| Table 6. Clinical pregnancy rate, delivery rate and gestational order according to the number of embryos transferred in frozen embryo transfer cycles in 2015 | ||||||||
| Number of transferred embryos | Total embryo transfer | Clinical pregnancy rate per embryo transfer (%) | Deliveries | |||||
| Number | % | Total (number) | Delivery rate per embryo transfer (%) | Singleton (%) | Twin (%) | ≥Triplets (%) | ||
| 1 | 4,112 | 25.95 | 30.91 | 927 | 22.54 | 98.38 | 1.62 | 0.00 |
| 2 | 9,852 | 62.18 | 39.28 | 2,964 | 30.09 | 76.55 | 22.64 | 0.81 |
| 3 | 1,778 | 11.22 | 36.95 | 500 | 28.12 | 75.00 | 21.40 | 3.60 |
| ≥4 | 102 | 0.64 | 30.39 | 16 | 15.69 | 68.75 | 31.25 | 0.00 |
| Total | 15,844 | 100.00 | 36.79 | 4,407 | 27.81 | 80.94 | 18.11 | 0.95 |