• Ingrid Llovera, Kirsten Loscalzo, Jia Gao, Timmy Li, Martina Brave, Lance Becker, and Isabel Barata.
• Northwell North Shore University Hospital, Department of Emergency Medicine, 300 Community Dr, Manhasset, NY 11030, United States of America. Electronic address: illovera@northwell.edu.
• Am J Emerg Med. 2019 Mar 1; 37 (3): 486-488.

ObjectiveWe studied the impact four new urgent care centers (UCCs) had on a hospital emergency department (ED) in terms of overall census and proportion of low acuity diagnoses from 2009 to 2016. We hypothesized that low acuity medical problems frequently seen in UCCs would decrease in the ED population. Since Medicaid was not accepted at these UCCs, we also studied the Medicaid vs non-Medicaid discharged populations to see if there were some differences related to access to urgent care.MethodsWe conducted a retrospective review of computerized billing data. We included all patients from 2009 to 2016 who were seen in the ED. We used the Cochran-Armitage Trend Test to examine trends over time.ResultsAs hypothesized, the proportion of ED patients with a diagnosis of pharyngitis decreased significantly over this time period from 1% to 0.6% (p < 0.0001). The rate of bronchitis in the total ED population also decreased significantly (0.5% to 0.13%, p < 0.0001).When we looked at the discharged patients with and without Medicaid, we found that significantly more Medicaid than non-Medicaid patients presented with pharyngitis to the ED with an increasing trend from 2009 to 2016: OR = 2.33, p < 0.0001. The overall census of the ED rose over the period 2009 to 2016 (80,478 to 85,278/year). Overall admission rates decreased significantly: 36.9% to 34.5% (p < 0.0001).ConclusionWith the introduction of four new urgent care centers (UCCs) within 5 miles of the hospital, the ED diagnoses of pharyngitis and bronchitis, two of the most common diagnoses seen in UCCs, decreased significantly. Significantly more Medicaid discharged patients presented to the ED with pharyngitis than in the non-Medicaid discharged group, likely because Medicaid patients had no access to UCCs.Copyright © 2018 Elsevier Inc. All rights reserved.

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