Multivariate Cox regression model for vascular invasion, TNM stage and nuclear STAT1 expression
| Variable | Category | HR | 95% CI | p Value |
| Vascular invasion | Negative | 1 | <0.001 | |
| Positive | 2.15 | 1.46 to 3.1 | ||
| TNM stage | I and II | 1 | <0.001 | |
| III and IV | 3.1 | 2.07 to 4.75 | ||
| Nuclear STAT1 | Negative | 1 | 0.007 | |
| Positive | 0.48 | 0.28 to 0.81 |