Table 1. Basic demographic characteristics and neuropsychological test results.
| Healthy controls | MCI patients | F(1, 40) | p | η2 | |
|---|---|---|---|---|---|
| Demographic variables | |||||
| Number of subjects (male) | 22 (14) | 20 (12) | - | 0.808 | - |
| Age | 72.3±3.7 | 72.4±3.9 | 0.004 | 0.948 | <0.001 |
| Education level | 9.6±3.3 | 9.0±4.7 | 0.299 | 0.587 | 0.007 |
| GDSSF-K | 3.2±2.0 | 4.9±3.8 | 3.277 | 0.078 | 0.076 |
| Neuropsychological tests | |||||
| MMSE-DS | 28.0±1.6 | 25.9±2.7 | 7.940 | 0.007 | 0.166 |
| K-IADL | 10 (max: 10) | 10 (max: 10) | - | - | - |
| FCSRT (number of immediate recall) | 36.2±5.0 | 27.8±6.6 | 22.117 | <0.001 | 0.356 |
| FCSRT (number of delayed recall) | 13.6±2.3 | 11.5±2.6 | 7.438 | 0.009 | 0.157 |
| DST-F (number of correct answers) | 9.1±1.8 | 8.3±2.7 | 1.417 | 0.241 | 0.034 |
| DST-B (number of correct answers) | 7.3±2.1 | 5.6±1.8 | 7.655 | 0.009 | 0.161 |
| TMT-A (time to completion, seconds) | 66.8±24.0 | 89.6±44.4 | 4.376 | 0.043 | 0.099 |
| TMT-A (number of errors) | 0.4±0.7 | 0.7±1.0 | 1.737 | 0.195 | 0.042 |
| TMT-B (time to completion, seconds) | 127.8±44.3 | 144.3±44.1 | 1.450 | 0.236 | 0.035 |
| TMT-B (number of errors) | 1.0±1.1 | 1.7±1.2 | 3.369 | 0.074 | 0.078 |
Values are means±SD. GDSSF-K: geriatric depression scale short form-Korean version; MMSE-DS: mini-mental state examination-dementia screening; K-IADL: Korean instrumental activities of daily living; FCSRT: free and cued selective reminding test; DST-F: digit span test-forward; DST-B: digit span test-backward; TMT-A: trail making test-A; and TMT-B: trail making test-B.