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Autologous fresh cycles preceding the frozen embryo transfer included in this study
| Fresh cycle characteristics, autologous (medians) | Cryopreserved day 3 | Cryopreserved day 4 | p |
|---|---|---|---|
| Normal N = 61 |
Delayed N = 36 |
||
| Age, years, median (range) | 35 (22–42) | 35.5 (28–43) | 0.20 |
| BMI, kg/m2 | 22 | 24 | 0.14 |
| Day 3 FSH (IU/L) | 6.5 | 6.5 | 0.97 |
| Antral follicle count | 17 | 13 | 0.07 |
| Total gonadotropin dose (IU) | 2475 | 4200 | 0.001* |
*p < 0.05, statistically significant
