Univariate and multivariate Cox analysis for composite events
| Parameters | HR (95% CI) | p Value |
| Univariate analysis | ||
| Age | 0.976 (0.952 to 1.034) | 0.857 |
| Hypertension (yes/no) | 0.815 (0.480 to 1.702) | 0.516 |
| Diabetes (yes/no) | 0.624 (0.261 to 1.664) | 0.410 |
| Vitamin D supplement (yes/no) | 0.382 (0.414 to 1.852) | 0.273 |
| FGF23 level (>503.2 or ≤503.2 pg/mL) | 0.391 (0.341 to 0.915) | 0.029 |
| s-Klotho level (>2.44 or ≤2.44 ng/mL) | 3.152 (1.446 to 7.807) | 0.013 |
| Ca (mmol/L) | 0.153 (0.026 to 1.322) | 0.082 |
| Phosphorus (mmol/L) | 4.329 (1.083 to 16.733) | 0.040 |
| iPTH (mmol/L) | 1.141 (1.083 to 1.226) | 0.268 |
| Albumin (g/L) | 0.954 (0.885 to 1.101) | 0.057 |
| Multivariate analysis | ||
| Phosphorus (mmol/L) | 3.159 (0.672 to 14.826) | 0.203 |
| FGF23 level (>503.2 or ≤503.2 pg/mL) | 1.316 (0.472 to 3.779) | 0.707 |
| s-Klotho level (>2.44 or ≤2.44 ng/mL) | 3.291 (1.056 to 9.823) | 0.048 |
Adjusted variables included in the model were: age, hypertension, vitamin D supplement, diabetes, FGF23 and Klotho levels, Ca, phosphorus, iPTH, and albumin.
Ca, calcium; FGF23, fibroblast growth factor 23; iPTH, intact parathyroid hormone.