Table 1.

Clinical and demographic characteristics of the study sample

Women, n (%)	137 (59.3)
Age, mean (SD), year	79.9 (5.7)
Education, mean (SD), year	10.6 (4.9)
Ethnic group, n (%) †
White/Non-Hispanic	62 (26.8)
Black/Non-Hispanic	88 (38.1)
Hispanic	81 (35.1)
APOE genotype 4/- or 4/4, n (%)	61 (26.4)
Dementia, n (%)	17 (7.4)
MCI, n (%)
No	162 (70.1)
Non-amnestic	22 (9.5)
amnestic	30 (13.0)
Hippocampus Volume, mean (SD)	0.29 (0.06)
Hippocampus CBV, mean (SD)	0.05 (0.02)
Entorhinal Cortex volume, mean (SD)	0.09 (0.03)
Entorhinal Cortex CBV, mean (SD)	0.02 (0.01)

Some percentages are based on an incomplete sample due to small amounts of missing data.

^†Classified by self-report using the format of the 1990 US census. CBV = cerebral blood volume