CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne
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Comparative Study
A disease-specific comorbidity index for predicting mortality in patients admitted to hospital with a cardiac condition.
Comorbidity indexes derived from administrative databases are essential tools of research in global health. We sought to develop and validate a novel cardiac-specific comorbidity index, and to compare its accuracy with the generic Charlson-Deyo and Elixhauser comorbidity indexes. ⋯ The cardiac-specific comorbidity index predicted in-hospital and 1-year death and length of stay in cardiovascular populations better than existing generic models. This novel index may be useful for research of cardiology outcomes performed with large administrative databases.