• Kipling M Bohnert, Maureen A Walton, Megan Ranney, Erin E Bonar, Frederic C Blow, Marc A Zimmerman, Brenda M Booth, and Rebecca M Cunningham.
• Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI 48105, USA; National Serious Mental Illness Treatment Resource and Evaluation Center, Department of Veterans Affairs, Ann Arbor, MI 48105, USA.
• Addict Behav. 2015 Feb 1;41:97-105.

BackgroundViolence is a leading cause of injury among youth 15-24years and is frequently associated with drug use. To inform optimal violence interventions, it is critical to understand the baseline characteristics and intent to retaliate of drug-using, assault-injured (AI) youth in the Emergency Department (ED) setting, where care for violent injury commonly occurs.MethodsAt an urban ED, AI youth ages 14-24 endorsing any past six-month substance use (n=350), and a proportionally-sampled substance-using comparison group (CG) presenting for non-assault-related care (n=250), were recruited and completed a baseline assessment (82% participation). Medical chart review was also conducted. Conditional logistic regression was performed to examine correlates associated with AI.ResultsOver half (57%) of all youth met the criteria for drug and/or alcohol use disorder, with only 9% receiving prior treatment. Among the AI group, 1 in 4 intended to retaliate, of which 49% had firearm access. From bivariate analyses, AI youth had poorer mental health, greater substance use, and were more likely to report prior ED visits for assault or psychiatric evaluation. Based on multivariable modeling, AI youth had greater odds of being on probation/parole (AOR=2.26; CI=1.28, 3.90) and having PTSD (AOR=1.88; CI=1.01, 3.50) than the CG.ConclusionsAI youth may have unmet needs for substance use and mental health treatment, including PTSD. These characteristics along with the risk of retaliation, increased ED service utilization, low utilization of other health care venues, and firearm access highlight the need for interventions that initiate at the time of ED visit.Copyright © 2014 Elsevier Ltd. All rights reserved.

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