Table 2.

Secondary analyses of BMI and PiB retention.

Dependent Variable: PiB PET		β	P-value
Model 1*	Normal: BMI	−0.253	0.01
	Overweight: BMI	−0.154	0.08
	Obese: BMI	−0.098	0.47
Model 2	APOE4 carrier: BMI	−0.267	0.02
	APOE4 non-carrier: BMI	−0.074	0.33
Model 3	BMI	−0.054	0.45
	APOE4 carrier	0.381	<0.001
	BMI × APOE4 interaction term	−0.142	0.04

All models are adjusted for age, sex, and years of education.

^*Model 1 is also adjusted for APOE4 carrier status.

APOE4 (apolipoprotein ɛ4), BMI (body-mass index), PET (positron emission tomography), PiB (Pittsburgh Compound B).