Skip Navigation Archive: U.S. Department of Health and Human Services U.S. Department of Health and Human Services
Archive: Agency for Healthcare Research Quality
Archival print banner

This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: Let us know the nature of the problem, the Web address of what you want, and your contact information.

Please go to for current information.

AHRQ Releases 2011 Nationwide Emergency Department Sample

Issue 412
AHRQ's Electronic Newsletter summarizes Agency research and programmatic activities.
February 11, 2014

AHRQ Stats

Nearly 85 percent of Americans had health care expenses in 2010, which included out-of-pocket payments and payments by Medicaid, Medicare and private insurance. The percentage was generally lower in California, Texas, and New York, and higher in Illinois. (Source: Agency for Healthcare Research and Quality, Medical Expenditure Panel Survey Statistical Brief #414: Estimates of Health Care Expenditures for the 10 Largest States, 2010.)

Today's Headlines

  1. AHRQ Releases 2011 Nationwide Emergency Department Sample.
  2. CHIPRA Evaluation Highlight Illustrates State Partnerships.
  3. Advanced Methods, Delivery System Research Webinar Series Available on AHRQ Web Site.
  4. Register Now: February 19 Webinar on Evidence-Based Resources for Advanced-Practice Nurses.
  5. All Payer Claims Database Updates Include Increased Data Analysis Capacity.
  6. AHRQ in the professional literature.

1. AHRQ Releases 2011 Nationwide Emergency Department Sample

AHRQ has released its 2011 Nationwide Emergency Department Sample (NEDS), the largest all-payer emergency department (ED) database in the United States. The NEDS was created to provide data for analyses of ED utilization patterns and to support public health professionals, administrators, policymakers, and clinicians in their understanding of and decisionmaking about this critical source of health care. Constructed with records from AHRQ's State Emergency Department Databases and the State Inpatient Databases, the 2011 NEDS contains data from nearly 29 million ED visits and encompasses all encounter data from more than 922 hospital-based EDs in 30 states. It approximates a 20-percent stratified sample of EDs from community hospitals. Weights are provided to calculate national estimates about the 131 million ED visits that took place in 2011. 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 NEDS has many research applications as it contains information on hospital and 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 2011 NEDS is a product of AHRQ's Healthcare Cost and Utilization Project (HCUP) and is available for purchase through the HCUP Central Distributor. Selected aggregate statistics from the NEDS can be accessed at no charge via HCUPnet.

2. CHIPRA Evaluation Highlight Illustrates State Partnerships

The sixth Evaluation Highlight from the national evaluation of the Children's Health Insurance Program Reauthorization Act (CHIPRA) Quality Demonstration Grant Program is available on the AHRQ Web site. Of the 10 grantees that received grant awards, six represent multi-state partnerships involving 14 of the 18 CHIPRA quality demonstration states. This highlight illustrates how states are using the partnerships to improve the quality of children's health care. It describes strategies that states are using to create and maintain cross-state relationships, as well as benefits and challenges of partnering. A supplement to the highlight provides a snapshot of the six multi-state partnerships and the projects they are developing. The analysis covers the first 3 years of these 5-year CHIPRA quality demonstration projects, including a year of planning.

3. Advanced Methods, Delivery System Research Webinar Series Available on AHRQ Web Site

A series of Webinars on advanced approaches to planning, executing, analyzing, and reporting delivery system research is posted on the AHRQ Web site. Evaluating the effectiveness of different approaches to delivering care poses challenges to many of the traditional tenets of designing and conducting research. The series, "Advanced Methods of Delivery System Research," complements those traditional approaches by studying issues including the effects of delivery system change. It was jointly sponsored by AHRQ's Delivery System Initiative and the Agency's Patient-Centered Medical Home (PCMH) program. The package, which includes videos and PowerPoint presentations, is designed to give investigators and researchers a better understanding of social, organizational, technical, and market influences that can help shape future improvement initiatives. The first four Webinars paired authors of papers in the AHRQ PCMH Research Methods Series with an AHRQ grantee or contractor who had conducted research using the selected method. The final Webinar featured guest editors and authors of studies and abstracts from "Integrating Mixed Methods in Health Services and Delivery System Research," an AHRQ-sponsored special issue of Health Services Research published in December.

4. Register Now: February 19 Webinar on Evidence-Based Resources for Advanced-Practice Nurses

AHRQ, in collaboration with the American Association of Nurse Practitioners, is hosting a Webinar on February 19 from 1:00 p.m. to 2:00 p.m. ET on the use of evidence-based recommendations to inform clinical practice. After participating in this Webinar, advanced-practice nurses will be able to:

  • Describe the five major steps in conducting a systematic review.
  • List the evidence-based resources available on the AHRQ Web site, including those available through the Effective Health Care (EHC) Program.
  • Locate the resources available on the U.S. Preventive Services Task Force (USPSTF) Web site, including the Electronic Preventive Services Selector (ePSS) tool.
  • Explain how the EHC Program resources, USPSTF recommendations, and the ePSS tool can be integrated into clinical decisionmaking by advanced-practice nurses.
  • Download the ePSS application to a personal digital assistant or mobile device.

Select to register.

This program was planned in accordance with AANP CE Standards and Policies and AANP Commercial Support Standard and is approved for 1 contact hour of continuing education.

5. All Payer Claims Database Updates Include Increased Data Analysis Capacity

The All Payer Claims Database (APCD) portal in AHRQ's United States Health Information Knowledgebase (USHIK) has been updated and redesigned to improve usability. Updates to the portal, which contains the APCD data dictionaries from participating states, include the following:

  • The most recent reporting specifications for each of the previously loaded states.
  • Colorado APCD reporting specifications.
  • Increased capability to view, analyze, compare, and export state reporting specifications. The home page, list pages, comparisons, and detail pages have all been refreshed.
  • APCD specifications by state, file submissions, or data element lists. Each of these list pages allows a user to filter and/or select a variety of items for comparison.

USHIK is an online, publicly accessible registry and repository of health care–related data, metadata, and standards. USHIK is funded and directed by AHRQ with management support in partnership with the Centers for Medicare & Medicaid Services, and the Centers for Disease Control and Prevention's National Center for Health Statistics.

6. AHRQ in the Professional Literature

Salemi JL, Comins MM, Chandler K, et al. A practical approach for calculating reliable cost estimates from observational data: application to cost analyses in maternal and child health. Appl Health Econ Health Policy 2013 Aug;11(4):343-57. Select to access the abstract on PubMed®.

Panchal JM, Lairson DR, Chan W, et al. Geographic variation and sociodemographic disparity in the use of oxaliplatin-containing chemotherapy in patients with stage III colon cancer. Clin Colorectal Cancer 2013 Jun;12(2):113-21. Epub 2012 Nov 6. Select to access the abstract on PubMed®.

Mull HJ, Borzecki AM, Chen Q, et al. Using AHRQ Patient Safety Indicators to detect postdischarge adverse events in the Veterans Health Administration. Am J Med Qual 2013 Aug 12. Epub ahead of print. Select to access the abstract on PubMed®.

Berkowitz SA, Aragon K, Hines J, et al. Do clinical standards for diabetes care address excess risk for hypoglycemia in vulnerable patients? A systematic review. Health Serv Res 2013 Aug;48(4):1299-1310. Epub 2013 Feb 28. Select to access the abstract on PubMed®.

Zwaan L, Schiff GD, Singh H. Advancing the research agenda for diagnostic error reduction. BMJ Qual Saf 2013 Oct;22 Suppl 2:ii52-ii57. Epub 2013 Aug 13. Select to access the abstract on PubMed®.

Lynch S, Franke T. Communicating with pediatricians: developing social work practice in primary care. Soc Work Health Care 2013;52(4):397-416. Select to access the abstract on PubMed®.

Srichai MB, Barreto M, Lim RP, et al. Prospective-triggered sequential dual-source end-systolic coronary CT angiography for patients with atrial fibrillation: a feasibility study. J Cardiovasc Comput Tomogr 2013 Mar-Apr;7(2):102-9. Epub 2013 Feb 27. Select to access the abstract on PubMed®.

Vulcano E, Lee YY, Yamany T, et al. Obese patients undergoing total knee arthroplasty have distinct preoperative characteristics: an institutional study of 4718 patients. J Arthroplasty 2013 Aug;28(7):1125-9. Epub 2013 Mar 21. Select to access the abstract on PubMed®.

Contact Information

Please address comments and questions regarding the AHRQ Electronic Newsletter to Jeff Hardy at or (301) 427-1802.

Update your subscriptions, modify your password or email address, or stop subscriptions at any time on your Subscriber Preferences Page. You will need to use your email address to log in.

If you have any questions or problems with the subscription service, email: For other inquiries, Contact Us.

This service is provided to you at no charge by the Agency for Healthcare Research and Quality (AHRQ).

Page last reviewed February 2014
Page originally created February 2014
Internet Citation: AHRQ Releases 2011 Nationwide Emergency Department Sample. Content last reviewed February 2014. Agency for Healthcare Research and Quality, Rockville, MD.

The information on this page is archived and provided for reference purposes only.


AHRQ Advancing Excellence in Health Care