Overweight might Affect the Live Birth Rate after Frozen Thawed Embryo Transfer Cycles in Chinese Women

Background: Overweight affects about 34.3% of Chinese adults, especially women childbearing age. The purpose this study was to investigate whether overweight affect the live birth rate frozen-thawed embryo transfer (FET) cycles in mothers. Methods: This retrospective case-control conducted all patients undergoing FET from May 2016 October 2020 at a single center. A total 969 performed 632 were included analysis. Patients divided into four groups based on mother’s body mass index (BMI): Group 1: BMI <18.5 kg/m2; 2: 18.5 kg/m2 ≤ <24 3: 24 <28 4: ≥28 kg/m2. main outcome indicator per cycle. secondary endpoints rates biochemical clinical pregnancy, implantation, multiple pregnancy and miscarriage. Results: Ovarian reserve parameters similar among (p = 0.382 for anti-Müllerian hormone p 0.195 antral follicle count). Additionally, chemical implantation comparable groups. Pregnancy outcomes using logistic regression analysis adjusting age, (AMH), count (AFC), endometrial thickness, indication combined with polycystic ovarian syndrome (PCOS), duration infertility (years), stage embryos transferred, previous attempts, protocol preparation, number BMI. decreasing tendency 0.032) 0.011) change observed through Chi Square Trend test. Conclusions: might reduce possibility after