Table 2 Pregnancy and birth outcomes
Seven Days (Group A) | Fourteen Days (Group B) | Relative Risk (95% CI) | P-value | |
|---|---|---|---|---|
Patients | 942 | 1686 | ||
FET cycles | 1406 | 2716 | ||
Positive pregnancy per embryo transfer | 657 (46.7) | 1228 (45.2) | 0.97 (0.92 to 1.03) | 0.355 |
Clinical pregnancy per embryo transfer | 622 (44.2) | 1113 (41.0) | 1.08 (1.00 to 1.16) | 0.044 |
Biochemical pregnancy loss per positive pregnancy | 35 (5.3) | 115 (9.4) | 0.57 (0.39 to 0.82) | 0.002 |
Clinical pregnancy loss per clinical pregnancy | 129 (20.7) | 222 (19.9) | 1.04 (0.86 to 1.26) | 0.693 |
Total pregnancy loss per positive pregnancy | 164 (25.0) | 337 (27.4) | 0.91 (0.78 to 1.07) | 0.245 |
Ectopic pregnancy per positive pregnancy | 9 (1.4) | 32 (2.6) | 0.53 (0.25 to 1.10) | 0.080 |
Ongoing pregnancy per embryo transfer | 486 (34.6) | 862 (31.7) | 1.09 (0.99 to 1.19) | 0.067 |
Live birth per embryo transfer | 484 (34.4) | 859 (31.6) | 1.25 (0.99 to 1.57) | 0.069 |
Cumulative live birth per patient | 448 (47.6) | 823 (48.8) | 0.97 (0.90 to 1.06) | 0.537 |