Table 3 |
|||
| Percentage of mammographic density of the study subjects by categories of mammographic density based on the Breast Imaging Reporting and Data System (BIRADS) of the American College of Radiology | |||
| ACR category | N | Percent density | |
| Mean | Median | ||
| Mostly fatty (ACR I) | 58 | 3 | 1 |
| Fibroglandular (ACR II) | 282 | 11 | 8 |
| Heterogeneously dense (ACR III) | 283 | 33 | 31 |
| Dense (ACR IV) | 65 | 52 | 50 |
| Missing evaluations | 7 | 22 | 13 |
| Overall | 695 | 23 | 18 |
Trocchi et al. BMC Cancer 2012 12:554 doi:10.1186/1471-2407-12-554
