Table 1.

Demographic and clinical characteristics of subjects by group

	Mild cognitive impairment group (n = 47)	Healthy comparison group (n = 37)
Age	69 ± 7	67 ± 7
Sex (F/M)	20/27	15/21
Education (in years)	15 ± 3	16 ± 3
Clinical Dementia Rating sum of boxes (CDR-SB)	1.20 ± 0.83***	0
Mini-Mental State Examination (MMSE)	28 ± 2***	29 ± 1
Apolipoprotein E genotyping
2,3	6	3
3,3	24	23
3,4	9	7
4,4	4	3
Delis–Kaplan Executive Function Test, Letter Fluency	37.47 ± 10.94**	44.68 ± 12.51
Delis–Kaplan Executive Function Test, Category Fluency	33.83 ± 9.65**	40.68 ± 8.24
California Verbal Learning Test, total recall trials 1–5	44.17 ± 12.20***	55.22 ± 10.71
California Verbal Learning Test, long delay free recall	8.17 ± 3.92***	11.89 ± 2.98
Brief Visual Memory Test-revised, total recall trials 1–3	15.30 ± 7.84*	18.92 ± 6.09
Brief Visual Memory Test-revised, delayed recall	5.81 ± 3.17**	7.68 ± 2.58

^* P < 0.05.

^** P < 0.01.

^*** P < 0.001.