Table 2 Univariate and multivariate analyses of the OS in all patients
Characteristics | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
HR (95%CI) | P-value | HR (95%CI) | P-value | |
Age | Â | 0.026 | Â | 0.235 |
 ≤ 60 | 1 |  | 1 |  |
 > 60 | 5.371(1.227–23.514) |  | 2.525(0.547–11.661) |  |
Sex | Â | 0.011 | Â | 0.240 |
 Female | 1 |  | 1 |  |
 Male | 6.784(1.551–29.673) |  | 3.002(0.480-18.782) |  |
Smoking status | Â | 0.003 | Â | 0.876 |
 Never | 1 |  | 1 |  |
 Former or current | 4.928(1.733–14.014) |  | 1.115(0.283–4.396) |  |
Histology | Â | 0.016 | Â | 0.300 |
 SCC | 1 |  | 1 |  |
 ADC | 3.639(1.266–10.456) |  | 2.317(0.473–11.358) |  |
Tumor size | Â | 0.006 | Â | 0.025 |
 ≤3 | 1 |  | 1 |  |
 >3 | 4.815(1.569–14.769) |  | 4.538(1.212–16.988) |  |
Location | Â | 0.466 | Â | Â |
 Left lung | 1 |  |  |  |
 Right lung | 1.448(0.535–3.915) |  |  |  |
Visceral pleura | Â | 0.994 | Â | Â |
 Negative | 1 |  |  |  |
 Positive | 0.996(0.367–2.701) |  |  |  |
N1 nodes involved | Â | 0.375 | Â | Â |
 No | 1 |  |  |  |
 Yes | 1.661(0.541–5.098) |  |  |  |
Involved N2 stations | Â | 0.684 | Â | Â |
 Single | 1 |  |  |  |
 Multiple | 0.805(0.284–2.287) |  |  |  |
LNR | Â | 0.804 | Â | Â |
 ≤ 50% | 1 |  |  |  |
 > 50% | 0.854(0.245–2.974) |  |  |  |
EGFR status | Â | 0.012 | Â | 0.097 |
 Wild-type | 1 |  | 1 |  |
 Mutant | 0.190(0.052–0.692) |  | 0.303(0.074–1.240) |  |
PORT | Â | 0.819 | Â | Â |
 No | 1 |  |  |  |
 Yes | 0.877(0.286–2.692) |  |  |  |