Table III.

Linear regression analysis for predictors of infants’ 25OHD (ng/ml)

Variable	Univariate			Multivariate*
	β (SE)	P value	R2	β (SE)	P value
Vitamin supplement	4.80 (1.65)	0.005	0.082	3.52 (1.45)	0.025
Sunlight exposure	0.006 (0.002)	0.009	0.075	0.008 (0.002)	0.001
Mothers’ 25OHD	0.65 (0.12)	0.0001	0.240	0.61 (0.117)	0.0001

^*R²= 0.43 after adjusting for gestational age and age at sampling