Table 2.
COS treatment and embryo culture
| Variables | uFSH (n = 764) |
rFSH-alfa (n = 314) |
P |
|---|---|---|---|
| Gn total dose (IU) | 2334.5 ± 687.3 | 1912.3 ± 625.1 | < 0.001 |
| Oocytes retrieved | 10.0 (6.8–14.0) | 13.0 (8.0–17.0) | < 0.001 |
| 2PN oocytes | 5.0 (3.0–8.0) | 7.0 (4.0–11.0) | < 0.001 |
| Transferrable embryos | 4.0 (2.0–6.0) | 5.0 (3.0–8.0) | < 0.001 |
| High-quality embryos | 3.0 (1.0–5.0) | 4.0 (1.0–6.0) | < 0.001 |
| OHSS | 36 (4.7%) | 22 (7.0%) | 0.129 |
| IVF/ICSI | 0.014 | ||
| ICSI | 118 (15.4%) | 68 (21.7%) | |
| IVF | 646 (84.6%) | 246 (78.3%) | |
| Number of embryo transfer cycles | < 0.001 | ||
| 0 | 141 (18.5%) | 32 (10.2%) | |
| 1 | 408 (53.4%) | 154 (49.0%) | |
| 2 | 152 (19.9%) | 90 (28.7%) | |
| 3 | 57 (7.5%) | 25 (8.0%) | |
| 4 | 6 (0.8%) | 10 (3.2%) | |
| 5 | 0 (0.0%) | 3 (1.0%) |
COS controlled ovarian stimulation; OHSS ovarian hyperstimulation syndrome; IVF in vitro fertilization; ICSI intracytoplasmic sperm injection; FSH follicle-stimulating hormone