Table 2.
Pregnancy and delivery outcome of frozen blastocyst embryo transfer in the non-artificial shrinkage (NAS), artificial shrinkage, and in the total
| NAS | AS | Total | P | |
|---|---|---|---|---|
| Pregnancies (n°) | 122 | 207 | 329 | |
| Live birth rate (%) | 79 (64.8 %) | 152 (73.4 %) | 231 (70.2 %) | 0.106 |
| Abortion rate (%) | 39 (32.0 %) | 48 (23.2 %) | 87 (26.4 %) | 0.093 |
| Ectopic pregnancies (%) | 4 (3.3 %) | 7 (3.4 %) | 11 (3.3 %) | 1.000 |
| Singleton (%) | 103 (84.4 %) | 170 (82.1) | 273 (83.0 %) | 0.959 |
| Twin (%) | 15 (12.3 %) | 29 (14.0 %) | 44 (13.4 %) | |
| Triplet (%) | 0 | 1 (0.5 %) | 1 (0.3 %) | |
| Births | 79 | 152 | 231 | |
| Singleton Birth (%) | 69 (87.3 %) | 129 (84.9 %) | 198 (85.7 %) | 0.695 |
| Twin Birth (%) | 10 (12.7 %) | 23 (15.1 %) | 33 (14.3 %) | |
| Triplet (%) | 0 | 1 (0.5 %) | 1 (0.3 %) | |
| Babies Born (n°) | 89 | 175 | 264 | |
| Gestational age (weeks)a | 38.2 ± 2.4 | 38.1 ± 2.3 | 38.1 ± 2.3 | 0.410 |
| Singleton gestational age (weeks)a | 38.6 ± 2.2 | 38.7 ± 1.7 | 38.7 ± 1.9 | 0.544 |
| Twin gestational age (weeks)a | 35.5 ± 1.7 | 34.8 ± 2.0 | 35.0 ± 1.9 | 0.272 |
| Singleton weight (g)+ | 3363 ± 578 | 3313 ± 509 | 3330 ± 533 | 0.449 |
| Twin weight (g)a | 2530 ± 393 | 2250 ± 483 | 2334 ± 473 | 0.019 |
aMean ± SD