Table 1. Baseline demographic and clinical characteristics of the subjects .
| Variables | Control (n = 50) | Case (n = 50) | Total (n = 100) | p | |
| Age (mean ± SD; year) | 77.72 ± 8.41 | 77.06 ± 7.94 | 77.39 ± 8.14 | 0.69 | |
| Sex (n, %) | Male | 28 (56.0) | 21 (42.0) | 49 (49.0) | 0.16 |
| Female | 22 (44.0) | 29 (58.0) | 51 (51.0) | ||
| Body mass index (n, %; kg/m2) | Normal | 26 (52.0) | 28 (56.0) | 54 (54.0) | 0.69 |
| Overweight | 24 (48.0) | 22 (44.0) | 46 (46.0) | ||
| MMSE score (n, %) | 26 | 23 (46.0) | 17 (34.0) | 40 (40.0) | 0.37 |
| 27 | 9 (18.0) | 11 (22.0) | 20 (20) | ||
| 28 | 6 (12.0) | 7 (14.0) | 13 (13.0) | ||
| 29 | 8 (16.0) | 14 (28.0) | 22 (22.0) | ||
| 30 | 4 (8.0) | 1 (2.0) | 5 (5.0) |
n: Number of participants; SD: Standard deviation; MMSE: Mini-mental State Examination