• Michael J Ward, Diwas Kc, Cathy A Jenkins, Dandan Liu, Amit Padaki, and Jesse M Pines.
• Department of Emergency Medicine, Vanderbilt University School of Medicine, United States of America. Electronic address: michael.j.ward@vanderbilt.edu.
• Am J Emerg Med. 2019 May 1; 37 (5): 851-858.

Study ObjectiveTo study the variation in opioid prescribing among emergency physicians and facilities for discharged adult ED patients.MethodsWe conducted a retrospective analysis of ED visits from five U.S. hospitals between January and May 2014 using records from Data to Intelligence (D2i). We examined physician- and facility-level variation in opioid prescription rates for discharged ED patients. We calculated unadjusted opioid prescription rates at the physician and facility levels and used a multivariable mixed-effect logistic regression model to examine within-facility physician variation in opioid prescription adjusting for patient and situational factors including time of presentation, ED census, and physician workload.ResultsIn 47,304 visits across five EDs, median patient age was 40 years old (IQR 28,55), and 89% had some form of insurance. There were 17,098 (36%) ED discharges with at least one opioid prescription. The unadjusted facility-level opioid prescription rate ranged from 24%-46%. Among 253 ED physicians, the adjusted opioid prescription rate varied from 22%-76%. Increased physician workload is related to decreased odds of opioid prescription at ED discharge for the lowest (<3 patients) and moderate (6-9 patients) physician workload levels, while the association weakened with increasing levels of workload.ConclusionThere was substantial physician and facility variation in opioid prescription for discharged adult ED patients. Emergency physicians were less likely to prescribe opioids when their workload was lower, and this effect diminished at high workload levels. Understanding situational and other factors that explain this variation is important given the rising U.S. opioid epidemic and the need for urgent intervention.Copyright © 2018 Elsevier Inc. All rights reserved.

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