Table 1.
Sociodemographic and clinical status characteristics for EHC, MCI, and AD
| Variables | Groups |
Statistics |
Post hoc tests |
||||||
|---|---|---|---|---|---|---|---|---|---|
| EHCN = 124 | MCI N = 48 | AD N = 57 | Test | df | P value | EHC vs. MCI | EHC vs. AD | MCI vs. AD | |
| Age Mean (SD) | 73.17 (8.60) | 76.68 (10.27) | 76.58 (10.31) | F = 3.84 | 2, 226 | .02 | P = .07 | P = .06 | P = 1.00 |
| Gender M/F | 49/75 | 27/21 | 27/30 | χ2 = 4.09 | 2 | .13 | |||
| Education Mean (SD) | 16.33 (2.69) | 15.94 (2.86) | 14.10 (3.34) | F = 11.63 | 2, 222 | <.0001 | P = .70 | P < .0001 | P = .004 |
| CDR-SB Mean (SD) | 0.77 (0.98) | 2.64 (1.07) | 4.48 (1.88) | F = 28.05 | 2, 67 | <.0001 | P = .003 | P < .0001 | P < .0001 |
| MMSE Mean (SD) | 28.49 (1.40) | 25.96 (2.03) | 21.21 (4.28) | F = 159.93 | 2, 226 | <.0001 | P < .0001 | P < .0001 | P < .0001 |
Abbreviations: EHC, elderly healthy controls; MCI, mild cognitive impairment; AD, Alzheimer's disease; df, degrees of freedom; SD, standard deviation; M, male; F, female; CDR-SB, Clinical Dementia Rating–Sum of Boxes.