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Factors associated with recurrence,univariate analysis using Cox regression model
| Variable | Univariate HR | P |
|---|---|---|
| Age (yr) | ||
| ≤40 | 1.32 | .334 |
| 41-60 | Ref | - |
| ≥61 | - | - |
| Tumor size (mm) | ||
| ≤15 | - | - |
| 16-40 | Ref | - |
| ≥41 | 6.88 | .001 |
| Tumor grade | ||
| 1 | - | - |
| 2 | Ref | - |
| 3 | 9.07 | .003 |
| Margin (mm) | ||
| >9 | 1.39 | .499 |
| 1-9 | Ref | - |
| <1 | - | - |
| Receptor status | ||
| ER positive | Ref | - |
| ER negative | 11.75 | .003 |
| C-erbB2 | ||
| ≤2+ | Ref | - |
| 3+ | 1.15 | .284 |
| VNPI score | ||
| 4-6 | - | - |
| 7-9 | .417 | .519 |
| 10-12 | Ref | - |
| Radiation | ||
| Yes | Ref | - |
| No | 1.77 | .183 |
