| Total (n = 2954) | PRE (n = 1493) | POST (n = 1461) | p-valueb |
---|---|---|---|---|
Histologic grade, n (%) | ||||
 Grade 1 | 383 (13.0%) | 169 (11.3%) | 214 (14.6%) | 0.016 |
 Grade 2 | 1171 (39.6%) | 590 (39.5%) | 581 (39.8%) |  |
 Grade 3 | 1400 (47.4%) | 734 (49.2%) | 666 (45.6%) |  |
Age (y)a | 59.8 (10.3) | 59.8 (10.5) | 59.8 (10.1) | 0.922 |
Sex, n (%) | Â | Â | Â | 0.790 |
 Female | 2943 (99.6%) | 1487 (99.6%) | 1456 (99.7%) |  |
 Male | 11 (0.4%) | 6 (0.4%) | 5 (0.3%) |  |
Tumor size (cm)a | 2.5 (2.3) | 2.5 (2.3) | 2.5 (2.3) | 0.321 |
Type of surgery, n (%) | Â | Â | Â | 0.096 |
 Mastectomy | 944 (32.0%) | 456 (30.5%) | 488 (33.4%) |  |
 Breast conserving | 2010 (68.0%) | 1037 (69.5%) | 973 (66.6%) |  |