Table 1.
Subject’s information. Characteristics given as mean ± standard deviation
| Control group ( n = 32) | MCI group ( n = 37) | p values | ||
|---|---|---|---|---|
| Age (years) | 71.8 ± 3.8 | 72.5 ± 4.5 | 0.50 | |
| Sex (M/F) | 10/22 | 18/20 | 0.22 | |
| Educational level | 3.8 ± 1.1 | 3.3 ± 1.3 | 0.12 | |
| MMSE score (points) | 29.3 ± 0.9 | 27.1 ± 2.2 | 3.9 × 10−5 | |
| Volume ratio: hippocampus/intracranial | (5.09 ± 0.62) × 10−3 | (4.17 ± 0.89) × 10−3 | 9.8 × 10−5 | |
| Number of clean 4-s segments | Resting | (27.6 ± 6.5) | (27.9 ± 5.6) | 0.83 |
| 1-subraction | (22.5 ± 6.8) | (21.7 ± 8.2) | 0.55 | |
| 3-subtraction | (21.2 ± 5.6) | (21.9 ± 8.2) | 0.94 | |
Educational level was grouped into five levels: 1. Illiterate, 2. Primary studies, 3. Elemental studies, 4. High school studies, and 5. University studies. p values for between-group differences were introduced. Wilcoxon-Mann-Whitney test was used for continuous variables (age, educational level, MMSE, volume ratios) and Fisher’s exact test for sex differences
M males, F females, MMSE Mini Mental State Examination score