Worry Is Good for Breast Cancer Screening: A Study of Female Relatives from the Ontario Site of the Breast Cancer Family Registry

Table 1

Classification of familial risk to breast and/or ovarian cancer.

Familial risk group	Family history of breast and/or ovarian cancer
High	Two or more first-degree relatives with breast and/or ovarian cancer diagnosed at any age
	One or more first-degree relative(s) with both breast and ovarian cancer diagnosed at any age
	One or more first-degree relative(s) diagnosed with bilateral breast cancer at any age
	A personal history of ovarian cancer
Moderate	A self-reported Ashkenazi Jewish background
	One first-degree relative with breast cancer diagnosed before age of 40
	One first-degree relative with ovarian cancer
	One first-degree relative with breast cancer diagnosed after the age of 40 and two or more second-degree relatives with breast cancer diagnosed at any age
Low	One first-degree relative diagnosed with breast cancer after the age of 40