• Heather A Hartman, Laura A Seewald, Philip Stallworth, Daniel B Lee, Marc A Zimmerman, Peter F Ehrlich, Maureen A Walton, Kenneth Resnicow, and Patrick M Carter.
• UM Institute for Firearm Injury Prevention, University of Michigan, 1109 Geddes Avenue, Ann Arbor, MI 48109, United States of America; Department of Surgery, Univ. of Michigan Medical School, 1500 East Medical Center Drive, Ann Arbor, MI 48105, United States of America. Electronic address: heahar@umich.edu.
• Prev Med. 2025 Jan 1; 190: 108183108183.

IntroductionFirearm injuries are a leading cause of death for youth/young-adults. We utilized latent class analysis to identify distinct motivational/behavioral patterns of firearm possession in a youth/young-adult emergency department sample to inform prevention strategies.MethodsCross-sectional data were obtained from surveys conducted among youth/young-adults (age = 16-29; n = 1311) seeking emergency department treatment (7/10/2017-6/25/2018). Latent class analysis was performed for individuals reporting firearm possession (n = 223) using five variables: carriage frequency, social carriage, risky firearm behaviors, ownership/carriage for protection, and recreational ownership/carriage. Descriptive statistics were examined.ResultsIn this sample, 17.0 % reported having firearms (age-22.7; 48.0 %-male; 49.3 %-Black; 52.5 %-public assistance). Latent class analysis identified four classes: 1-recreational possession (n = 51); 2-possession for protection with low carriage (n = 60); 3-carriage for protection with low risky firearm behaviors (n = 76); and 4-carriage for protection with high risky firearm behaviors (n = 36). Class-1 (recreational possession) had low firearm victimization, violence exposure, and community violence. This class primarily kept long-guns with secure storage patterns. Class-2 (protection with low carriage) were mostly female youth/young-adults with children and reported moderately high rates of violence exposure. Nearly 20 % stored their firearm unlocked. Class-3 and -4 endorsed firearm carriage for protection, with Class-4 also engaging in risky firearm behaviors. Both classes had high violence exposure; however, Class-4 had higher risk profiles including higher marijuana misuse, mental health symptoms, and firearm victimization.ConclusionsAmong an emergency department sample, four distinct firearm possession classes emerged with different risk levels. Understanding firearm behaviors and risk/protective factors is critical to tailoring healthcare-focused interventions to address individual needs and reduce injury risk.Copyright © 2024 Elsevier Inc. All rights reserved.

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