Table 2.
Comparison of pregnancy outcomes between groups divided by serum estrogen levels on the endometrium transformation day [% (n/n)].
| Group | Clinical pregnancy rate | Implantation rate | Multiple-pregnancy rate | Abortion rate | Live birth rate |
|---|---|---|---|---|---|
| A1 | 75.6 (133/176) | 62.8 (221/352) | 50.0 (88/176) | 9.0 (12/133) | 68.8 (121/176) |
| A2 | 70.8 (126/178) | 52.8 (188/356) | 36.0 (64/178) | 11.1 (14/126) | 62.4 (111/178) |
| A3 | 77.8 (137/176) | 59.4 (209/352) | 40.9 (72/176) | 14.6 (20/137) | 66.5 (117/176) |
| A4 | 69.7 (124/178) | 50.0* (178/356) | 32.6* (58/178) | 11.3 (14/124) | 60.7 (108/178) |
| χ2 | 4.101 | 14.864 | 12.696 | 2.112 | 3.184 |
| p | 0.251 | 0.002 | 0. 005 | 0.550 | 0.364 |
*Compared with other groups, P < 0.05.