Demographics: samples of subjects with NCI, na-MCI, a-MCI, and probable AD*
| NCI | na-MCI | a-MCI | Probable AD | |
|---|---|---|---|---|
| Sample size | n = 40 | n = 53 | n = 65 | n = 34 |
| Age (SD) | 71.0a (5.6) | 74.2ab (6.1) | 75.3b (6.6) | 76.6b (6.5) |
| Years of education (SD) | 14.6b (3.9) | 11.7a (3.4) | 13.8ab (3.0) | 13.1ab (3.7) |
| % Female | 67.5% | 40.7% | 46.7% | 53.3% |
| MMSE (SD) | 29.3c (.9) | 27.0b (2.4) | 26.8b (2.3) | 22.7a (2.8) |
Note:—NCI indicates no cognitive impairment; na-MCI, nonamnestic mild cognitive impairment; a-MCI, amnestic mild cognitive impairment; AD, Alzheimer disease; MMSE, Mini-Mental State Examination.
* Means with different alphabetic superscripts (a,b,c) are significantly different at P < .05 by the Scheffe post hoc procedure.