Table 1. Characteristics of 943 patients with triple negative breast cancer between 2008 and 2012.
| Characteristics | Total patients | Lymph node status | p-value | ||
|---|---|---|---|---|---|
| ln0 | ln1-3 | ln≥4 | |||
| 943, n(%) | 504(53.5) | 237(25.1) | 202(21.4) | ||
| Age(years) | |||||
| ≤45 | 295(31.3) | 149 | 85 | 61 | 0.21 |
| >45 | 648(68.7) | 355 | 152 | 141 | |
| Tumor size | |||||
| T≤2cm | 417(44.2) | 299 | 72 | 46 | <0.0001 |
| 2cm<T≤5cm | 526(55.8) | 205 | 165 | 156 | |
| Ki67 | |||||
| <14% | 256(27.1) | 132 | 58 | 66 | 0.122 |
| ≥14% | 687(72.9) | 372 | 179 | 136 | |
| p53 | |||||
| positive | 581(61.6) | 320 | 136 | 125 | 0.279 |
| negative | 362(36.4) | 184 | 101 | 77 | |
| Histological grade | |||||
| G1-G2 | 785(83.2) | 448 | 203 | 134 | <0.0001 |
| G3 | 158(16.8) | 56 | 34 | 68 | |
| Post-operative radiotherapy | |||||
| Yes | 191(20.3) | 38 | 39 | 114 | <0.0001 |
| No | 752(79.7) | 466 | 198 | 88 | |
| Surgery | |||||
| Breast-conserving surgery | 38(4.0) | 38 | * | * | — |
| Mastectomy | 905(96.0) | 466 | 237 | 202 | |
| Chemotherapy | |||||
| Yes | 943 | 504 | 237 | 202 | — |
| No | * | * | * | * | |
*the patients who were not conform to the criteria or too few were excluded.