Table 1.
Group Differences in Demographics and Neuropsychological Tests.a
| NC, n = 97 | MCI, n = 86 | AD, n = 89 | P Value | |
|---|---|---|---|---|
| Age, mean (SD) | 75.77 (6.28) | 76.67 (7.45) | 75.52 (7.36) | .606 |
| Gender (male/female) | 42/55 | 36/50 | 33/56 | .173 |
| MMSE,b means (SD) | 28.97 (1.24) | 27.08 (1.70) | 20.69 (3.70) | <.001 |
| CDRb score (%) | <.001 | |||
| 0 | 100 | 0 | 0 | |
| 0.5 | 0 | 100 | 25.8 | |
| 1 | 0 | 0 | 50.6 | |
| 2 | 0 | 0 | 23.6 | |
Abbreviation: AD, Alzheimer’s disease; CDR, Clinical Dementia Rating Scale; MCI, mild cognitive impairment; MMSE, Mini-Mental State Examination; NC, normal control; SD, standard deviation.
aAge, Gender, MMSE, and CDR differences among the 3 groups were analyzed by analysis of variance (ANOVA) with Bonferroni-corrected post hoc t tests.
bStatistically significant difference in each pair of groups at P < .001.