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Weighted comorbidity categories.
| Category | Weight |
|---|---|
| Myocardial infarction | 1 |
| Congestive heart failure | 1 |
| Peripheral vascular disease | 1 |
| Cerebrovascular disease | 1 |
| Dementia | 1 |
| Rheumatologic disease | 1 |
| Chronic pulmonary disease | 1 |
| Peptic ulcer disease | 1 |
| Mild liver disease | 1 |
| Diabetes (mild to moderate) | 1 |
| Diabetes with chronic complications | 2 |
| Hemiplegia or paraplegia | 2 |
| Renal disease | 2 |
| Any malignancy, including lymphoma and leukemia | 2 |
| Moderate or severe liver disease | 3 |
| Metastatic solid tumor | 6 |
| AIDS | 6 |
