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Table 4 Correlation between FGF23/α-Klotho and serum and urine calcium/phosphate-related parameters

From: Association of serum levels of FGF23 and α-Klotho with glomerular filtration rate and proteinuria among cardiac patients

  Total study population eGFR ≥60 mL/min/m2 eGFR <60 mL/min/m2
  Log (FGF23) Log (α-Klotho) Log (FGF23) Log (α-Klotho) Log (FGF23) Log (α-Klotho)
Log (FGF23) -   −0.14 0.064 -   −0.23 0.138 -   −0.10 0.256
Log (α-Klotho) −0.14 0.064 -   −0.23 0.138 -   −0.10 0.256 -  
Log (cCa) 0.22 0.003 0.06- 0.444 0.13 0.395 0.09 0.553 0.26 0.002 0.05 0.559
Inorganic phosphate 0.23 0.002 0.05 0.509 0.11 0.469 −0.25 0.104 0.27 0.001 −0.01 0.934
Log (urine Ca/cr) −0.15 0.039 0.22 0.003 −0.23 0.134 −0.05 0.735 −0.09 0.311 0.26 0.002
Log (FEca) −0.15 0.045 0.15 0.037 −0.25 0.106 −0.04 0.786 −0.10 0.247 0.19 0.021
Urine phosphate creatinine ratio 0.07 0.348 0.03 0.728 −0.09 0.544 −0.13 0.411 0.12 0.153 0.08 0.363
Percent TRP −0.14 0.064 0.11 0.124 0.15 0.331 0.03 0.858 −0.14 0.099 0.08 0.331
Log (TmP/GFR) 0.07 0.355 0.04 0.634 0.17 0.276 −0.13 0.385 0.10 0.247 0.04 0.638
  1. For the correlation between log(FGF23) and log(α-Klotho) and between log(FGF23) or log(α-Klotho) and inorganic phosphate, urine phosphate creatinine ratio, percent TRP, and log(TmP/GFR), Pearson’s correlation test was used. Spearman’s correlation test was used otherwise.