Female | 118 (80) | 118 (80) | 1.00 |
Age, yrs, mean ± SD | 77.2 ± 8.2 | 76.9 ± 8.5 | 0.85 |
Comorbidity type† | | | |
Myocardial infarction | 18 (12) | 29 (20) | 0.08 |
Congestive heart failure | 40 (27) | 43 (29) | 0.70 |
Peripheral vascular disease | 61 (41) | 38 (26) | 0.005 |
Cerebrovascular disease | 62 (42) | 48 (33) | 0.09 |
Dementia | 23 (16) | 27 (18) | 0.53 |
Chronic pulmonary disease | 53 (36) | 60 (41) | 0.40 |
Peptic ulcer | 35 (24) | 23 (16) | 0.08 |
Diabetes mellitus | 27 (18) | 35 (24) | 0.25 |
Hemiplegia | 5 (3) | 7 (5) | 0.56 |
Moderate/severe renal disease | 26 (18) | 30 (20) | 0.55 |
Liver disease | 10 (7) | 15 (10) | 0.30 |
Any cancer | 70 (48) | 76 (52) | 0.48 |
Charlson Comorbidity Index*, mean ± SD | 4.4 ± 3.8 | 4.4 ± 3.7 | 0.73 |