioid agonist therapy (HR 1.79; 95% CI 1.15 to 2.80) or benzodiazepine (HR 1.54; 95% CI 1.02 to 2.31) in the 12 months before the index event. Assessment by a family physician in the previous 12 months was associated with a lower risk of opioid-related and all-cause mortality (HR 0.58, 95% CI 0.39 to 0.86; and HR 0.63, 95% CI 0.49 to 0.82, respectively).ConclusionWe identified predictors of opioid-related and all-cause mortality after ED presentation for opioid poisoning. Several predictors of mortality may facilitate targeted interventions.Crown Copyright © 2019. Published by Elsevier Inc. All rights reserved.

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