Table 2.
Baseline characteristics among women with or without live birth in the training cohort (N = 2307)
| Characteristic | Non-livebirth | Livebirth | P-value |
|---|---|---|---|
| (n = 1255) | (n = 1052) | ||
| Female age (years) | 33.42 ± 5.68 | 31.45 ± 4.38 | 0.000 |
| Duration of infertility (years) | 3.39 ± 2.68 | 3.21 ± 2.38 | 0.357 |
| Gravidity | 1.48 ± 1.50 | 1.25 ± 1.36 | 0.000 |
| Times of spontaneous abortion | 0.18 ± 0.45 | 0.14 ± 0.37 | 0.046 |
| Type of infertility, n(%) | 0.018 | ||
| Primary infertility | 426 (33.94%) | 407 (38.69%) | |
| Secondary infertility | 829 (66.06%) | 645 (61.31%) | |
| BMI (kg/m2) | 23.05 ± 3.13 | 22.74 ± 3.05 | 0.019 |
| Baseline FSH (IU/L) | 7.31 ± 2.75 | 6.88 ± 2.80 | 0.000 |
| Baseline E2(pg/mL) | 40.53 ± 17.82 | 39.58 ± 17.57 | 0.119 |
| Baseline P(ng/mL) | 0.49 ± 0.99 | 0.50 ± 1.22 | 0.832 |
| Baseline LH (IU/L) | 5.47 ± 3.62 | 5.56 ± 3.85 | 0.742 |
| Baseline T(ng/mL) | 0.37 ± 1.51 | 0.43 ± 2.11 | 0.152 |
| AMH (ng/ml) | 3.45 ± 2.86 | 4.10 ± 2.88 | 0.000 |
| Endometrial thickness(mm) | 9.89 ± 1.94 | 10.08 ± 1.99 | 0.025 |
| No. of embryos transferred | 1.38 ± 0.48 | 1.39 ± 0.49 | 0.656 |
| No. of high-quality embryos | 0.69 ± 0.70 | 0.76 ± 0.62 | 0.001 |
| FET protocols, n(%) | 0.032 | ||
| Artifcial cycle | 400 (31.87%) | 292 (27.76%) | |
| Natural cycle | 855 (68.13%) | 760 (72.24%) | |
| Type of embryos transferred, n(%) | 0.000 | ||
| Cleavage embryo | 345 (27.49%) | 153 (14.54%) | |
| Blastocyst | 910 (72.51%) | 899 (85.46%) |
Data are shown as means ± SD, or no. (%)
BMI Body mass index, FSH follicular stimulating hormone, E2 estradiol, P Progesterone, LH Luteinizing hormone, T Testosterone, AMH AntiMullerian hormone, FET freeze-thawed embryo transfer