Table 2

Hierarchical linear regression model for predicting neonatal 25(OH)D concentrations
DV: Neonatal 25(OHD)2 DV: Neonatal 25(OH)D3
Step IV (Maternal) R2 ΔR2 SD β R2 ΔR2 SD β
1 UVB exposure -0.243 -0.121
Age -0.343 * -0.227 *
Adjusted BMI -0.172 0.032
Vitamin D intake 0.082 0.143
Ca intake 0.207 0.207 * 0.222 0.096 0.096 -0.018
2 Serum PTH 0.043 0.046
Serum Ca -0.267 0.169
Serum P 0.253 0.046 -0.011 0.109 0.013 -0.161
3 25(OH)D2 0.254 0.002 0.040 0.267 0.158 ** 0.271*
4 25(OH)D3 0.302 0.048 0.272 0.438 0.171 *** 0.218
5 Epi-25(OH)D2 0.303 0.000 0.124 0.518 0.080 ** -0.091
6 Epi-25(OH)D3 0.309 0.006 -0.179 0.586 0.068** 0.596 **
7 1α,25(OH)2D3 0.329 0.020 -0.147 0.587 0.001 0.032

* p < 0.05; ** p < 0.01, *** p < 0.001. BMI: body mass index, Ca: calcium, DV: dependent variable, IV: independent variable, P: phosphorus, PTH: parathyroid hormone, SD: standard deviation, UVB: ultraviolet B.

Karras et al.

Karras et al. Nutrition Journal 2013 12:77   doi:10.1186/1475-2891-12-77

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