Table 1.
Characteristics of the Study Population by Screening Mammogram Result, Breast Cancer Surveillance Consortium
| Mammogram Classification | ||||||
|---|---|---|---|---|---|---|
| Characteristic | FP, Additional Imaging N=159,448 |
FP, Biopsy N=22,892 |
True-Negative N=2,025,602 |
|||
| N | % | N | % | N | % | |
| Age, years | ||||||
| 40–49 | 55,505 | 34.8 | 7,577 | 33.1 | 531,206 | 26.2 |
| 50–59 | 51,227 | 32.1 | 7,417 | 32.4 | 661,656 | 32.7 |
| 60–69 | 39,496 | 24.8 | 5,909 | 25.8 | 605,282 | 29.9 |
| 70–74 | 13,220 | 8.3 | 1,989 | 8.7 | 227,458 | 11.2 |
| Race/Ethnicity | ||||||
| White | 137,051 | 86.0 | 19,063 | 83.3 | 1,680,964 | 83.0 |
| Black | 6,646 | 4.2 | 1,413 | 6.2 | 108,256 | 5.3 |
| Asian, Native Hawaiian, Pacific Islander | 5,005 | 3.1 | 876 | 3.8 | 86,173 | 4.3 |
| Hispanic | 9,946 | 6.2 | 1,405 | 6.1 | 138,578 | 6.8 |
| American Indian/Alaska Native | 8,00 | 0.5 | 135 | 0.6 | 11,631 | 0.6 |
| Menopausal Status | ||||||
| Pre/Peri- | 63,111 | 39.6 | 8,749 | 38.2 | 605266 | 29.9 |
| Post- | 96,337 | 60.4 | 14,143 | 61.8 | 1420336 | 70.1 |
| Family History of Breast Cancer | ||||||
| Yes | 25,021 | 15.7 | 3,678 | 16.1 | 311,419 | 15.4 |
| No | 134,427 | 84.3 | 19,214 | 83.9 | 1,714,183 | 84.6 |
| History of breast biopsy | ||||||
| Yes | 38,970 | 24.2 | 6,675 | 29.2 | 425,906 | 21.0 |
| No | 120,478 | 75.6 | 16,217 | 70.8 | 1,599,696 | 79.0 |
| BI-RADS Breast Density | ||||||
| Almost entirely fat | 7,004 | 4.4 | 1,193 | 5.2 | 197,148 | 9.7 |
| Scattered fibroglandular densities | 65,367 | 41.0 | 9,331 | 40.8 | 919,377 | 45.4 |
| Heterogeneously dense | 73,470 | 46.1 | 10,303 | 45.0 | 754,879 | 37.3 |
| Extremely dense | 13,607 | 8.5 | 2,065 | 9.0 | 154,198 | 7.6 |
*
FP = false-positive; BI-RADS = Breast Imaging-Reporting and Data System