Open vitrification | Closed vitrification | P value | |
---|---|---|---|
Babies born/transferred blastocysts | 52/147 (35.4) | 80/295 (27.1) | 0.074 |
Male rate | 29/52 (55.8) | 41/80 (51.3) | 0.611 |
Female rate | 23/52 (44.2) | 39/80 (48.7) | 0.611 |
Multiple birth rate | 11/41 (26.8) | 10/70 (14.3) | 0.103 |
Singletons | 30 | 60 | |
Twins | 11 | 10 | |
Stillbirth rate /transfer | 1/103 (0.97) | 0 | 0.321 |