Table 2.

Charlson comorbidity index

Age	> 80 years (= 4 points)
Item	Yes	No
Myocardial infarction History of definite or probable MI (EKG changes and/or enzyme changes)		0
Congestive heart failure Exertional or paroxysmal nocturnal dyspnea and has responded to digitalis, diuretics, or afterload reducing agents		0
Peripheral vascular disease Intermittent claudication or past bypass for chronic arterial insufficiency, history of gangrene or acute arterial insufficiency, or untreated thoracic or abdominal aneurysm (≥ 6 cm)		0
Cerebrovascular accident or transient ischemic attack		0
Dementia Chronic cognitive deficit		0
Chronic obstructive pulmonary disease		0
Connective tissue disease		0
Peptic ulcer disease Any history of treatment for ulcer disease or history of ulcer bleeding		0
Liver disease Severe = cirrhosis and portal hypertension with variceal bleeding history, moderate = cirrhosis and portal hypertension but no variceal bleeding history, mild = chronic hepatitis (or cirrhosis without portal hypertension)		0
Diabetes mellitus		0
Hemiplegia		0
Moderate to severe chronic kidney disease Severe = on dialysis, status post kidney transplant, uremia, moderate = creatinine > 3 mg/dL (0.27 mmol/L)		0
Solid tumor		0
Leukemia		0
Lymphoma		0
AIDS		0

Charlson comorbidity index score = 4