Table 3.
Multivariate analysis of factors associated with OS and DFS
| OS | DFS | |||||
|---|---|---|---|---|---|---|
|
|
||||||
| P value | HR | 95% CI | P value | HR | 95% CI | |
| Smoking (Heavy) | 0.003 | 2.186 | 1.309-3.650 | 0.001 | 2.471 | 1.467-4.163 |
| Diameter (≥3 cm) | 0.212 | 1.669 | 0.746-3.734 | 0.236 | 1.583 | 0.741-3.385 |
| TNM stage (III/IV) | 0.001 | 2.355 | 1.417-3.915 | <0.001 | 3.195 | 1.959-5.213 |
| Treatment regimen (Surgery plus postoperative R/C/CRT) | 0.032 | 1.786 | 1.051-3.034 | 0.087 | 1.583 | 0.935-2.182 |
OS: overall survival; DFS: disease-free survival; R: radiotherapy; C: chemotherapy; CRT: chemoradiotherapy.