Table 1.

Subject Demographics

	Age	Sex (% female)	Aβ+	E4+	BMI
PK Control (n = 43)	55.0 (23–78; sd 15.9)	44% F	Not assessed	Not assessed	26.7 (18.6–37.5, sd 4.3)
PBR28 Control (n = 20)	73.4 (65.3–85.7; sd 5.5)	75% F	2 (10%)	4 (20%)	25.8 (17.3–32.8, sd 3.7)
PBR28 AD (n = 8)	71.0 (57.1–78.6; sd 7.8)	62.5% F	8 (100%)	2 (25%)	24.5 (17.2–31.0, sd 4.5)