. 2022 Aug 8;16:970245. doi: 10.3389/fnins.2022.970245

TABLE 1.

Demographic data and clinical characteristics of the participants.

Sample size	AD (N = 84)	aMCI (N = 50)	NC (N = 44)	Statistic	P-value
Gender (male: female)	37:47	27:23	21:23	1.244	0.537^a
Age (years, mean ± SD)	69.226 ± 9.303	65.840 ± 11.171	65.477 ± 9.690	2.847	0.061^b
Education (years, mean ± SD)	7.167 ± 4.412	7.120 ± 4.059	7.114 ± 3.356	0.003	0.997^b
MMSE	17.512 ± 5.084	26.200 ± 0.881	29.023 ± 0.902	182.686	<0.001^b

^ap-values for sex distribution obtained by the chi-square test; ^bp-value obtained by analysis of variance. AD, Alzheimer’s disease; aMCI, amnestic mild cognitive impairment; NCs, normal controls.