Table 2.
Total number of automatically extracted data elements for eligible women (prevalence sample)
| Imaging | Finding | Left breast | Right breast | Patient levela |
|---|---|---|---|---|
| Screening mammography (n = 94,861) | Calcification | 1761 (1.9) | 1743 (1.8) | 2493 (2.6) |
| Mass | 929 (1.0) | 830 (0.9) | 1491 (1.6) | |
| Implants | 254 (0.3) | 240 (0.3) | 255 (0.3) | |
| Asymmetry | 1136 (1.2) | 953 (1.0) | 1819 (1.9) | |
| Architectural distortion | 170 (0.2) | 185 (0.2) | 330 (0.3) | |
| Positive BI-RADSb | 5990 (6.3) | 5411 (5.7) | 10,021 (10.6) | |
| Diagnostic mammography (n = 26,841) | Calcification | 2215 (8.3) | 2074 (7.7) | 3222 (12.1) |
| Mass | 1690 (6.3) | 1572 (5.9) | 2707 (10.0) | |
| Implants | 118 (0.4) | 108 (0.4) | 147 (0.5) | |
| Asymmetry | 929 (3.5) | 775 (2.9) | 1519 (5.7) | |
| Architectural distortion | 387 (1.4) | 443 (1.7) | 796 (3.0) | |
| Positive BI-RADSb | 1534 (5.7) | 1376 (5.1) | 2817 (10.5) | |
| Digital tomosynthesis (n = 1133) | Calcification | 69 (6.1) | 74 (6.5) | 107 (9.4) |
| Mass | 102 (9.0) | 104 (9.2) | 159 (14.0) | |
| Implants | 3 (0.3) | 3 (0.3) | 3 (0.3) | |
| Asymmetry | 57 (5.0) | 48 (4.2) | 97 (8.6) | |
| Architectural distortion | 29 (2.6) | 28 (2.5) | 51 (4.5) | |
| Positive BI-RADSb | 79 (7.0) | 73 (6.4) | 141 (12.4) | |
| Breast magnetic resonance imaging (n = 2675) | Mass | 212 (7.9) | 210 (7.9) | 277 (10.4) |
| Cysts | 300 (11.2) | 298 (11.1) | 397 (14.8) | |
| Implants | 70 (2.6) | 61 (2.3) | 85 (3.2) | |
| NME | 46 (1.7) | 40 (1.5) | 73 (2.7) | |
| Focus | 220 (8.2) | 227 (8.5) | 333 (12.4) | |
| Positive BI-RADSb | 184 (6.9) | 177 (6.6) | 327 (12.2) | |
| Ultrasound (n = 10,031) | Mass | 883 (8.8) | 887 (8.8) | 1487 (14.8) |
| Cysts | 746 (7.4) | 694 (6.9) | 1194 (11.9) | |
| Architectural distortion | 89 (0.9) | 27 (0.3) | 116 (1.2) | |
| Positive BI-RADSb | 789 (7.9) | 769 (7.7) | 1497 (14.9) |
aPatient level means that the finding was present in either the right or left breast
bA positive final assessment is defined as BI-RADS categories 0, 3, 4, or 5 on screening mammogram and BI-RADS categories 4 or 5 on diagnostic workup