Spatial and temporal changes of breast-conserving surgery rates and its influential factors among Chinese patients with breast cancer from 2013 to 2019: a registry-based study.

Objective: Our study aims to evaluate the spatial and temporal changes of breast-conserving surgery (BCS) rates and influential factors of BCS in Guangdong Province, China.

Design, Setting And Participants: This registry-based cohort study analysed the data of patients of all age groups, from the medical record cover page, which was mandatorily collected for inpatients by the Health Administrative Department of Guangdong Province, China. Patients with non-metastatic breast cancer, who underwent breast surgery between 2013 and 2019, were included.