| Variables | Unstandardized Coefficients | Standardized Coefficients | t | Sig. | ||
| B | Std. Error | Beta | ||||
| 钙 | (Constant) | −1550.937 | 386.785 |
| −4.010 | 0.000 |
| 基质钙X9 | 1076.521 | 250.715 | 0.345 | 4.294 | 0.000 | |
| 总钙XCa | −2.807 | 0.426 | −0.529 | −6.587 | 0.000 | |