| Table 4. Clinical pregnancy rate and delivery rate by embryo transfer in oocyte donation and FET cycles in 2018. | |||
| ART procedure | Embryo transfer | Clinical pregnancyper embryo transfer (n, %) | Delivery rateper embryo transfer (n, %) |
| Fresh oocyte donation | 6903 | 3363 (48.7%)a | 2388 (34.6%)b |
| Vitrified-warmed embryo transfer (oocyte donation) | 7532 | 3158 (41.9%)a | 2336 (31.0%)b |
| Vitrified-warmed embryo transfer (own) | 26134 | 10328 (39.5%) | 7398 (28.3%) |
ART=assisted reproductive technology; CI=confidence interval; FET=frozen embryo transfer.
a(p <0.0001) 95% CI 5.17% to 8.43%
b(p <0.0001) 95% CI 2.06% to 5.14%