| Group A | Group B | t | ||
| Duration of stimulation | 8.68 ± 1.12 | 12.40 ± 1.47 | 16.73 | <0.001* (ES) |
| E2 levels | 717.6 ± 17.4 | 1028.7 ± 80.85 | 19.22 | <0.001* (ES) |
| N of follicles ≥ 18 mm | 1.75 ± 0.52 | 1.87 ± 0.67 | 1.11 | 0.26 (NS) |
| Endometrial thickness at day of HCG stimulation | 8.97 ± 0.99 | 10.24 ± 6.58 | 9.25 | <0.001* (ES) |