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A comparison of a multistate inpatient EHR database to the HCUP Nationwide Inpatient Sample
Jonathan P DeShazo1, Mark A Hoffman2
1Department of Health Administration, School of Allied Health Professions, Virginia Commonwealth University, Grant House Room 201, 1008 East Clay Street, P.O. Box 980203, Richmond, VA, 23298-0203, USA. jpdeshazo@vcu.edu.
Background:
The growing availability of electronic health records (EHRs) in the US could provide researchers with a more detailed and clinically relevant alternative to using claims-based data.
Methods:
In this study we compared a very large EHR database (Health Facts©) to a well-established population estimate (Nationwide Inpatient Sample). Weighted comparisons were made using t-value and relative difference over diagnoses and procedures for the year 2010.
Results:
The two databases have a similar distribution pattern across all data elements, with 24 of 50 data elements being statistically similar between the two data sources. In general, differences that were found are consistent across diagnosis and procedures categories and were specific to the psychiatric-behavioral and obstetrics-gynecology services areas.
Conclusions:
Large EHR databases have the potential to be a useful addition to health services researchers, although they require different analytic techniques compared to administrative databases; more research is needed to understand the differences.
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