• Marissa L Zwald, Kristin M Holland, Daniel A Bowen, Thomas R Simon, Linda L Dahlberg, Zachary Stein, Nimi Idaikkadar, and James A Mercy.
• Division of Violence Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA; United States Public Health Service, Rockville, MD. Electronic address: mzwald@cdc.gov.
• Ann Emerg Med. 2022 May 1; 79 (5): 465-473.

Study ObjectiveWe describe trends in emergency department (ED) visits for initial firearm injury encounters in the United States.MethodsUsing data from the Centers for Disease Control and Prevention's National Syndromic Surveillance Program, we analyzed monthly and yearly trends in ED visit rates involving a firearm injury (calculated as the number of firearm injury-related ED visits divided by the total number of ED visits for each month and multiplied by 100,000) by sex-specific age group and US region from 2018 to 2019 and conducted Joinpoint regression to detect trend significance.ResultsAmong approximately 215 million ED visits captured in the National Syndromic Surveillance Program from January 2018 to December 2019, 132,767 involved a firearm injury (61.6 per 100,000 ED visits). Among males, rates of firearm injury-related ED visits significantly increased for all age groups between 15 and 64 years during the study period. Among females, rates of firearm injury-related ED visits significantly increased for all age groups between 15 and 54 years during the study period. By region, rates significantly changed in the northeast, southeast, and southwest for males and females during the study period.ConclusionThese analyses highlight a novel data source for monitoring trends in ED visits for firearm injuries. With increased and effective use of state and local syndromic surveillance data, in addition to improvements to firearm injury syndrome definitions by intent, public health professionals could better detect unusual patterns of firearm injuries across the United States for improved prevention and tailored response efforts.Copyright © 2022 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved.

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