Table 3 Baseline characteristics and pregnancy outcomes of patients with different numbers of embryos transferred in the sequential ET group (\(\bar x\) ± s; %)
Indicators | Two embryos transferred (n = 254) | Three embryos transferred (n = 106) | P-value |
|---|---|---|---|
Age (yr) | 31.41 ± 4.18 | 31.56 ± 4.67 | 0.763 |
BMI (kg/m2) | 22.61 ± 3.19 | 22.65 ± 3.24 | 0.910 |
Infertility duration (yr) | 3.57 ± 2.71 | 4.07 ± 2.56 | 0.107 |
AMH (ng/ml) | 5.70 ± 4.76 | 5.23 ± 3.66 | 0.357 |
bFSH (mIU/ml) | 6.87 ± 2.19 | 6.11 ± 2.19 | 0.053 |
Number of failed cycles | 2.83 ± 1.57 | 3.41 ± 2.02 | 0.009** |
Endometrial thickness (mm) | 10.88 ± 1.98 | 10.89 ± 1.79 | 0.969 |
High-quality embryos rate | 44.9 (228/508) | 44.0 (140/318) | 0.810 |
Primary infertility rate | 59.8 (152/254) | 55.7 (59/106) | 0.463 |
Infertility factors | Â | Â | Â |
Male factors | 24.0 (61/254) | 23.6 (25/106) | 0.930 |
Tube and pelvic factors | 40.2 (102/254) | 42.5 (45/106) | 0.686 |
Ovulatory factors | 5.1 (13/254) | 4.7 (5/106) | 0.874 |
Couples’ factors | 20.9 (53/254) | 17.9 (19/106) | 0.525 |
Others | 9.8 (25/254) | 11.3 (12/106) | 0.674 |
Clinical pregnancy rate | 30.3 (77/254) | 34.9 (37/106) | 0.393 |
Implantation rate | 18.3 (93/508) | 17.3 (55/318) | 0.712 |
Multiple pregnancy rate | 20.8 (16/77) | 27.0 (10/37) | 0.457 |
Miscarriage rate | 15.6 (12/77) | 8.1 (3/37) | 0.269 |