This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.

Abstract Details

Activity Number: 292
Type: Topic Contributed
Date/Time: Tuesday, August 3, 2010 : 8:30 AM to 10:20 AM
Sponsor: Health Policy Statistics Section
Abstract - #307457
Title: Estimating Total Emergency Department Visits: A Comparison of Two Data Sources
Author(s): Ryan Mutter+ and Steven Machlin* and Pamela Owens
Companies: AHRQ and AHRQ and AHRQ
Address: 540 Gaither Road, Rockville, MD, 20850,
Keywords: HCUP ; AHA Annual Survey ; hospital utilization

Different methodologies exist for the collection of emergency department (ED) data, and these differences can produce varying estimates of ED utilization. For example, survey data are affected by factors like the sampling frame used, response rate, and question format, while administrative data obtained from patient encounter bills are subject to variations in billing practices. In this analysis we compare estimates of ED utilization in 2007 from the American Hospital Association (AHA) Annual Survey of Hospitals and the Healthcare Cost and Utilization Project (HCUP), which is administrative data based on patient encounter bills. For the 27 States included in the analysis, we find fairly broad concordance between estimates at the total and State levels and identify several hospital characteristics associated with differences at the institutional level.

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