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Uncomplicated acute rhinosinusitis (ARS) is most appropriately managed in an outpatient clinic setting. Some ARS patients present to emergency departments (EDs) for care. We investigates factors associated with ARS presentation to EDs versus outpatient settings.

Cross‐sectional study.

A total of 17,122,551 pediatric and adult patient visits from the 2009 and 2010 National Ambulatory Medical Care and National Hospital Ambulatory Medical Care Surveys for ARS were identified. Patients with ARS complications were excluded. Univariate and multivariate associations identified demographic and socioeconomic characteristics of ARS patients independently associated with ED presentation. Temperature >100°F was used as a proxy for ARS severity.

Patients with Medicaid (odds ratio [OR] = 10.82, P < .001) or no insurance (OR = 9.14, P < .001 …