Table II.
— Treatment cycle live birth outcome.
| Day 3 | Day 5 | P value | ||
|---|---|---|---|---|
| Fresh cycles | 729 | 927 | ||
| Fresh transfers | 649 | 707 | 0.030 | |
| Live birth per fresh transfer | 124/649 (19.1%) | 156/707 (22.1%) | 0.180 | |
| Live births per oocyte collection | 124/729 (17.0%) | 156/927 (16.8%) | 0.947 | |
| Singletons | 112 | 149 | ||
| Twins | 12 (9.7%) | 7 (4.5%) | 0.098 | |
| Miscarriage rate after fresh transfer | 40/173 (23.1%) | 77/272 (28.3%) | 0.269 | |
| Patients with no live birth after fresh transfer and cryopreserved embryos left | 248/525 (47.2%) | 286/551 (51.9%) | 0.128 | |
| Live birth from frozen transfers | 49/233(21.0%) | 81/458 (17.6%) | 0.304 | |
| Singletons | 37 | 78 | ||
| Twins | 12 (24.5%) | 3 (3.7%) | <0.001 | |
| Cumulative live birth per oocyte collection cycle | 173/729 (23.7%) | 237/927 (25.5%) | 0.422 | |
| Cumulative live birth per fresh transfer | 173/649 (26.7%) | 237/707 (33.5%) | 0.006 | |
| Cycles with no live birth and no cryopreserved embryos left | 527/729 (72.3%) | 666/927 (71.8%) | 0.869 | |
Categorical data are expressed as their frequency and percentage within each study group and compared using the Fisher’s exact test. Miscarriage rate : Number of miscarriages per number of pos hCG after fresh transfer