Table 2.
Perinatal outcomes of vitrified/warmed embryo transfers
| HSA | rHA | P-value | |
|---|---|---|---|
| Live-born | 447 | 374 | |
| M (%) | 207 (46.3) | 203 (54.3) | .025 |
| F (%) | 240 (53.7) | 171 (45.7) | .025 |
| Vaginal delivery (%) | 261 (60.6) | 218 (60.1) | .942 |
| Cesarean section (%) | 170 (39.4) | 145 (39.9) | .942 |
| Mean gestational age (wk) | 38.7 ± 0.1 | 38.9 ± 0.1 | .158 |
| Preterm (<37 wk) (%) | 39 (9.0) | 22 (6.1) | .141 |
| Mean birth weight (g) | 2,988 ± 28 | 3,046 ± 26 | .133 |
| <1,500 g (%) | 13 (2.9) | 5 (1.3) | .154 |
| 1,500–2,499 g (%) | 53 (11.9) | 41 (11.0) | .742 |
| >2,500 g (%) | 381 (85.2) | 328 (87.7) | .358 |
| Twins (%) | 16 (3.7) | 9 (2.5) | .416 |
| Triplets (%) | 0 | 1 (0.3) | - |
| Preterm birth complications (%) | 3 (0.7) | 0 | - |
Values are expressed as mean ± SEM. The vitrification/warming solutions contained either HSA (HSA group) or rHA (rHA group)