Table 1. Demographic information and cognitive scores of subjects.

Group	Subjects	Male/female (P=0.048)	Age (P=0.7560)	MMSE (P=1.7e-53)	CDR (P=4.4e-33)
NC	109	59/50	75.44±5.20 [59.9–89.6]	29.26±0.90 [26–30]	0.02±0.10 [0–0.5]
sMCI	102	72/30	75.13±7.33 [56.2–87.8]	27.86±1.51 [24–30]	1.26±0.61 [0.5–3]
cMCI	111	42/69	74.86±6.93 [55.3–88.4]	26.54±1.64 [23–30]	1.86±1.00 [0.5–5]

MMSE, minimum mental state examination; CDR, clinical dementia rating; sMCI, stable mild cognitive impairment; cMCI, converted mild cognitive impairment; NC, normal control.