Table 2.
Baseline characteristics of the populations who completed the neuropsychological tests and MRI scans
| Variable | Neuropsychological Test | MRI Scan | Z/ χ2 | p * |
| (n = 73) | (n = 47) | |||
| Median (range) | Median (range) | |||
| Age | 71.0 (66.0–75.0) | 70.0 (65.0–74.0) | –0.783 | 0.433a |
| Sex, n (%) | 0.573 | 0.449b | ||
| Male | 25 (34.2) | 13 (27.7) | ||
| Female | 48 (65.8) | 34 (72.3) | ||
| Education level, n (%) | 0.948c | |||
| Primary education | 6 (8.2) | 4 (8.5) | ||
| Junior middle education | 21 (28.8) | 11 (23.4) | ||
| Senior middle education | 27 (37.0) | 19 (40.4) | ||
| >Senior middle education | 19 (26.0) | 13 (27.7) | ||
| Marital status, n (%) | – | 0.679c | ||
| Single | 0 (0.0) | 0 (0.0) | ||
| Married | 58 (79.5) | 38 (80.9) | ||
| Divorced | 2 (2.7) | 0 (0.0) | ||
| Widowed | 13 (17.8) | 9 (19.1) | ||
| MoCA | 22.0 (20.0–24.5) | 23.0 (21.0–25.0) | 0.453 | 0.651a |
| MMSE | 27.0 (25.5–28.0) | 27.0 (26.0–28.0) | 0.093 | 0.926a |
| AVLT | ||||
| Immediate-term | 16.0 (13.5–20.0) | 17.0 (14.0–21.0) | 1.078 | 0.281a |
| Long-term | 4.0 (2.0–6.0) | 4.0 (3.0–7.0) | 0.990 | 0.322a |
| Recall-term | 22.0 (19.0–23.0) | 22.0 (20.0–24.0) | 0.850 | 0.395a |
| VFT | 16.0 (14.0–18.5) | 17.0(14.0–19.0) | 0.756 | 0.449a |
| BNT | 22.0 (19.0–24.0) | 22.0 (19.0–24.0) | 0.168 | 0.867a |
| STT | ||||
| STT-A | 62.0 (54.0–80.0) | 60.0 (51.0–75.0) | –1.019 | 0.308a |
| STT-B | 163.0 (140.5–197.5) | 158.0 (136.0–192.0) | –0.742 | 0.458a |
| SDMT | 32.0 (25.0–35.5) | 33.0 (27.0–37.0) | 1.355 | 0.175a |
| ADL | 20.0 (20.0–20.0) | 20.0 (20.0–21.0) | 0.667 | 0.505a |
*Significance level of α= 0.05 (two-tailed); aMann–Whitney U test; bchi-square test; cFisher’s exact probability test; MoCA, Montreal Cognitive Assessment; MMSE, Mini-Mental State Examination; AVLT, Auditory Verbal Learning Test; VFT, Verbal Fluency Test; BNT, Boston Naming Test; STT, Shape Trail Test; SDMT, Symbol Digit Modalities Test; ADL, Activities of Daily Living scale.