Table 1.
Demographic characteristics of healthy individuals and patients in the validation study
| Cognitively impaired groups | P value, NC vs. patients | ||||
|---|---|---|---|---|---|
| NC | Mild cognitive impairment | Dementia | Major depression | ||
| Entire sample | |||||
| n | 126 | 80 | 185 | 23 | |
| Female | 50 (40) | 44 (55) | 99 (54) | 12 (52) | 0.008a |
| Age (years) | 75.2 ± 8.8 | 74.9 ± 8.1 | 78.5 ± 6.5 | 67.4 ± 9.6 | n.s.b |
| Education (years) | 12.5 ± 2.7 | 12.2 ± 2.5 | 11.9 ± 2.7 | 12.4 ± 2.7 | n.s.b |
| MMSE | 28.9 ± 1.2 | 27.1 ± 2.2 | 24.2 ± 2.5 | 27.9 ± 1.8 | 0.001b |
| BrainCheck subsample | |||||
| n | 70 | 21 | 86 | 6 | |
| Female | 20 (29) | 12 (57) | 44 (51) | 4 (67) | 0.001a |
| Age (years) | 77.2 ± 8.9 | 75.3 ± 7.5 | 78.4 ± 6.3 | 68.2 ± 11.4 | n.s.b |
| Education (years) | 12.5 ± 2.9 | 11.6 ± 2.1 | 11.7 ± 2.6 | 11.2 ± 1.9 | n.s.b |
| MMSE | 28.6 ± 1.2 | 27.5 ± 1.8 | 24.4 ± 2.5 | 27.0 ± 1.9 | 0.001b |
Data presented as n (%) or mean ± standard deviation. MMSE, Mini-Mental Status Examination; NC, healthy individuals. aChi-square test. b t test.