以下内容是摘要的方法请润色这段话使其表达流畅结构合理符合高分SCI的要求The study involved longitudinal data on Chinese breast cancer patients where we collected QLQ-C30 and EQ-5D-5L data from 237 breast cancer patients at baseline We a

The study utilized longitudinal data from Chinese breast cancer patients, specifically collecting QLQ-C30 and EQ-5D-5L data from 237 patients at the start of the study. We evaluated the validity, correlation, and ceiling and floor effects of both scores, and calculated utility scores using the Chinese value set for QLU-C10D and EQ-5D-5L. Additionally, after a period of 7 days, we conducted a test-retest reliability examination on a subset of 47 patients, using Bland-Altman plots and ICC values. Finally, after 30 days, we gathered a group of 177 patients to assess the responsiveness of QLU-C10D.