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Table 2 Hierarchical linear regression model for predicting neonatal 25(OH)D concentrations

From: An observational study reveals that neonatal vitamin D is primarily determined by maternal contributions: implications of a new assay on the roles of vitamin D forms

   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
  1. * 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.