TABLE 2.

Final linear regression model with significant main effects¹

	Imputed data (n = 492)		Complete data (n = 430)
Variable	Values	P	Values	P
For calcium absorption
Menopause status2	−0.471 ± 0.107	<0.001	−0.501 ± 0.111	<0.001
Calcium intake (mg)	−0.129 ± 0.046	0.005	−0.146 ± 0.050	0.004
Serum estradiol (pg/mL)	0.130 ± 0.052	0.012	0.120 ± 0.056	0.035
1,25(OH)2D (pmol/L)	0.147 ± 0.042	<0.001	0.133 ± 0.044	0.003
For PTH
BMI	0.240 ± 0.044	<0.001	0.248 ± 0.048	<0.001
25(OH)D (nmol/L)	−0.093 ± 0.044	0.035	−0.090 ± 0.050	0.074
1,25(OH)2D (pmol/L)	0.121 ± 0.043	0.005	0.123 ± 0.045	0.006
For 1,25(OH)2D
PTH (pg/mL)	0.125 ± 0.044	0.005	0.135 ± 0.045	0.003
Calcium absorption (%)	0.134 ± 0.044	0.003	0.123 ± 0.046	0.008
Serum creatinine (mg/dL)	−0.105 ± 0.044	0.018	−0.103 ± 0.046	0.025
Bone mineral density (g/cm2)	−0.184 ± 0.053	0.001	−0.185 ± 0.054	0.001
Race3	−0.443 ± 0.106	<0.001	−0.473 ± 0.111	<0.001

¹All values are estimates ± SEs. PTH, parathyroid hormone; 1,25(OH)₂D, 1,25-dihydroxyvitamin D; 25(OH)D, 25-hydroxyvitamin D.

²Premenopausal was coded 0, and postmenopausal was coded 1.

³Black race was coded 0, and white race was coded 1.