Table 2.
Agreement between BI-RADS and Volumetric Percent Density Grades by Patient and Control Participant Status
| BI-RADS density | VPD fatty | VPD scattered | VPD het | VPD dense | Total |
|---|---|---|---|---|---|
| (a) Control participants | |||||
| 1. Fatty | 388 (79%) | 98 (20%) | 6 (1%) | 0 (0%) | 492 (100%) |
| 2. Scattered | 217 (25%) | 445 (51%) | 208 (24%) | 8 (1%) | 878 (100%) |
| 3. Heterogeneous | 4 (1%) | 116 (17%) | 434 (64%) | 124 (18%) | 678 (100%) |
| 4. Dense | 0 (0%) | 2 (1%) | 32 (16%) | 161 (83%) | 195 (100%) |
| Total | 609 (27%) | 661 (29%) | 680 (30%) | 293 (13%) | 2243 (100%) |
| (b) Case participants | Case | ||||
| 1. Fatty | 59 (78%) | 16 (21%) | 1 (1%) | 0 (0%) | 76 (100%) |
| 2. Scattered | 50 (26%) | 101 (53%) | 35 (19%) | 3 (2%) | 189 (100%) |
| 3. Heterogeneous | 5 (3%) | 36 (22%) | 93 (57%) | 29 (18%) | 163 (100%) |
| 4. Dense | 0 (0%) | 0 (0%) | 7 (15%) | 39 (85%) | 46 (100%) |
| Total | 114 (24%) | 153 (32%) | 136 (29%) | 71 (15%) | 474 (100%) |