Table 3. Descriptive measures of the laboratory results of the studied population, according to the chronic kidney disease stage.
| 2 | 3A | 3B | 4 | 5 | F | p | |
|---|---|---|---|---|---|---|---|
| Laboratory test | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | test | value |
| Creatinine (mg/dL) | 0.95 (0.19) | 1.26 (0.16) | 1.58 (0.25) | 2.61 (0.61) | 4.49 (0.67) | 46.19 | 0.00000 |
| Calcium (mg/dL) | 9.38 (0.44) | 9.27 (0.57) | 9.46 (0.65) | 9.32 (0.60 | 9.28 (0.66) | 1.30 | 0.26970 |
| Phosphate (mg/dL) | 3.63 (0.57) | 3.72 (0.65) | 3.72 (0.68) | 3.81 (0.66) | 4.68 (0.75) | 10.68 | 0.00000 |
| Calcium x Phosphate | 34.20 (6.65) | 34.43 (6.07) | 35.25 (6.99) | 35.47 (6.57) | 43.52 (7.61) | 8.49 | 0.00000 |
| Albumin (g/dL) | 4.26 (0.36) | 4.25 (0.48) | 4.19 (0.40) | 4.20 (0.43) | 4.06 (0.67) | 0.78 | 0.53642 |
| PH (pg/mL) | 45.91 (17.77) | 62.13 (31.11) | 77.43 (46.17) | 116.5 (71.28) | 215.35 (139.11) | 30.21 | 0.00000 |
| AP (mg/dL) | 96.50 (41.85) | 88.03 (35.84) | 113.36 (51.81) | 116.43 (61.89) | 133.69 (46.72) | 3.85 | 0.00452 |
| 24 hour urine protein (g) | 0.33 (0.90) | 0.32 (0.67) | 0.23 (0.40) | 0.87 (1.65) | 2.20 (3.58) | 10.87 | 0.00000 |
| 25(OH)D Levels (ng/mL) | 26.71 (6.82) | 26.54 (9.90) | 24.21 (9.55) | 23.07 (9.15) | 17.34 (8.88) | 4.33 | 0.00199 |
| GFR (mL/min) | 67.25 (7.50) | 50.30 (4.00) | 37.13 (4.18) | 22.38 (4.53) | 11.39 (1.78) | 737.66 | 0.00000 |