Table 1.
Demographic characteristics
| aMCI (n = 91) | Control (n = 80) | Group comparison (p) | |||
| Mean (SD) | Range | Mean (SD) | Range | ||
| Age | 68.9 (5.9) | 51–83 | 68.1 (3.9) | 61–79 | U = 3289.5 (0.28) |
| Sex Female, n (%) | 35 (38.5) | 32 (40) | χ2 = 0.04 (0.84) | ||
| Education category, n (%) | χ2 = 1.27 (0.53) | ||||
| Low | 64 (70.3) | 50 (62.5) | |||
| Middle | 11 (12.1) | 11 (13.7) | |||
| High | 16 (17.6) | 19 (23.8) | |||
| MMSE | 27.6 (2.2) | 22–30 | 29 (1.1) | 26–30 | U = 2115 (<0.001)* |
| GDS-30 | 3.5 (5.4) | 0–25 | 1.2 (2.1) | 0–12 | U = 2716.5 (0.003)* |
| TMT A | 46.5 (22.5) | 20–147 | 38.2 (14.3) | 15–94 | U = 2660.5 (0.003)* |
| TMT B | 134.3 (72.4) | 40–539 | 103.7 (54.6) | 39–360 | U = 2450 (<0.001)* |
Group comparisons were performed with Mann-Whitney U-test for age, MMSE, GDS-30, TMT A, TMT B, and Pearson’s chi-square tests for sex and educational level. aMCI, amnestic Mild Cognitive Impairment; MMSE, Mini-Mental State Examination; GDS, Geriatric Depression Scale; TMT A and B, Trail Making Test (forms A and B) in seconds. *p < 0.05.