Table 1.
Sample cohort
| Number | Median age (range)1 | Imaging category 2/3 (%) | Imaging category 4 (%)2 | |
|---|---|---|---|---|
| ADH | 61 | 54 (41–75) | 35 (79.5) | 9 (20.5) |
| ADH upgrade | 47 | 58 (40–79) | 22 (75.9) | 7 (24.1) |
| FEA/Radial Scar | 28 | 52 (42–70) | 18 (85.7) | 3 (14.3) |
| FEA/Radial Scar upgrade | 5 | 61 (52–67) | 5 (100) | 0 (0) |
| Benign IDP | 109 | 53 (23–81) | 79 (81.4) | 18 (18.6) |
| Benign IDP upgrade | 7 | 59.5 (46–72) | 5 (83.3) | 1 (16.7) |
| IDP + atypia | 31 | 59 (28–84) | 14 (70) | 6 (30) |
| IDP + atypia upgrade | 19 | 58 (36–77) | 14 (82.4) | 3 (17.6) |
| Benign ductal | 37 | 55 (31–72) | 9 (69.2) | 4 (30.8) |
(1) P value = 0.004 for all upgraded B3 vs. not upgraded B3 (excluding benign ductal); two-sided t-test. (2) P value = 1 for all upgraded B3 vs. not upgraded, combining category 2 and 3 and comparing to category 4; Chi-squared test