Table 4. Significant variables associated with survival on univariate analysis.
| Variable | P-value | Hazard ratio |
|---|---|---|
| Lymph nodes | ||
| 0 | — | 1 |
| 1–3 | 0.1 | 3.4 |
| >3 | 0.01 | 7.1 |
| Lymph nodes | ||
| Positive compared to negative | 0.03 | 5 |
| NPI (Blamey, 1996) | ||
| Continuous variable | 0.003 | 1.9 per unit increase in NPI |
| Stage | ||
| I | — | 1 |
| II | 0.22 | 2.6 |
| III+IV | 0.002 | 11.4 |
| CA 15.3 | ||
| Positive (>40) | 0.05 | 11.4 |
| Negative (⩽40) | — | 1 |
| Size | ||
| >50 mm | 0.04 | 2.9 |
| <50 mm | — | 1 |
| Margins | ||
| <10 | 0.05 | 0.13 |
| >10 | — | 1 |
| Gas6 mRNA | ||
| Above the mean | 0.99 | 0 |
| Below the mean | — | 1 |
| Gas6 mRNA | ||
| Above the median | 0.15 | 0.36 |
| Below the median | — | 1 |
NPI=Nottingham prognostic index.