Table 2.
Prevalence of participants meeting USPSTF increased-risk family history patterns
| USPSTF Increased-risk family history pattern | All participantsa (n = 2,524) % | Participants without breast cancer (n = 2,087) % |
|---|---|---|
| Any pattern | 5.9 | 5.0 |
| Two first-degree relatives with breast cancer, at least 1 relative under age 50 | 1.4 | 0.9 |
| Three or more first- or second-degree relatives with breast cancer at any age | 1.8 | 1.4 |
| Both breast and ovarian cancer among first- and second-degree relatives | 2.6 | 2.3 |
| A first-degree relative with bilateral breast cancer | 1.1 | 1.0 |
| Two or more first- or second-degree relatives with ovarian cancer any age | 0.8 | 0.8 |
| A first- or second-degree relative with both breast and ovarian cancer | 0.2 | 0.2 |
| Male relative with breast cancer | 0.5 | 0.5 |
| Any 2 patterns | 1.5 | 1.1 |
| Any 3 or more patterns | 0.6 | 0.5 |
| Jewish pattern | 0.4 | 0.3 |
NOTE: All prevalence estimates are weighted to account for the oversampling of high and elevated objective risk group.
a
Includes participants with a personal history of breast cancer considered from the perspective of a hypothetical unaffected sister.