Summary What is already known about this topic?Menstrual irregularity is a hallmark clinical feature of polycystic ovary syndrome(PCOS),which is an established risk factor for spontaneous abortion.However,robust popul...Summary What is already known about this topic?Menstrual irregularity is a hallmark clinical feature of polycystic ovary syndrome(PCOS),which is an established risk factor for spontaneous abortion.However,robust population-level evidence directly linking specific patterns of menstrual irregularity to spontaneous abortion risk remains lacking,as prior studies have been limited by small sample sizes.展开更多
基金Supported by the National Key Research and Development Program of China(NKPs)under grants 2021YFC2700705(Ms.Yang)and 2016YFC100307(Mr.Ma).
文摘Summary What is already known about this topic?Menstrual irregularity is a hallmark clinical feature of polycystic ovary syndrome(PCOS),which is an established risk factor for spontaneous abortion.However,robust population-level evidence directly linking specific patterns of menstrual irregularity to spontaneous abortion risk remains lacking,as prior studies have been limited by small sample sizes.
