Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Multivariable Cox regression analysis stratified by tumor staging, chemotherapy treatment, and nodal involvement
| Covariates | Hazard ratio | 95% confidence interval | P-value |
|---|---|---|---|
| Age | 1.0 | 0.9–1.0 | 0.556 |
| Male | 1.0 | 0.7–1.5 | 0.837 |
| Tumor necrosis | 2.1 | 1.3–3.4 | 0.001 |
| Intratumoral blood vessel invasion | 2.1 | 1.4–3.2 | 0.001 |
| Intratumoral lymphatic invasion | 1.0 | 0.5–1.7 | 0.825 |
| Tumor diameter >5 cm | 1.9 | 1.0–3.5 | 0.033 |
