Table 1.
Demographic and clinical information: means and standard deviations
| non-MCI (n = 33) |
aMCI (n = 15) |
mixed/dys MCI (n = 18) |
significance | |
|---|---|---|---|---|
| Age | 77.27 (6.26) | 76.20 (6.48) | 77.88 (5.46) | ns |
| Education | 14.63 (3.00) | 14.20 (2.67) | 13.50 (2.95) | ns |
| MMSE | 27.69 (1.75) | 26.73 (2.21) | 26.44 (1.58) | ns |
| WRAT-IV Reading subtest | 116.30 (18.60) | 116.46 (13.37) | 110.61 (16.39) | ns |
| IADL abilities | 14.90 (2.44) | 13.38 (3.52) | 14.23 (2.70) | ns |
| Geriatric Depression Scale | 3.63 (2.52) | 3.06 (2.71) | 4.11 (3.12) | ns |
| Executive Index (z-scores) |
–0.12 (0.36) | –0.37 (0.49) | –1.02 (0.77) | mixed/dys MCI < non-MCI; p < 0.001 mixed/dys MCI < aMCI; p < 0.003 |
| Naming/Lexical access Index (z-scores) |
–0.10 (0.50) | –0.27 (0.60) | –0.91 (0.91) | mixed/dys MCI < non-MCI; p < 0.001 mixed/dys MCI < aMCI; p < 0.021 |
| Memory Index (z-scores) |
–0.04 (0.67) | –1.48 (0.49) | –0.71 (0.78) | aMCI < non-MCI; p < 0.001 aMCI < mixed/dys MCI; p < 0.005 mixed/dys MCI < non-MCI; p < 0.003 |
aMCI, amnestic mild cognitive impairment; mixed/dys MCI, multi-domain/dysexecutive mild cognitive impairment; IADL, instrumental activities of daily living; WRAT-IV, Wide Range Achievement Test-IV; ns, not significant.