Table 2.
Laboratory data stratified by eGFR values
| eGFR ≥60 mL/min/m 2 | eGFR 30–60 mL/min/m 2 | eGFR <30 mL/min/m 2 | |||||
|---|---|---|---|---|---|---|---|
| Variables | (n = 44) | (n = 124) | (n = 17) | P value | |||
| eGFR, mL/min/1.73 m2 | 69.2 ± 8.7 | 45.9 ± 8.4 | 25.6 ± 8.4 | <0.001 | |||
| Urine albumin creatinine ratio | 10 | (7–55) | 13 | (6–27) | 75 | (10–196) | 0.036 |
| Serum cCa, mg/dL | 9.1 | (8.8 - 9.5) | 9.1 | (8.7 - 9.3) | 9.1 | (8.7 - 9.3) | 0.508 |
| Serum inorganic phosphate, mg/dL | 3.40 | (3.10 - 3.70) | 3.30 | (2.90 - 3.70) | 3.30 | (3.00 - 3.65) | 0.546 |
| Urine calcium creatinine ratio, mg/g | 0.11 | (0.07 - 0.17) | 0.07 | (0.04 - 0.11) | 0.03 | (0.01 - 0.05) | <0.001 |
| Fractional excretion of calcium, % | 0.81 | (0.48 - 1.30) | 0.72 | (0.42 - 1.05) | 0.46 | (0.17 - 0.89) | 0.041 |
| Urine phosphate creatinine ratio, mg/g | 0.50 ± 0.23 | 0.49 ± 0.20 | 0.39 ± 0.15 | 0.149 | |||
| TRP, % | 90.1 ± 4.9 | 85.5 ± 6.2 | 80.2 ± 8.6 | <0.001 | |||
| TmP/GFR, mg/dL | 3.3 | (2.8 - 4.2) | 2.8 | (2.5 - 3.4) | 2.6 | (2.2 - 3.2) | <0.001 |
| FGF23, pg/mL | 41.2 | (29.4 - 62.3) | 47.0 | (35.3 - 67.9) | 66.4 | (45.6 - 111.3) | 0.009 |
| α-Klotho, mg/dL | 425 | (254–539) | 351 | (224–473) | 211 | (163–286) | 0.001 |