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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Bone. 2015 Jul 9;81:138–144. doi: 10.1016/j.bone.2015.07.011

Table 4.

VDR polymorphisms predict variation in FCA change1,2

Variable β coefficient R2 P value
BsmI −0.229 4.3% 0.006
Weight 0.155 2.4% 0.041
Vitamin D intake 0.302 9.5% <0.001
Model R2 = 16.2%
BAt −0.207 3.3% 0.004
Weight 0.158 2.4% 0.012
Vitamin D intake 0.294 9.5% <0.001
Model R2 = 15.2%
1

BsmI genotype or BAt haplotype recessive models include independent predictors (Fat intake, vitamin D intake, body weight, serum PTH, 25OHD, 1,25D, and estradiol). Only significant predictors are included in the table. Abbreviations: VDR vitamin D receptor gene, FCA true fractional calcium absorption

2

A separate analysis was conducted for the WL and WM groups. In both the WL and WM group the BsmI recessive model remained a significant predictor of calcium absorption change (β = −0.229,−0.255 respectively, p <0.05). The BAt recessive model was only a significant predictor of calcium absorption change in the WL group (β = −0.210, p <0.05).