Table 5. Spearman Correlation Between Dietary Calcium Intake and Selected Parameters Affecting Calcium Homeostasis in Iranian School age Children.
| Coefficient Parameters Total | Dietary Ca, mg/day | Serum Ca, mg/dL | Serum P, mg/dL | Serum Mg, mg/dL | iPTH, mg/L | OST, ng/mL | 25(OH)D3, nmol/L |
|---|---|---|---|---|---|---|---|
| Dietary Ca, mg/day | - | 0.09 | -0.06 | -0.02 | -0.08 | 0.0 | |
| Serum Ca, mg/dL | 0.09 | - | 0.11 a | 0.05 | 0.02 | -0.18 b | 0.02 |
| Serum P, mg/dL | -0.06 | 0.11 a | - | 0.12 a | 0.03 | -0.12 a | 0.08 |
| Serum Mg, mg/dL | -0.02 | 0.05 | 0.12 a | - | 0.06 | -0.10 a | -0.09 |
| Ipth, mg/L | -0.08 | -0.22 b | 0.03 | 0.06 | - | 0.11 | -0.18 b |
| OST, ng/mL | 0.0 | -0.18 b | -0.12 a | -0.10 a | 0.11 | - | 0.04 |
| 25(OH)D3, nmoL/L | 0.08 | 0.02 | 0.08 | -0.09 | -0.18 b | 0.04 | - |
a P < 0.05.
b P < 0.00.