Table 3. Association of BMD z score at different skeletal sites (dependent variable) with predictors in adopted children.

Predictors	Z score spine		Z score total femur		Z score radius
	b	P	b	P	b	P
Age	−0.068	n.s.	−0.136	<0.001	−0.204	<0.001
Sex	0.079	0.025	−0.013	n.s.	−0.447	<0.001
BMI	0.045	n.s.	0.058	n.s.	0.006	n.s.
PAI	0.039	n.s.	0.172	<0.001	0.226	<0.001
Calcium intake	0.101	0.001	0.183	<0.001	0.562	<0.001
Parent Z score spine	−0.106	0.002
Parent Z score total femur			−0.208	<0.001
Parent Z score radius					0.002	n.s.

BMI = body mass index; PAI = physical activity index; b = standardized regression coefficient.