Utility of the Charlson Comorbidity Index Computed from Routinely Collected Hospital Discharge Diagnosis Codes
- 1 January 2000
- journal article
- research article
- Published by Georg Thieme Verlag KG in Methods of Information in Medicine
- Vol. 39 (01) , 7-11
- https://doi.org/10.1055/s-0038-1634260
Abstract
This study aims to determine whether the Charlson comorbidity index computed from ICD-9-CM discharge diagnosis codes adds additional information to a model containing adjustment for more informed patient details (e.g., disease severity and history), besides solely age and sex, when predicting long-term survival. We conducted a retrospective cohort study of patients admitted to hospital for suspected acute myocardial infarction. Index scores were calculated by applying the D’Hoore et al. algorithm (1993). The index significantly improved the model fit (likelihood ratio test: p <0.001). The D’Hoore-adapted Charlson index is a useful comorbidity risk adjustment tool when applied to AMI and angina patients.Keywords
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