TABLE 3.

Correlations between trimester-specific concentrations of pregnant women's serum total 25(OH)D, ppBMI, and trimester-specific physical activity and dietary variables¹

	First trimester		Second trimester		Third trimester
	r	r adj	r	r adj	r	r adj
ppBMI	−0.42**	−0.42***	−0.33**	−0.32**	−0.33**	−0.34**
Physical activity, min/d	0.08	0.09	0.38**	0.40**	0.12	0.13
Vitamin D intake from foods	0.13	0.14	0.18	0.13	0.26*	0.27*
Vitamin D intake from supplements	0.53***	0.58***	0.57***	0.59***	0.52***	0.50***
Total intake of vitamin D	0.53***	0.59***	0.60***	0.60***	0.56***	0.55***
Daily servings of milk and alternatives	−0.06	−0.09	0.11	0.06	0.20	0.22*

¹Values are Pearson's r or the coefficient adjusted for season at the time of sampling (r_adj), n = 79. ^*,**,***Significant correlation: *P < 0.05, **P < 0.01, ***P < 0.0001. ppBMI, prepregnancy BMI; 25(OH)D, 25-hydroxyvitamin D.