The Impact of Socioeconomic Determinants on the Patient Reported Outcomes in Young Breast Cancer Patients After Breast Surgery

This study is a prospective, observational cohort study aiming to enroll 1000 young Chinese breast cancer patients and assign them to three arms: Breast-conserving surgery, mastectomy alone, and mastectomy with breast reconstruction, based on their clinical decisions and preferences. Clinicopathological features (age,Tumor, Node, Metastasis stages, pathological features, etc.), socioeconomic determinants (education level, income, insurance status, marital status, occupational status, personality, etc.), treatment information (neoadjuvant chemotherapy or not, post-operative complications), and survival (local recurrence, metastasis) will be recorded. All patients will be followed at 6 and 12 months for the first year after diagnosis, then yearly thereafter for an additional 9 years (for a total follow-up of at least 10 years following diagnosis). During the post-operative follow-up, quality of life, psychological well-being, decision regret, surgical information, treatment costs, and surveillance-follow-up will be recorded. The primary endpoint of this study is the quality of life, assessed using the Breast-Q and the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30). Secondary endpoints include decisional conflict scale, decision regret scales, and the Hospital Anxiety and Depression Scale (HADS). The primary and secondary endpoints will be compared among the three arms, and the impact of socioeconomic determinants at baseline on these endpoints will also be investigated. Additionally, the investigators aim to explore the potential of a novel subtyping method for young breast cancer patients using selected socioeconomic determinants.