TABLE 2.

Cohort characteristics of the test group.

Number of subjects	115
Gender (M/F)	36/79
Race (White/Non-White)	99/16
Education (years) ± SD	17 ± 1.9
APOE ε4 status (−/+/unknown)	51/56/8
Age in years at time of PET scan ± SD	59.6 ± 11.5
Age in years at time of CSF ± SD	64.4 ± 9.1
Average time in years between CSF and PET acquisition ± SD	0.35 ± 0.42
MMSE ± SD [Range]	29 ± 0.89 [26–30]