• William P Qiao, Emilie S Powell, Mark P Witte, and Martin R Zelder.
• Department of Emergency Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611. Electronic address: p-qiao@northwestern.edu.
• Am J Emerg Med. 2016 Jan 1; 34 (1): 101510-5.

BackgroundProlonged emergency department (ED) wait times could potentially lead to increased mortality. Studies have demonstrated that black patients waited significantly longer for ED care than nonblack patients. However, the disparity in wait times need not necessarily manifest across all illness severities. We hypothesize that, on average, black patients wait longer than nonblack patients and that the disparity is more pronounced as illness severity decreases.MethodsWe studied 34143 patient visits in 353 hospital EDs in the National Hospital Ambulatory Medical Care Survey in 2008. In a 2-model approach, we regressed natural logarithmically transformed wait time on the race variable, other patient-level variables, and hospital-level variables for 5 individually stratified illness severity categories. We reported results as percent difference in wait times, with 95% confidence intervals. We used P < .05 for significance level.ResultsOn average, black patients experienced significantly longer mean ED wait times than white patients (69.2 vs 53.3 minutes; P < .001). In the multivariate model, black patients did not experience significant different wait times for the 2 most urgent severity categories; black patients experienced increasingly longer waits vs nonblack patients for the 3 least urgent severity categories (14.7%, P < .05; 15.9%, P < .05; 29.9%, P < .001, respectively).ConclusionRacial disparity in ED wait times between black and nonblack patients exists, and the size of the disparity is more pronounced as illness severity decreases. We do not find a racial disparity in wait times for critically ill patients.Copyright © 2015 Elsevier Inc. All rights reserved.

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