Table 1 Baseline characteristics and outcomes of patients in the sequential ET group and the conventional ET group (\(\bar x\) ± s; %)
Indicators | Conventional ET (n = 1080) | Sequential ET (n = 360) | P-value |
|---|---|---|---|
Age (yr) | 31.73 ± 4.47 | 31.45 ± 4.32 | 0.388 |
BMI (kg/m2) | 22.52 ± 3.53 | 22.62 ± 3.20 | 0.671 |
Infertility duration (yr) | 3.73 ± 2.80 | 3.71 ± 2.67 | 0.938 |
AMH (ng/ml) | 5.71 ± 4.81 | 5.56 ± 4.46 | 0.664 |
bFSH (mIU/ml) | 6.68 ± 3.75 | 6.65 ± 2.21 | 0.890 |
Number of failed cycles | 3.03 ± 1.69 | 3.00 ± 1.73 | 0.868 |
Endometrial thickness (mm) | 10.92 ± 2.16 | 10.89 ± 1.92 | 0.801 |
High-quality embryos rate | 43.0 (929/2160) | 44.6 (368/826) | 0.447 |
Primary infertility rate | 53.6 (579/1080) | 58.6 (211/360) | 0.099 |
Infertility factors | Â | Â | Â |
Male factors | 19.7 (213/1080) | 23.9 (86/360) | 0.091 |
Tube and pelvic factors | 42.5 (459/1080) | 40.8 (147/360) | 0.579 |
Ovulatory factors | 6.1 (66/1080) | 5.0 (18/360) | 0.436 |
Couples’ factors | 23.6 (255/1080) | 20.0 (72/360) | 0.157 |
Others | 8.1 (87/1080) | 10.3 (37/360) | 0.193 |
Clinical pregnancy rate | 23.6 (255/1080) | 31.7 (114/360) | 0.002** |
Implantation rate | 14.4 (310/2160) | 17.9 (148/826) | 0.010** |
Multiple pregnancy rate | 21.6 (55/255) | 22.8 (26/114) | 0.791 |
Miscarriage rate | 11.8 (30/255) | 13.2 (15/114) | 0.706 |