| Variables | IG (n = 321) | CG (n = 164) |
| Age [mean (SD)] | 66.8 (15.4) | 65.7 (16.3) |
| Gender (Male) [n (%)] | 119 (38.1) | 56 (34.4) |
| Number of taken drug [mean (SD)] | 6.2 (3.8) | 5.6 (3.8) |
| Number of complicating disease [mean (SD)] | 1.8 (1.0) | 1.9 (1.0) |
| Diseases (multiple choice) [n (%)] | ||
| Hypertension | 103 (32.1) | 59 (36.0) |
| Hyperlipidemia | 68 (21.2) | 34 (20.7) |
| Diabetes | 39 (12.1) | 22 (13.4) |
| Cardiac disorder | 26 (8.1) | 17 (10.4) |
| Cerebrovascular disorder | 11 (3.4) | 6 (3.7) |
| Digestive disorder | 37 (11.5) | 23 (14.0) |
| Chronic pain | 42 (13.1) | 13 (7.9) |
| Osteoporosis | 21 (6.5) | 20 (12.2) |
| Sleep disorder | 23 (7.2) | 16 (9.8) |
| Psychiatric disorder | 19 (5.9) | 11 (6.7) |
| Respiratory disorder | 22 (6.9) | 10 (6.1) |
| Urinary organ disorder | 10 (3.1) | 3 (1.8) |
| Cutaneous disorder | 12 (3.7) | 3 (1.8) |
| Renal disorder | 8 (2.5) | 1 (0.6) |
| Others | 67 (20.9) | 23 (14.0) |