Table 5 Results of Cox regression analysis (stepwise forward method) summarizing significant independent prognostic factors for RFS
Factor | Hazard ratio | 95% confidence interval | P |
|---|---|---|---|
Gastrointestinal bleeding | Â | Â | Â |
  No | 1.00 |  |  |
  Yes | 3.85 | 1.63 to 9.10 | 0.002 |
Tumor size | Â | Â | 0.023* |
  ≤5 cm | 1.00 |  |  |
  5.1 to 10 cm | 1.86 | 0.67 to 5.15 | 0.232 |
  >10 cm | 6.71 | 1.70 to 26.51 | 0.007 |
Mitotic index | Â | Â | 0.002* |
  0 to 5 (per 50 high power fields) | 1.00 |  |  |
  5.1 to 10 (per 50 high power fields) | 5.72 | 2.09 to 15.64 | 0.001 |
  >10 (per 50 high power fields) | 3.44 | 1.13 to 10.45 | 0.029 |