Table 1.
Characteristics of the Total Population
| Characteristic | All Patients | Node - | Node + | P Value | |
|---|---|---|---|---|---|
| Age (SD) | 48.45 (11.4) | 48.15 (11.52) | 48.62 (11.34) | 0.9 | |
| Tumor Size (%) | T1 | 163 (21.1) | 97 (35.3) | 66 (13.2) | <0.001 |
| T2 | 611 (78.9) | 178 (64.7) | 433 (86.8) | ||
| LVI (%) | Negative | 375 (55.5) | 185 (75.2) | 190 (44.2) | 0.001 |
| Positive | 301 (44.5) | 61 (24.8) | 240 (55.8) | ||
| Tumor Grade (%) | 1,2 | 480 (67) | 190 (74) | 290 (63.2) | 0.004 |
| 3 | 236 (33) | 67 (26.1) | 169 (36.8) | ||
| ER/PR (%) | Negative | 183 (23.7) | 76 (27.6) | 107 (21.5) | 0.063 |
| Positive | 589 (76.3) | 199 (72.4) | 390 (78.5) | ||
| HER 2 (%) | Negative | 451 (74.3) | 172 (80.4) | 279 (71) | 0.012 |
| Positive | 156 (25.7) | 42 (19.6) | 114 (29) | ||
| Pathology (%) | IDC | 701 (92) | 244 (90.7) | 457 (92.7) | 0.61 |
| ILC | 43 (5.6) | 18 (6.7) | 25 (5.1) | ||
| Mixed | 18 (2.4) | 7 (2.6) | 11 (2.2) |
ER, estrogen receptor; PR, progesterone receptor; LVI, Lymphovascular invasion; IDC, Invasive ductal carcinoma; ILC, Invasive lobular carcinoma