Why Summary Comorbidity Measures Such As the Charlson Comorbidity Index and Elixhauser Score Work

Charlson Comorbidity Index

Charlson comorbidity index adjustment in intracerebral hemorrhage.

BACKGROUND AND PURPOSE Previous studies of intracerebral hemorrhage (ICH) outcome prediction models have not systematically included adjustment for comorbid conditions. The purpose of this study was to assess whether the Charlson Comorbidity Index (CCI) was associated with early mortality and long-term functional outcome in patients with intracerebral hemorrhage. METHODS We performed a retros...

Comparing the performance of the Charlson/Deyo and Elixhauser comorbidity measures across five European countries and three conditions.

BACKGROUND The Charlson and Elixhauser comorbidity measures are commonly used methods to account for patient comorbidities in hospital-level comparisons of clinical quality using administrative data. Both have been validated in North America, but there is less evidence of their performance in Europe and in pooled cross-country data, which are features of the European Collaboration for Healthcar...

Charlson Index comorbidity adjustment for ischemic stroke outcome studies.

BACKGROUND AND PURPOSE The Charlson Index is commonly used in outcome studies to adjust for patient comorbid conditions, but has not been specifically validated for use in studies of ischemic stroke. The purpose of the present study was to determine whether outcomes of ischemic stroke patients varied on the basis of the Charlson Index. METHODS The Department of Veterans Affairs (VA) Stroke St...

Modified Charlson comorbidity index for predicting survival after liver transplantation.

The benefit of liver transplantation (LT) is determined not only by the severity of illness, but also by the likelihood of posttransplantation survival. Current models are unable to accurately predict which patients will have the best posttransplant survival. We hypothesized that the Charlson Comorbidity Index (CCI), which includes nine comorbidities, could be used to predict survival after LT....