Table 4:
Multivariate analysis of risk factors for survival
| Variables | HR | 95% CI |
P-value | |
|---|---|---|---|---|
| Lower CI | Upper CI | |||
| Involvement of nodal zone | 7.404 | 3.263 | 16.936 | <0.001 |
| Metastasis of #3A LNs | 2.702 | 1.008 | 7.242 | 0.027 |
| Involvement of nodal station | 0.908 | 0.091 | 9.014 | 0.934 |
| Metastasis of #4 LNs | 0.935 | 0.308 | 2.838 | 0.626 |
| Metastasis of #7 LNs | 0.811 | 0.350 | 1.883 | 0.905 |
| Histopathology | 0.704 | 0.339 | 1.460 | 0.346 |
HR: hazard ratios; CI: confidence intervals; #: the station number of mediastinal lymph nodes; LNs: lymph nodes.