TABLE 1.

The demographic information of subjects.

Mean ± SD	NC	sMCI	pMCI	AD
Count (F/M)	200 (93/107)	205 (90/115)	110 (47/63)	102 (35/67)
Age	73.9 ± 6.0	71.8 ± 7.1	73.9 ± 7.2	75.7 ± 8.0
Education	16.4 ± 2.7	16.1 ± 2.7	16.2 ± 2.7	15.4 ± 3.0
MMSE	29.0 ± 1.2	28.1 ± 1.7	27.1 ± 1.7	23.2 ± 2.0

In cells of the second row, the first number is total number with numbers of female (F) and male (M) in brackets. AD, Alzheimer’s disease; MMSE, Mini Mental State Examination; NC, normal control; pMCI, progressive mild cognitive impairment; SD, standard deviation; sMCI, stable mild cognitive impairment.