Maternal age-related declines in live birth rate following single euploid embryo transfer: a retrospective cohort study

作者：Wei Jiang, Zichen Zheng, Nan Yan, Shuang Yao, Qijun Xie, Danyu Ni, Shanren Cao, Chun Zhao, Xiufeng Ling · 发表于：Journal of Ovarian Research · 年份：2025 · DOI：10.1186/s13048-025-01602-9 · 被引用次数：13 · 研究领域：Ovarian function and disorders、Reproductive Health and Technologies、Assisted Reproductive Technology and Twin Pregnancy

PURPOSE: To assess whether maternal age influences the pregnancy outcomes after single frozen euploid embryo transfer. METHODS: This retrospective analysis was conducted on 1037 cycles of single euploid embryo transfer performed at Nanjing Women and Children's Healthcare Hospital between January 2016 and April 2023. Patients with severe uterine pathologies, immune disorders, or endocrine diseases were excluded. The cycles were categorized into three age groups: <35 years, 35-37 years, and ≥ 38 years. Primary outcomes included live birth rate, clinical pregnancy rate, early pregnancy loss, and miscarriage rate. Data were analyzed using multivariable logistic regression with generalized estimating equations (GEE) to account for confounding factors and restricted cubic splines to visualize the relationship between maternal age and pregnancy outcomes. RESULTS: Women aged ≥ 38 years demonstrated a significantly diminished live birth rate (41.7%) ,which was lower than that observed in women aged < 35 years (54.5%) and 35-37 years (54.0%), with statistical significance (P < 0.05). Multivariable regression analysis revealed that compared with women aged ≥ 38 years, younger women had reduced risk of miscarriage (aOR = 0.371, 95% CI: 0.139-0.988 for the < 35 years group; aOR = 0.317, 95% CI: 0.106-0.954 for the 35-37 years group) and increased likelihood of live birth (aOR = 2.188, 95% CI: 1.154-4.147 for the < 35 years group; aOR = 2.239, 95% CI: 1.0103-4.548 for the 35-37 years group...