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First published January 9, 2007 as JAMIA PrePrint; doi:10.1197/jamia.M2206
Journal of the American Medical Informatics Association 2007;14(2):235-238
© 2007 American Medical Informatics Association

A more recent version of this article appeared on March 1, 2007
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Submitted on July 12, 2006
Accepted on December 12, 2006

Emergency Department Access to a Longitudinal Medical Record

George Hripcsak MD, MS1*, Soumitra Sengupta PhD1, Adam Wilcox PhD1, and Robert A. Green MD2

Affiliation of the authors: 1 Department of Biomedical Informatics, Columbia University, New York ; 2 Department of Emergency Medicine, NewYork-Presbyterian Hospital and Columbia University, New York

* To whom correspondence should be addressed.

Our goal is to assess how clinical information from previous visits is used in the emergency department. We used detailed user audit logs to measure access to different data types. We found that clinician-authored notes and laboratory and radiology data were used most often (common data types were used up to 5 to 20% of the time). Data were accessed less than half the time (up to 20 to 50%) even when the user was alerted of the presence of data. Our access rate indicates that health information exchange projects should be conservative in estimating how often shared data will be used, and the wide breadth of data accessed indicates that although a clinical summary is likely to be useful, an ideal solution will supply a broad variety of data.




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