From: Breast fibroadenomas are not associated with increased breast cancer risk in an African American contemporary cohort of women with benign breast disease
Standardized incidence ratioa
95% confidence interval
Population rate
Ref
Entire BBD cohort (N = 221 cancers)
1.19
1.05–1.36
Biopsy without fibroadenoma (N = 145 cancers)
1.40
1.19–1.65
Fibroadenoma (N = 76 cancers)
0.93
0.75–1.17