Trial design
PCOS
This pragmatic clinical trial was performed at Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, to compare treatment outcomes of different letrozole doses for ovulation induction in infertile women with PCOS, using sequential letrozole/FSH. Each individual paid for their own medication and examination, and no extra compensation was offered. The study was approved by the Medical Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology (approval number 0002-02; approval date March 5, 2023), and it was registered on the Chinese Clinical Trial Registration website (