Table 2.
Ovarian stimulation and IVF in PCOS and control groups
| Variable | PCOS (n=53) | Controls (n=408) | P |
| Amps of gonadotrophin | 29.42±10.45 | 30.92±3.32 | 0.106 |
| Duration of stimulation (d) | 11.43±2.53 | 11.60±2.22 | 0.625 |
| No. of oocytes retrieved | 21.57±9.86 | 13.86±7.15 | 0.000 |
| No. of embryos | 13.31±6.62 | 10.02±5.97 | 0.000 |
| E2 (pmol/L) before hCG injection | 331700.12±24756.62 | 316788.75±16505.18 | 0.000 |
| P (nmol/L) before hCG injection | 33.06±2.50 | 32.31±1.98 | 0.023 |
| Fertilization rate (%) | 61.6 | 72.1 | 0.000 |
| Implantation rate (%) | 11.1 | 16.60 | 0.328 |
| Clinical pregnancy rate (%) | 38.5 | 42.0 | 0.798 |
| Miscarriage rate (%) | 40.0 | 14.38 | 0.116 |
| OHSS rate (%) | 22.9 | 34.7 | 0.000 |
| ET cancelled rate (%) | 54.3 | 34.2 | 0.000 |