Table 2. Unadjusted 5-year survival outcomes and hazard ratios by Cox regression analysis.
| Staging system | Group | No | 5-year DFS (%) | HR (95% CI) | 5-year DSS (%) | HR (95% CI) |
|---|---|---|---|---|---|---|
| RCB class | 0/pCR | 101 | 95.9 | Ref | 96.5 | Ref |
| I | 74 | 91.4 | 2.28 (0.64–8.09)* | 94.2 | 1.51 (0.30–7.47)* | |
| II | 161 | 82.5 | 5.89 (2.08–16.68) | 91.0 | 3.82 (1.11–13.12) | |
| III | 87 | 55.5 | 16.97 (6.08–47.37) | 69.9 | 12.68 (3.82–41.72) | |
| Miller-Payne system | G5 | 116 | 92.9 | Ref | 93.7 | Ref |
| G4 | 88 | 86.2 | 2.59 (1.09–6.19) | 95.1 | 0.99 (0.28–3.52)* | |
| G3 | 111 | 74.4 | 4.81 (2.21–10.52) | 83.6 | 4.32 (1.74–10.73) | |
| G2 | 37 | 83.0 | 3.79 (1.46–9.83) | 89.0 | 2.75 (0.84–9.04)* | |
| G1 | 71 | 68.2 | 5.73 (2.56–12.83) | 79.5 | 3.76 (1.42–10.09) |
*, P>0.05. CI, confidence intervals; RCB, residual cancer burden; pCR, pathologic complete response; DFS, disease-free survival; DSS, disease-specific survival.