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Table 1 Charlson Comorbidity Index conditions and weights

From: Comorbidity, age, race and stage at diagnosis in colorectal cancer: a retrospective, parallel analysis of two health systems

Weight Condition
1 Myocardial infarction, Congestive heart failure, Peripheral vascular disease, Cerebrovascular disease, Dementia, Chronic pulmonary disease, Rheumatologic disease, Peptic ulcer disease, Chronic liver disease (mild), Diabetes (uncomplicated)
2 Hemiplegia, Renal disease (moderate or severe), Diabetes with end organ damage, Solid tumor without metastasis, Leukemia or lymphoma
3 Liver disease (moderate or severe)
6 Metastatic solid tumor, AIDS
  1. Weights are determined by 1-year relative risk of mortality associated with presence of the comorbidity. Comorbidity index per patient is calculated by the addition of weighted scores as determined by the Charlson index [21].