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Female Breast Cancer Incidence and Association with Socioeconomic Status in a Population-Based Cohort - China,

Heling Bao¹, Liwen Fang², Shu Cong²

¹Institute of Medical Information, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.

China CDC Weekly

|April 14, 2025

Abstract

What Is Already Known About This Topic?:

Breast cancer has emerged as the most prevalent cancer among women globally and is increasingly affecting younger populations. However, the relationship between individual socioeconomic status (SES) and breast cancer risk remains incompletely understood.

What Is Added By This Report?:

This population-based cohort study revealed a breast cancer incidence rate of 48.9 per 100,000 person-years. Women with high SES demonstrated a significantly elevated risk of breast cancer compared to those with low SES [hazard ratio (HR)=1.42, 95% confidence interval (CI): 1.05, 1.92]. Self-perceived SES appeared to moderate this association, with an increased breast cancer risk particularly evident among women who had both low objectively assessed and self-perceived SES.

What Are The Implications For Public Health Practice?:

These findings underscore the need for tailored breast cancer screening programs and targeted health education initiatives that account for differences across SES groups.

Keywords:

breast cancer cohort study incidence socioeconomic status

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