Table 1.

Demographics of the AD subjects that were included in the analyses (note: the PET subjects represent a subgroup of the MRI subjects; MMSE: Mini-mental state examination; ACE-r: Addenbrooke's Cognitive Examination-revised).

	MRI subjects	PET subjects
	Mean ± SD (range)	Mean ± SD (range)
N (sex)	30 (17M:13F)	26 (15M:11)
Age, yrs	69.2 ± 5.4 (59–78)	68.8 ± 5.6 (59–78)
Education, yrs	13.8 ± 3.0 (10–19)	13.8 ± 3.1 (10–19)
MMSE	24.6 ± 2.6 (18–28)	24.5 ± 2.6 (18–28)
ACE-r	74.2 ± 10.5 (55–88)	74.3 ± 10.2 (55–88)
VRLT error score	14.5 ± 5.3 (3–23)	14.5 ± 5.1 (3–23)