Table 4.

Factors associated with FGF-23: univariate and multivariate regression analyses using FGF-23 as the dependent variable

Independent VariablesM3M12
β coefficientPR2β coefficientPR2
Univariate models
    FGF-23pre0.28<0.00010.420.160.0030.19
    Albumin-corrected calcium0.50.0020.190.430.020.11
    PTH0.350.0070.140.170.070.07
    Calcitriol−0.0110.030.11−0.0180.0040.19
    eGFR−0.0260.0070.14−0.0270.00060.23
Multivariate
    FGF-23pre0.23<0.00010.140.003
    Calcitriol−0.010.003--
    PTH0.270.008--
    Albumin-corrected calcium0.290.015--
    eGFR--−0.0250.0008
    Overall model<0.00010.65<0.00010.37
  • Parameters included in the model: FGF-23pre, serum albumin-corrected calcium, phosphorus, PTH, calcidiol, calcitriol alkaline phosphatases, and eGFR. PTH and FGF-23 were Ln-transformed for regression analyses. Only parameters univariately associated at P ≤ 0.2 for at least one time point are mentioned in the table.