Table 2.
Cognitive performance for NC, MCI, and AD.
| Tests | NC | aMCI | AD | P* |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| MMSE | 28.36 (1.48) | 25.79 (2.74) | 23.96 (2.90) | <0.01a |
| Vocabulary | 26.46 (9.81) | 22.81 (9.38) | 23.20 (9.16) | 0.146 |
| BD | 25.43 (8.93) | 18.39 (8.53) | 14.18 (6.53) | <0.01b |
| RCM | 25.84 (6.23) | 20.47 (6.31) | 17.76 (5.99) | <0.01b |
| Estimated IQ | 98.77 (10.41) | 91.08 (10.13) | 87.95 (8.92) | <0.01b |
Note. P value refers to Kruskal-Wallis test; SD: standard deviation; MCI: mild cognitive impairment; AD: Alzheimer's disease; MMSE: Mini-Mental State Exam; IQ: intelligence quotient; BD: Block Design; RCM: Raven Colored Matrices.
aAll groups differ.
bNC differ from AD and aMCI; MCI is equal to AD.