Factors Associated with DFS
| Univariate analysis | Multivariate analysis | ||||||||
| Risk factor for recurrence | Total no. of patients | Patients with disease recurrence | Median DFS (mo) | P | Hazard ratio | 95% CI* for hazard ratio | P | Hazard ratio | 95% CI* for hazard ratio |
| Age (y) | |||||||||
| <45 | 21 | 3 | 34.0 | — | 1.00 | — | |||
| ≥45 | 44 | 9 | 34.0 | 0.6071 | 1.41 | 0.42–4.73 | |||
| T stage | |||||||||
| T1, T2 | 58 | 8 | 34.0 | — | 1.00 | — | — | 1.00 | — |
| T3, T4 | 7 | 4 | 22.0 | 0.0029 | 5.10 | 0.70–37.14 | 0.8573 | 1.16 | 0.23–5.97 |
| N stage | |||||||||
| N1 | 40 | 3 | 35.5 | — | 1.00 | — | — | 1.00 | — |
| N2, N3 | 25 | 9 | 30.0 | 0.0055 | 5.20 | 1.61–16.85 | 0.9797 | 0.98 | 0.15–6.27 |
| ER | |||||||||
| Positive | 48 | 5 | 35.5 | — | 1.00 | — | — | 1.00 | — |
| Negative | 17 | 7 | 32.0 | 0.0017 | 5.17 | 1.30–20.57 | 0.2805 | 2.21 | 0.53–9.25 |
| HER2 | |||||||||
| Negative | 45 | 9 | 34.0 | — | 1.00 | — | |||
| Positive | 20 | 3 | 34.0 | 0.6472 | 0.74 | 0.28–2.51 | |||
| Primary-tumor SUVmax† | |||||||||
| ≤6.9 | 45 | 5 | 35.0 | — | 1.00 | — | — | 1.00 | — |
| >6.9 | 20 | 7 | 29.0 | 0.0121 | 3.88 | 1.08–13.99 | 0.9757 | 1.02 | 0.27–3.91 |
| Nodal SUVmax‡ | |||||||||
| ≤2.8 | 47 | 1 | 36.0 | — | 1.00 | — | — | 1.00 | — |
| >2.8 | 18 | 11 | 22.0 | <0.0001 | 38.95 | 9.94–152.59 | 0.0065 | 31.54 | 2.66–373.39 |