Table 2.
Univariable and multivariable analyses for cancer-specific mortality.
| Univariable analysis |
Multivariable analysis |
|||||
|---|---|---|---|---|---|---|
| HR | 95% Cl | P-value | HR | 95% Cl | P-value | |
| Sex | ||||||
| Male | 1 | reference | 1 | reference | ||
| Female | 0.850 | 0.730–0.989 | 0.035 | 0.877 | 0.752–1.022 | 0.092 |
| Age (years) | ||||||
| <65 | 1 | reference | 1 | reference | ||
| >64 | 1.333 | 1.127–1.576 | 0.001 | 1.397 | 1.174–1.662 | <0.001 |
| Location | ||||||
| Upper lobe | 1 | reference | 1 | reference | ||
| Middle lobe | 1.153 | 0.815–1.630 | 0.422 | 1.262 | 0.889–1.791 | 0.193 |
| Lower lobe | 1.272 | 1.081–1.499 | 0.004 | 1.131 | 0.957–1.336 | 0.149 |
| Other | 1.526 | 0.973–2.393 | 0.065 | 1.045 | 0.653–1.672 | 0.854 |
| Unknown | 0.931 | 0.415–2.086 | 0.861 | 1.013 | 0.446–2.301 | 0.974 |
| pT classification | ||||||
| T1 | 1 | reference | 1 | reference | ||
| T2a | 1.575 | 1.286–1.930 | <0.001 | 1.475 | 1.200–1.813 | <0.001 |
| T2b | 1.681 | 1.293–2.185 | <0.001 | 1.513 | 1.156–1.981 | 0.003 |
| T3 | 2.358 | 1.836–3.028 | <0.001 | 2.115 | 1.635–2.735 | <0.001 |
| T4 | 3.943 | 3.122–4.978 | <0.001 | 3.250 | 2.514–4.200 | <0.001 |
| Grade | ||||||
| I–II | 1 | reference | 1 | reference | ||
| III–IV | 1.267 | 1.077–1.491 | 0.004 | 1.155 | 0.980–1.363 | 0.086 |
| Unknown | 0.921 | 0.660–1.285 | 0.628 | 0.816 | 0.582–1.143 | 0.237 |
| Surgery Approach | ||||||
| Lobectomy | 1 | reference | 1 | reference | ||
| Pneumonectomy | 2.265 | 1.761–2.913 | <0.001 | 1.155 | 0.980–1.363 | 0.086 |
| Chemotherapy | ||||||
| No | 1 | reference | 1 | reference | ||
| Yes | 1.280 | 1.092–1.500 | 0.002 | 0.717 | 0.586–0.876 | 0.001 |
| Radiation | ||||||
| No | 1 | reference | 1 | reference | ||
| Yes | 1.728 | 1.417–2.106 | <0.001 | 1.214 | 0.958–1.537 | 0.107 |
| Unknown | 1.652 | 0.618–4.420 | 0.317 | 1.400 | 0.518–3.783 | 0.507 |
| LN indicator | ||||||
| pN0 #LNs ≤9 | 1 | reference | 1 | reference | ||
| pN0 #LNs >9 | 1.255 | 1.013–1.554 | 0.037 | 1.288 | 1.038–1.598 | 0.022 |
| pN+ #LNR ≤0.53 | 2.338 | 1.884–2.902 | <0.001 | 2.160 | 1.711–2.729 | <0.001 |
| pN+ #LNR >0.53 | 4.112 | 2.971–5.691 | <0.001 | 3.672 | 2.613–5.160 | <0.001 |
| Race | ||||||
| Caucasians | 1 | reference | ||||
| Others | 1.077 | 0.874–1.327 | 0.488 | |||
| Marital status | ||||||
| None | 1 | reference | ||||
| Married | 0.927 | .792–1.084 | 0.340 | |||
| Unknown | 0.726 | 0.416–1.268 | 0.261 | |||
HR, hazard ratio; CI, confidence interval; LN, lymph node; LNR, lymph node ratio; pT, pathological T; pN, pathological N.
The method of Cox regression was “Enter selection”.