Table 1. Demographic data and cognitive scores of subjects.

Group	Number	Male/female	Age (years), mean ± SD (range)	MMSE	CDR
NC	150	80/70	75.61±5.47 (59.9–89.6)	29.29±0.89 (26–30)	0.00±0.10 (0–0.5)
sMCI	150	109/41	75.32±7.82 (54.4–89.3)	27.35±1.79 (24–30)	1.40±0.73 (0.5–4)
cMCI	157	106/51	75.29±6.74 (55.2–88.3)	26.47±1.75 (20–30)	1.78±1.08 (0.5–5)

MMSE, mini-mental state examination; CDR, clinical dementia rating.