TABLE 4.
Cox proportional regression on overall survival
| Risk factor | p‐value | Hazard ratio | 95% confidence interval | |
|---|---|---|---|---|
| Lower limit | Upper limit | |||
| Sex | 0.041 | 4.613 | 1.062 | 20.029 |
| Smoking | 0.851 | 1.130 | 0.318 | 4.017 |
| T stage | 0.550 | 1.366 | 0.491 | 3.798 |
| Recurrence | 0.773 | 1.173 | 0.396 | 3.469 |
| Age over 80 years old | 0.359 | 0.623 | 0.227 | 1.712 |
| synchronous cancer | 0.416 | 1.748 | 0.456 | 6.704 |
| Adenocarcinoma c/unknown EGFR | 0.365 | n/a | n/a | n/a |
| Adenocarcinoma c/EGFR mutation | 0.277 | 0.273 | 0.026 | 2.833 |
| Adenocarcinoma c/EGFR wild | 0.977 | 1.035 | 0.101 | 10.653 |
| Squamous cell carcinoma | 0.834 | 0.773 | 0.070 | 8.556 |
| others: one adenosquamous carcinoma and one NSCLC | 0.296 | 0.252 | 0.019 | 3.352 |
Abbreviations: EGFR, epidermal growth factor receptor status; n/a, not available; NSCLC, non‐small cell lung cancer.