• Alexandrea O Cronin, Deborah J Morton, Jesse J Brennan, and Edward M Castillo.
• Department of Emergency Medicine, University of California San Diego, San Diego, California.
• J Emerg Med. 2020 Sep 1; 59 (3): 357-363.

BackgroundEmergency departments (EDs) have experienced an increase in annual patient visits and length of stay over the past decade. Management of frequent-user patients with pain-related diagnoses are challenging in a time-limited setting.ObjectiveThe purpose of this study was to describe characteristics of frequent ED users with pain-related diagnoses.MethodsThis was a retrospective longitudinal cohort study of hospital ED visits from two EDs in using encounters from September 2016 to August 2018. Frequent users were characterized as having four or more visits in a 1-year period and were further classified into three categories based on the number of pain-related visits in the study period. Descriptive statistics and regression analysis results are reported for all demographic and clinical characteristics for index encounters, patient level data, and pain subgroups.ResultsOf all patients, 11.3% (n = 5174) were identified as frequent users, accounting for 38.9% (n = 91,114) of all ED visits. Overall, frequent pain users were more likely to be of middle age (odds ratio [OR] 1.70, 95% confidence interval [CI] 0.80-1.72), female (OR 2.43, 95% CI 1.79-3.29), have commercial insurance (OR 1.91, 95% CI 1.37-2.66), and have 10 or more ED encounters (super user status) in a 12-month period (OR 23.66, 95% CI 17.12-32.71).ConclusionUnderstanding characteristics of ED frequent users with pain-related diagnoses may inform community-based interventions designed to reduce episodic care and thereby improve care coordination and management.Copyright © 2020 Elsevier Inc. All rights reserved.

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