. Author manuscript; available in PMC: 2015 Jan 25.

Published in final edited form as: Brain Imaging Behav. 2012 Mar;6(1):16–26. doi: 10.1007/s11682-011-9137-0

Table 1.

Subject characteristics

	Healthy controls (n = 188)	MCI & AD subjects (n = 318)
Age (years)	76.12±5.13	74.91±7.52
Percent female subjects	46%	46%
Education (years)	16.10±2.81^*	15.34±3.01^*
Percent carriers of APOE ε4	28%^*	64%^*
MMSE	29.13±.97^*	25.16±2.49^*
ADAS-cog	6.15±2.85^*	15.38±5.86^*

Data are given as mean±SD unless otherwise specified as a percent.

The MCI and AD subjects had a significantly lower level of education (p = .005), higher frequency of the APOE ε4 allele (p < .001) and significantly more impaired MMSE (p < .001) and ADAS-cog (p < .001) scores at baseline than the healthy controls