Fig. 1
From: Cardiovascular risk factors and breast cancer incidence in a large middle-aged cohort study
Study flow chart. The Atherosclerosis Risk in Communities (ARIC) Study is a prospective cohort study designed to investigate risk factors for atherosclerosis. A total of 15,792 individuals aged 45–64 years were recruited from 1987 to 1989 (Visit 1). We ultimately included 7501 women in this analysis and collected related data from Visit 1 to achieve a long-term follow-up