Comparison of the Elixhauser and Charlson/Deyo Methods of Comorbidity Measurement in Administrative Data

Background: Comorbidity risk adjustment methods have been used widely with administrative data, and the Charlson/Deyo method is perhaps the most commonly used in the literature. However, a new method defined by Elixhauser et al. has been introduced recently and could be superior, although it has not been validated widely. Objectives: We compared the Charlson/Deyo and Elixhauser methods using Canadian administrative data on patients with...