Table 2.
Multivariate model
| Covariate | Coefficient | Standard error | z | p |
|---|---|---|---|---|
| FSH | −0.001 | 0.052 | −0.013 | 0.989 |
| Female’s age | 0.002 | 0.043 | 0.040 | 0.968 |
| Male’s age | −0.054 | 0.045 | −1.205 | 0.228 |
| Duration of infertility | −0.008 | 0.071 | −0.110 | 0.912 |
| Type of infertility (primary/secondary) | 0.922 | 0.349 | 2.640 | 0.008* |
| Male factor (normal/subfertile) | −0.727 | 0.669 | −1.087 | 0.277 |
| Method of ovulation induction (CC/FSH/hMG) | 0.255 | 0.296 | 0.863 | 0.388 |
| Follicle count | 0.191 | 0.240 | 0.793 | 0.427 |
| Dominant follicle size | 0.015 | 0.065 | 0.235 | 0.814 |
| Sperm count (after preparation) | 0.001 | 0.003 | 0.406 | 0.684 |
| Sperm motility +4 | 0.032 | 0.034 | 0.938 | 0.348 |
| Sperm motility +3 | −0.006 | 0.019 | −0.310 | 0.757 |
| Sperm motility +2 | 0.029 | 0.023 | 1.264 | 0.206 |
| TPMSC | −0.001 | 0.004 | −0.369 | 0.712 |
FSH: follicle stimulating hormone; CC: clomiphene citrate; hMG: human menopausal gonadotrophin; TPMSC: total progressive motile sperm count