Factors Associated With Closures of Emergency Departments in the United States

Abstract

Context Between 1998 and 2008, the number of hospital-based emergency departments (EDs) in the United States declined, while the number of ED visits increased, particularly visits by publicly-insured and uninsured patients. Little is known about the hospital, community, and market factors associated with ED closures. Federal law requiring EDs to treat all in need regardless of a patient’s ability to pay may make EDs more vulnerable to the market forces that govern US health care. Objective To determine hospital, community, and market factors associated with ED closures. Design ED and hospital organizational information from 1990 through 2009 was acquired from the American Hospital Association (AHA) Annual Surveys (annual response rates ranging from 84–92%) and merged with hospital financial and payer mix information available through 2007 from Medicare hospital cost reports. We evaluated 3 sets of risk factors: hospital characteristics (safety-net as defined by hospitals caring for more than double their Medicaid share of discharges, compared with other hospitals within a 15-mile radius) ownership, teaching status, system membership, hospital size, case-mix), county population demographics (race, poverty, uninsurance, elderly), and market factors (ownership mix, profit margin, location in a competitive market, presence of other EDs). Setting All general, acute, non-rural, short-stay hospitals in the US with an operating ED anytime from 1990–2009. Main Outcome Closure of an emergency department anytime during the study period. Results The number of hospitals with EDs in non-rural areas declined from 2446 in 1990 to 1779 in 2009, with 1041 EDs closing and 374 hospitals opening EDs. Based on analysis of 2,814 urban acute care hospitals, constituting 36,335 hospital-year observations over an 18-year study interval (1990–2007), for-profit hospitals and those with low profit margins were more likely to close than their counterparts (26% vs 16%; HR 1.8, 95% CI 1.5 to 2.1 and 36% vs 18%; HR 1.9, 95% CI 1.6 to 2.3, respectively]. Hospitals in more competitive markets had a significantly higher risk of closing their EDs (34% vs 17%; HR 1.3, 95% CI 1.1 to 1.6), as did safety-net hospitals (10% vs 6%; HR 1.4, 95% CI 1.1 to 1.7) and those serving a higher share of populations in poverty (37% vs 31%; HR 1.4, 95% CI 1.1 to 1.7). Conclusion From 1990 to 2009, the number of hospital EDs in non-rural areas declined by 27%, with for-profit ownership, location in a competitive market, safety-net status, and low profit margin associated with increased risk of ED closure.

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