HCUP Releases 2008 Nationwide Emergency Department Sample

Research Activities, December 2010, No. 364

The Agency for Healthcare Research and Quality (AHRQ) recently released its newest Healthcare Cost and Utilization Project (HCUP) database, the 2008 Nationwide Emergency Department Sample (NEDS). The NEDS is the largest all-payer emergency department (ED) database in the United States. The NEDS was created to enable analyses of ED use patterns and to support public health professionals, administrators, policymakers, and clinicians in their understanding and decisionmaking regarding this critical source of health care.

The NEDS has many research applications as it contains information on hospital characteristics, patient characteristics, geographic region, and the nature of the ED visits (e.g., common reasons for ED visits, including injuries). The database includes information on all visits to the ED, regardless of payer—including persons covered by Medicare, Medicaid, private insurance, and the uninsured.

The 2008 NEDS contains data from 28 million ED visits, and encompasses all encounter data from nearly 1,000 hospital-based EDs in 28 States. The NEDS approximates a 20-percent stratified sample of EDs from community hospitals. Weights are provided to calculate national estimates pertaining to the 125 million ED visits that took place in 2008. The database was constructed using records from both the HCUP State Emergency Department Databases and the State Inpatient Databases. The NEDS provides information on "treat-and-release" ED visits, as well as ED visits in which the patient was admitted to the same hospital for further care.

The 2008 NEDS can be purchased through the HCUP Central Distributor at Healthcare Cost and Utilization Project (HCUP) .

Statistics from the NEDS are available on HCUPNet , the free online query system.

More information about the NEDS can be found on the HCUP-US Web site at http://hcup-us.ahrq.gov/nedsoverview.jsp.

  • On average, hospital stays for people with diabetes cost hospitals 25 percent more than stays for people who did not have diabetes ($10,937 versus $8,746, respectively).
  • Medicare paid 60 percent of the hospital stays of people with diabetes; private insurance, 23 percent; and Medicaid, 10 percent. Some 4 percent of patients were uninsured.
  • About 42 percent of hospital stays for congestive heart failure, 38 percent for hardening of the arteries, 34 percent for heart attack, 31 percent for chronic obstructive pulmonary disease, and 29 percent for chest pain with no specific cause involved patients who also had diabetes.
  • The West had the lowest hospitalization rate for diabetes, 1,866 per 100,000 persons, while the South had the highest rate, 2,829 per 100,000 people.

This AHRQ News and Numbers is based on data in Hospital Stays for Patients with Diabetes, 2008 (http://www.hcup-us.ahrq.gov/reports/statbriefs/sb93.jsp). The report uses statistics from the 2008 Nationwide Impatient Sample, a part of AHRQ's Healthcare Cost and Utilization Project.

Current as of December 2010
Internet Citation: HCUP Releases 2008 Nationwide Emergency Department Sample: Research Activities, December 2010, No. 364. December 2010. Agency for Healthcare Research and Quality, Rockville, MD. http://archive.ahrq.gov/news/research-activities/dec10/1210RA27.html