Original articleSearching for an improved clinical comorbidity index for use with ICD-9-CM administrative data☆
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Keywords
Comorbidity
case mix
risk adjustment
severity of illness
coronary artery bypass surgery
clinical index
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This work was supported by Elliot M. Stone and staff at the Massachusetts Health Data Consortium, and by a grant from the Walnut Medical Charitable Trust.
Copyright © 1996 Published by Elsevier Inc.