Table 6.
Baseline factors and reproductive outcomes calculated per fresh ET cycle.
| Prog | Prog+Met | P-value | |
|---|---|---|---|
| N = 138 patients | N = 81 patients | ||
| Number of ET cycles,n | 38 | 27 | |
| Age (years), mean ± SD | 32.39 ± 6.37 | 31.70 ± 4.66 | P=0.633 |
| BMI (kg/m2), mean ± SD | 26.04 ± 4.26 | 27.34 ± 3.93 | P=0.216 |
| PCOS, n(%) | 9 (23.6%) | 10(37.0%) | P=0.243 |
| Primary infertility, n(%) | 28 (73.7%) | 18(66.7%) | P=0.540 |
| EM thickness on trigger-day(cm), mean ± SD | 0.98 ± 0.20 | 0.93 ± 0.21 | P=0.377 |
| Cleavage day-3 ET cycles, %(n) | 78.9% (30/38) | 85.2% (23/27) | P=0.753 |
| 2 embryos ET cycles, %(n) | 63.2% (24/38) | 51.9% (14/27) | P=0.362 |
| Implantation rate, %(n) | 27.4% (17/62) | 29.3% (12/41) | P=0.838 |
| Biochemical pregnancy rate, %(n) | 47.4% (18/38) | 48.1% (13/27) | P=0.951 |
| Clinical pregnancy rate,%(n) | 36.8% (14/38) | 37.0% (10/27) | P=0.987 |
| Abortion rate, %(n) | 35.7% (5/14) | 40.0% (4/10) | P=1.000 |
| Live birth rate, %(n) | 23.7% (9/38) | 22.2% (6/27) | P=0.890 |
| Term delivery rate, %(n) | 77.8% (7/9) | 83.3% (5/6) | P=1.000 |
| Neonatal birth weight(kg), mean ± SD | 3.12 ± 0.55 | 3.20 ± 0.79 | P=0.816 |
ET, embryo transfer; Prog, progesterone; Met, metformin; SD, standard deviation; BMI, body mass index; PCOS, polycystic ovarian syndrome; EM,endometrial.