| eSET with elective day 5 transfer | eSET with transfer day 3 or 5 | Statistical significance | |
---|---|---|---|---|
No. of embryos cryopreserved | 640 | 517 | Â | |
No. of thawing cycles | 188 | 143 | Â | |
No. of embryos thawed | 286 | 229 | Â | |
No. of embryos surviving | 200 | 150 | Â | |
Transferrable survival rate | 200/286 (69.9) | 150/229 (65.5) | NS | |
Subjects with thawed transfers | 109 | 71 | Â | |
Total number of thawed transfers | 171 | 125 | Â | |
Total number of clinical pregnancies | 26 | 21 | Â | |
Transfer specific pregnancy rate1 | 26/171 (15.2) | 21/125 (16.8) | NS | |
Subject specific pregnancy rate2 | 26/109 (23.9) | 21/71 (29.6) | NS | |
 |  | Day 3 | Day 5 |  |
No. of embryos cryopreserved | Â | 154 | 363 | Â |
No. of thawing cycles | Â | 41 | 102 | Â |
No. of embryos thawed | Â | 84 | 145 | Â |
No. of embryos surviving | Â | 39 | 111 | Â |
Transferrable survival rate | Â | 39/84 (46.4) | 111/145 (76.5) | <0.001 |
Subjects with thawed transfers | Â | 26 | 45 | Â |
Total number of thawed transfers | Â | 28 | 97 | Â |
Total number of clinical pregnancies | Â | 4 | 17 | Â |
Transfer specific pregnancy rate1 | Â | 4/28 (14.3) | 17/97 (17.5) | NS |
Subject specific pregnancy rate2 | Â | 4/26 (15.4) | 17/45 (37.8) | 0.05 |