Table 1.

Demographic information of the subjects.

Group	HC	SMC	EMCI	MCI	LMCI	AD
Number	471	69	123	190	63	90
Age range	51–95	63–89	56–91	55–97	57–88	55–87
Mean age ± STD	72.13 ± 8.40	74.81 ± 5.77	73.50 ± 7.02	73.40 ± 8.34	73.37 ± 7.74	74.02 ± 7.55
Sex (M/F)	183/288	28/41	61/62	98/92	38/25	54/36

HC, healthy control; SMC, significant memory concern; EMCI, early mild cognitive impairment; MCI, mild cognitive impairment; LMCI, late mild cognitive impairment; AD, Alzheimer's disease; M, male; F, female; STD, standard deviation.