Table 5.
Factors associated with PTH: univariate and multivariate regression analyses using PTH as the dependent variable
| Independent Variables | M3
|
M12
|
||||
|---|---|---|---|---|---|---|
| β coefficient | P | R2 | β coefficient | P | R2 | |
| Univariate models | ||||||
| PTHpre | 0.44 | <0.0001 | 0.28 | 0.37 | 0.04 | 0.09 |
| Phosphorus | −0.38 | 0.09 | 0.06 | −0.33 | 0.26 | 0.03 |
| Albumin-corrected calcium | 0.5 | 0.004 | 0.16 | 0.49 | 0.18 | 0.04 |
| FGF-23 | 0.4 | 0.007 | 0.14 | 0.39 | 0.07 | 0.07 |
| Calcitriol | 0.009 | 0.1 | 0.06 | 0.0014 | 0.92 | 0 |
| eGFR | −0.022 | 0.03 | 0.09 | −0.02 | 0.18 | 0.04 |
| Multivariate | ||||||
| PTHpre | 0.45 | <0.0001 | 0.37 | 0.04 | ||
| FGF-23 | 0.30 | 0.02 | - | - | ||
| eGFR | −0.02 | 0.04 | - | - | ||
| Overall model | <0.0001 | 0.47 | 0.04 | 0.09 | ||
Parameters included in the model: FGF-23pre, serum albumin-corrected calcium, phosphorus, PTHpre, 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.