Table 1 Patient characteristics
Characteristic | All patients | Patients with pCR | Patients with non-pCR | P value |
|---|---|---|---|---|
No. of patients | 144 | 54 (37.5) | 90 (62.5) | Â |
Age (y) | ||||
 Mean ± standard deviation | 51.7 ± 11.8 | 51.5 ± 12.0 | 51.9 ± 11.7 | 0.876 |
 Range | 25–75 | 26–73 | 25–75 |  |
Menopause | ||||
 Premenopausal | 58 (40.3) | 19 (35.2) | 39 (43.3) | 0.334 |
 Postmenopausal | 86 (59.7) | 35 (64.8) | 51 (56.7) | |
Histologic type | ||||
 IDC | 132 (91.7) | 51 (94.4) | 81 (90.0) | 0.535 |
 Non-IDC | 12 (8.3) | 3 (5.6) | 9 (10.0) | |
Estrogen receptor | ||||
 Negative | 53 (36.8) | 35 (64.8) | 18 (20.0) | < 0.001 |
 Positive | 91 (63.2) | 19 (35.2) | 72 (80.0) | |
Progesterone receptor | ||||
 Negative | 44 (30.6) | 24 (44.4) | 20 (22.2) | 0.005 |
 Positive | 100 (69.4) | 30 (55.6) | 70 (77.8) | |
Human epidermal growth factor receptor 2 | ||||
 Negative | 81 (56.3) | 21 (38.9) | 60 (66.7) | 0.001 |
 Positive | 63 (43.8) | 33 (61.1) | 30 (33.3) | |
Ki-67 | ||||
 < 20% | 26 (18.1) | 2 (3.7) | 24 (26.7) | < 0.001 |
 ≥ 20% | 118 (81.9) | 52 (96.3) | 66 (73.3) | |