Table 1 Clinical characteristics and IVF-ET data
Control group | Ultralong group | Pvalue | |
|---|---|---|---|
No. of patients | 12 | 11 | |
Age (yrs) | 34.5 ± 3.4 | 33.5 ± 3.3 | 0.45 |
Gonadotropin dose (IU) | 1502 ± 377 | 2209 ± 849a | 0.037 |
Duration of COH (days) | 8.6 ± 1.9 | 11.5 ± 3.4a | 0.032 |
Estradiol (pg/ml) | 1995 ± 1054 | 1280 ± 892 | 0.098 |
No. of follicles (≧15 mm) | 7.1 ± 2.7 | 6.6 ± 3.8 | 0.79 |
No. of mature follicles (≧18 mm) | 3.0 ± 2.0 | 3.2 ± 2.8 | 0.79 |
No. of oocytes retrieved | 5.0 ± 2.9 | 5.7 ± 4.1 | 0.70 |
Fertilization rate (%) | 51.7 (31/60) | 39.7 (25/63) | 0.21 |
Cases of IVF/ICSI | 11 / 1 | 8 / 3 | |
Cases of embryo transfer | 8 | 8 | 0.79 |
No. of embryos transferred | 1.2 ± 0.8 | 1.3 ± 1.0 | 0.74 |
Cases of 2–4 cell embryo/blastcyst (cryopreserved) | 4 (1) / 4 (1) | 6 (0) / 2 (0) | |
Implantation rate (%) | 8.3 (1/12) | 21.4 (3/14) | 0.35 |
Pregnancy rate (%) | 8.3 (1/12) | 27.3 (3/11) | 0.23 |