• Douglas J Wiebe, Mercedes M Blackstone, Cynthia J Mollen, Alison J Culyba, and Joel A Fein.
• Department of Biostatistics and Epidemiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6021, USA. dwiebe@mail.med.upenn.edu
• J Adolesc Health. 2011 Oct 1;49(4):440-2.

PurposeTo estimate, using a novel interactive voice response (IVR) survey, the incidence of self-reported violence-related experiences of adolescent assault-injured patients in the weeks after discharge from the emergency department (ED).MethodsIn an urban ED, a prospective cohort study with 8-week follow-up IVR survey either weekly, bi-weekly, or monthly after discharge was conducted with patients aged 12–19 years presenting with assault-related injuries. Survival analysis methods were used to estimate cumulative risks of self-reported violence experienced within 4 and 8 weeks.ResultsA total of 95 patients were enrolled; 42 (44.2%) reported to the IVR survey. As a result of the ED index event, an estimated 18.2% (confidence interval [CI]=9.1%–34.6%) reported being assaulted (no weapon), 2.9% (CI = .4%–19.1%) had been shot or stabbed, 20.7% (CI =10.9%–37.3%) had assaulted someone else (no weapon), and 2.9% (CI=.4%–19.1%) shot or stabbed someone else. Additionally, 54.6% (CI=39.6%–70.9%) had avoided going certain places, 47.0% (CI = 32.5%–64.1%) considered retaliating, 38.1% (CI =24.3%–56.3%) had been threatened, and 27.0% (CI =15.4%–44.6%) had carried a weapon. Most outcome occurrences happened within 4 weeks. There was evidence that intent to retaliate when asked at baseline was associated with an elevated risk of several outcomes.ConclusionsThe risk for subsequent violence among assault-injured adolescent ED patients appears high within weeks of discharge.

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