Table 1.
Baseline characteristics of study population
| Characteristics | Validation set (N = 844) |
Training set (N = 3372) |
P value |
|---|---|---|---|
| Cycle Type | 0.780 | ||
| First Cycle | 352 (41.7%) | 1386 (41.1%) | |
| Repeat Cycle | 492 (58.3%) | 1986 (58.9%) | |
| Type of infertility | 0.782 | ||
| Primary infertility | 265 (31.4%) | 1078 (32.0%) | |
| Secondary infertility | 579 (68.6%) | 2294 (68.0%) | |
| Duration of infertility (years) | 5.29 ± 4.63 | 5.23 ± 4.62 | 0.721 |
| Age (years) | 37.8 ± 5.57 | 37.5 ± 5.59 | 0.153 |
| BMI | 22.4 ± 2.79 | 22.3 ± 2.87 | 0.159 |
| Basal FSH (mIU/mL) | 13.1 ± 7.58 | 12.8 ± 7.38 | 0.265 |
| Basal LH (mIU/mL) | 5.17 ± 4.64 | 5.01 ± 4.48 | 0.361 |
| FSH/LH | 3.07 ± 1.67 | 3.29 ± 8.31 | 0.165 |
| Basal P (ng/mL) | 0.91 ± 2.03 | 0.92 ± 1.75 | 0.932 |
| Basal E2 (pg/mL) | 71.2 ± 134 | 69.3 ± 84.5 | 0.698 |
| AFC | 2.72 ± 1.03 | 2.75 ± 1.03 | 0.484 |
| AMH (ng/mL) | 0.49 ± 0.30 | 0.51 ± 0.31 | 0.368 |
| High-quality cleavage embryo formation | 0.750 | ||
| No | 449 (53.2%) | 1817 (53.9%) | |
| Yes | 395 (46.8%) | 1555 (46.1%) |
Continuous variables are expressed as mean ± SD, categorical variables as absolute frequencies, n (%)
BMI, body mass index; FSH, follicular-stimulating hormone; LH, luteinizing hormone; P, progesterone; E2, estradiol; AFC, antral follicle count; AMH, anti-Müllerian hormone