Table 1.

Baseline characteristics for controls and AD subjects. Values represent mean (standard deviation [SD]) except for gender and APOE ε4 carrier status for which values are number (percent)

	AD (n = 18)	Control (n = 18)
Age at baseline 1.5T scan (years)	74.7 (8.1)	74.4 (4.9)
Age at baseline 3T scan (years)	74.8 (8.1)	74.5 (4.9)
1.5T scan interval (years)	1.05 (0.05)	1.07 (0.05)
3T scan interval (years)	1.01 (0.06)	1.01 (0.04)
Male	6 (33.3)	7 (38.9)
APOE ε4 carrier	11 (61.1)	7 (38.9)
MMSE (score out of 30)	23.0 (2.1)	29.4 (0.7)