| Variables | Unstandardized Coefficients | Standardized Coefficients | t | Sig. | |
| B | Std. Error | Beta | |||
| (Constant) | −23.795 | 15.549 |
| −1.530 | 0.129 |
| 盆底PH | 8.911 | 2.672 | 0.315 | 3.334 | 0.001 |
| EC值 | −1.512 | 0.371 | −0.385 | −4.073 | 0.000 |