| Table 4. Clinical pregnancy rate, delivery rate and gestational order according to the number of embryos transferred in IVF and intracytoplasmic sperm injection 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 | 5,069 | 19.84 | 19.92 | 747 | 14.74 | 97.46 | 2.54 | 0.00 |
| 2 | 15,560 | 60.90 | 37.91 | 4,493 | 28.88 | 77.92 | 21.79 | 0.29 |
| 3 | 4,395 | 17.20 | 37.05 | 1,197 | 27.24 | 74.69 | 21.72 | 3.59 |
| ≥4 | 530 | 2.07 | 31.99 | 111 | 20.94 | 72.97 | 21.62 | 5.41 |
| Total | 25,554 | 100.00 | 34.07 | 6,548 | 25.62 | 79.47 | 19.58 | 0.95 |