| Variables | R | P value |
| Age (years) | 0.609 | 0.0001 |
| Duration of dialysis (years) | 0.124 | 0.260 |
| BMI | 0.250 | 0.021 |
| Hemoglobin (g/dl) | 0.124 | 0.257 |
| Calcium (mg/dl) | 0.396 | 0.0001 |
| Phosphate (mg/dl) | 0.487 | 0.0001 |
| Calcium phosphate | 0.483 | 0.0001 |
| Intact PTH (pg/dl) | −0.171 | 0.117 |
| ALK IU | 0.436 | 0.0001 |
| Albumin (g/dl) | 0.049 | 0.654 |
| MGP | −0.531 | 0.0001 |
| Vitamin D | 0.087 | 0.643 |