Table 3.
Agreement between software volumetric breast density (VBD) in digital mammography (DM) and radiologists’ Breast Imaging-Reporting and Data System (BI-RADS) density scores
| BI-RADS density scores | ||||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | Total* | ||
| Software density DM |
a | 880 (48.0%) | 921 (50.3%) | 31 (1.7%) | 0 (0.0%) | 1832 |
| b | 498 (14.7%) | 2129 (62.9%) | 742 (21.9%) | 16 (0.5%) | 3385 | |
| c | 86 (2.8%) | 740 (24.0%) | 2006 (65.1%) | 248 (8.1%) | 3080 | |
| d | 11 (0.7%) | 90 (5.6%) | 868 (53.8%) | 643 (39.9%) | 1612 | |
| Total | 1475 (14.9%) | 3880 (39.2%) | 3647 (36.8%) | 907 (9.2%) | 9909 | |
*Observed agreement 57.1%, κ = 0.55