|Age at diagnosis of BC in first degree relatives||RR for women <50 years (95% CI)||RR for women ≥ 50 years (CI)|
|<40 years||13.5 (3.4 to 53.9)||3.9 (1.8 to 8.6)|
|≥40 years||7.8 (2.4 to 25.0)||2.6 (1.8 to 3.7)|
Review: breast cancer is associated with a family history of the disease in first degree relatives
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