Table 1.

Breast cancer risk factors used for 10-year breast cancer risk calculation with the S-IBIS software. The “age at baseline” for all of our participants was 40 years old.

Risk factor
Age at baseline
Height
Weight
Age at menarche
Age at first childbirth
Menopausal status
Hormone replacement therapy use
Prior benign breast disease
Family history of breast and/or ovarian cancer - first- and second-degree relatives (age at diagnosis and current age or age at death)