Table 4. Simple linear correlations between the percent change in serum phosphate concentration, both FGF23 molecules, serum iPTH concentration and hs-CRP (as an index of inflammation) in patients after 40 weeks of treatment.
| Variable | iFGF23 | cFGF23 | Phosphate | iPTH | ||||
|---|---|---|---|---|---|---|---|---|
| r # | P* | r # | P* | r # | P* | r # | P* | |
| cFGF23 (RU/mL) b | 0.51 | 0.01 | - | - | - | - | - | - |
| Phosphate (mg/dL) c | 0.78 | <0.001 | 0.51 | 0.01 | - | - | - | - |
| iPTH (pg/mL) d | 0.47 | 0.02 | 0.43 | 0.04 | 0.63 | <0.01 | - | - |
| hs-CRP (mg/L) e | 0.49 | 0.02 | 0.61 | <0.01 | 0.62 | <0.01 | 0.63 | <0.01 |
a iFGF23, Intact Fibroblast Growth Factor 23
b cFGF23, C-terminal Fibroblast Growth Factor
c P, Serum Phosphate
d iPTH, Intact Parathyroid Hormone
e hs-CRP, High Sensitivity C-Reactive Protein.
The Spearman correlation test was used for all comparison.
# Correlation Coefficient.
* P-value.