Table 2.
Analysis of correlation factors with RFS
| Factors | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| All patients(n = 254) | HR | 95% CI | P Value | HR | 95% CI | P Value |
| Age at diagnosis | ||||||
| ≤ 50 | 1 | 1 | ||||
| > 50 | 2.097 | 1.254–3.507 | 0.005 | 1.891 | 1.098–3.257 | 0.022 |
| Clinical stage | ||||||
| II | 1 | 1 | ||||
| III | 2.171 | 1.256–3.751 | 0.005 | 1.597 | 0.875–2.913 | 0.127 |
| Pathologic T stage after NAC | < 0.001 | 0.023 | ||||
| ypT0 | 1 | 1 | ||||
| ypT1 | 1.157 | 0.623–2.148 | 0.645 | 0.592 | 0.288–1.216 | 0.154 |
| ypT2 | 1.432 | 0.724–2.832 | 0.302 | 0.542 | 0.240–1.221 | 0.139 |
| ypT3 | 10.484 | 2.445–44.957 | 0.002 | 2.023 | 0.389–10.512 | 0.402 |
| ypT4 | 10.677 | 3.161–36.058 | < 0.001 | 3.837 | 0.996–14.777 | 0.051 |
| Pathologic N stage after NAC | < 0.001 | 0.167 | ||||
| ypN0 | 1 | 1 | ||||
| ypN1 | 2.084 | 1.015–4.278 | 0.045 | 1.354 | 0.565–3.247 | 0.497 |
| ypN2 | 4.431 | 2.218–8.850 | < 0.001 | 1.933 | 0.811–4.604 | 0.137 |
| ypN3 | 7.267 | 3.213–16.439 | < 0.001 | 2.895 | 1.064–7.873 | 0.037 |
| LVI | ||||||
| Negative | 1 | 1 | ||||
| Positive | 2.755 | 1.566–4.847 | < 0.001 | 1.384 | 0.748–2.562 | 0.300 |
| RCB system | < 0.001 | 0.003 | ||||
| 0 | 1 | 1 | ||||
| I | 0.581 | 0.117–2.880 | 0.506 | 0.712 | 0.141–3.591 | 0.680 |
| II | 2.601 | 1.054–6.418 | 0.038 | 3.270 | 1.228–8.707 | 0.018 |
| III | 4.946 | 2.051–11.926 | < 0.001 | 5.108 | 1.838–14.199 | 0.002 |
Abbreviations: LVI Lymphatic vessel invasion