Table 1.

Demographic and neuropsychological characteristics of subjects

Items	HYC (n = 75)	HOC (n = 21)	aMCI (n = 18)	AD (n = 35)
Age (mean ± SD; years)	23.8 ± 4.0	65.0 ± 8.2	70.2 ± 7.9	65.8 ± 8.3
Gender (males/females)	38/37	7/14	10/8	17/18
Years of education (mean ± SD)	11.5 ± 5.5	11.0 ± 4.4	9.4 ± 4.8	10.6 ± 4.2
MMSE (mean ± SD)	—	28.5 ± 1.4	21.9 ± 5.0	10.1 ± 6.7
CDR (range)	—	0	0.5	1–3

AD, Alzheimer's disease; aMCI, amnestic mild cognitive impairment; CDR, Clinical Dementia Rating; HOC, healthy older control; HYC, healthy younger control; MMSE, Mini‐Mental State Examination; SD, standard deviation.