Table 3 Ovarian stimulation results in the P2 and P3 COH protocols
| Â | P2 | P3 |
|---|---|---|
Number of cycles | 220 | 220 |
Total FSH/hMG dose (IU) | 4664 ± 605 | 4680 ± 641 |
Duration of stimulation (days) | 11.8 ± 2.3 | 11.6 ± 2.7 |
Estradiol levels on hCG day (pg/ml) | 1215 ± 350a | 712 ± 251b |
Progesterone levels on hCG day (ng/ml) | 0.8 ± 0.2 | 0.7 ± 0.3 |
Endometrial thickness (mm) | 8.7 ± 1.3 | 8.4 ± 1.2 |
No of oocyte pick-ups | 204 | 196 |
No of oocytes retrieved (per pick-up) | 1224 (6.0 ± 4.1) | 1218 (6.2 ± 4.9) |
No of M2 oocytes retrieved | 894 (4.3 ± 3.7) | 913 (4.6 ± 4.1) |
No of oocytes fertilized | 721 | 694 |
No of embryos obtained | 487 (2.3 ± 0.5)a | 426 (2.1 ± 0.3)b |
Grade I/II embryos (%) | 35.9 | 36.8 |
No of overall cancelled cycles (%) | 42 (19.0) | 51 (23.1) |
No of embryos transfer | 178 | 169 |
Embryos per transfer | 2.1 ± 0.2c | 1.9 ± 0.4d |
Clinical pregnancy rate per transfer (%) | 17.9 | 15.9 |
Ongoing pregnancy rate per transfer (%) | 14.6 | 14.2 |
Implantation rate per embryo transferred (%) | 8.9 | 8.4 |
No of cycles with cryopreservation (%) | 15.7 | 9.4 |
No of cryopreserved embryos | 69 | 43 |