Table 1.

Demographic data for the sample.

	CG=28 (CDR=0) Mean (SD)	MCI=27 (CDR=0.5) Mean (SD)	AD=32 (CDR=1.0) Mean (SD)	P (two-tailed) Multiple comparison
	69.7 (6.6)	72.7 (6.8)	76.3 (6.7)	0.001 CG × AD
Gender (F/M)**	6 / 22	12 / 15	10 / 22	p>0.05
Education (Y)*	12.8 (5.1)	8.0 (4.9)	7.1 (4.1)	<0.001 CG × AD (<0.001) & CG × MCI (p =0.001)
MMSE*	29.0 (1.0)	27.2 (2.1)	22.9 (3.4)	<0.001

CG × AD (<0.001); MCI × AD (p<0.001) & CG × MCI (p =0.031).

^*ANOVA (Post-hoc test: Bonferroni);

^**Chi-Square; AD: Alzheimer's disease; CG: control group; F: female; M: male; MCI: Mild cognitive impairment; MMSE: Mini-Mental State Examination; SD: Standard deviation; Y: Years.