| Table 5. Clinical pregnancy rate, delivery rate and gestational order according to the number of embryos transferred in fresh and frozen oocyte donation cycles in 2016 | ||||||||||||
| Number of transferred embryos | Total embryo transfer | Clinical pregnancy | Deliveries | |||||||||
| Number | % | Number | % | Number of deliveries | Delivery rater per embryo transfer (%) | Singleton (n) | Singleton (%) | Twin (n) | Twin (%) | ≥ Triplets (n) | ≥ Triplets (%) | |
| 1 | 2305 | 22.00 | 927 | 40.22 | 622 | 26.98 | 610 | 98.07 | 12 | 1.93 | 0 | 0.00 |
| 2 | 6648 | 63.46 | 3038 | 45.70 | 2225 | 33.47 | 1622 | 72.90 | 600 | 26.97 | 3 | 0.13 |
| 3 | 1471 | 14.04 | 723 | 49.15 | 581 | 39.50 | 364 | 62.65 | 195 | 33.56 | 22 | 3.79 |
| ≥4 | 52 | 0.50 | 22 | 42.31 | 18 | 34.62 | 16 | 88.89 | 2 | 11.11 | 0 | 0.00 |
| Total | 10476 | 100 | 4710 | 44.96 | 3446 | 32.89 | 2612 | 75.80 | 809 | 23.48 | 25 | 0.73 |