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First published June 4, 2003 as JAMIA PrePrint; doi:10.1197/jamia.M1299
Journal of the American Medical Informatics Association 2003;10(5):454-462
© 2003 American Medical Informatics Association

A more recent version of this article appeared on September 1, 2003
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Submitted on November 27, 2002
Accepted on April 19, 2003

Development of a Clinical Data Warehouse for Hospital Infection Control

Mary F. Wisniewski MSN1*, Piotr Kieszkowski BS1, Brandon M. Zagorski MS1, William E. Trick MD2, Michael Sommers BA3, and Robert A. Weinstein MD4

Affiliation of the authors: 1 Department of Medicine, Cook County Hospital, Chicago, IL; 2 Division of Healthcare Quality Promotion, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA; 3 Department of Hospital Information Services, Cook County Bureau of Health Services, Chicago, IL; 4 Department of Medicine, Cook County Hospital, Chicago, IL; Rush Medical College, Chicago, IL

* To whom correspondence should be addressed.

Existing data stored in a hospital's transactional servers have enormous potential to improve performance measurement and healthcare quality. Accessing, organizing and using these data to support research and quality improvement projects are evolving challenges for hospital systems. We report development of a clinical data warehouse that we created by importing data from the information systems of three affiliated public hospitals. We describe our methodology; difficulties encountered; responses from administrators, computer specialists, and clinicians; and the steps taken to capture and store patient-level data. We provide examples of our use of the clinical data warehouse to monitor antimicrobial resistance, to measure antimicrobial use, to detect hospital-acquired bloodstream infections, to measure the cost of infections, and to detect antimicrobial prescribing errors. In addition, we estimate the amount of time and money saved, and the increased precision achieved through the practical application of our data warehouse.




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