Table IV.
Multivariate analysis of the prognostic factors for survival in patients with extensive-stage small-cell lung cancer.
| Characteristic | HR | 95% CI | P-value |
|---|---|---|---|
| Gender (female vs. male) | 1.096 | 0.693–1.732 | 0.696 |
| Age, years (<60 vs. ≥60) | 1.023 | 0.719–1.454 | 0.901 |
| KPS score (<80 vs. ≥80) | 0.999 | 0.655–1.493 | 0.958 |
| Smoking status (yes vs. no) | 0.836 | 0.608–1.203 | 0.368 |
| No. of ChT cycles (<4 vs. ≥4) | 0.440 | 0.279–0.712 | 0.001 |
| Treatment (ChT alone vs. ChT/TRT) | 0.607 | 0.418–0.880 | 0.008 |
| No. of ChT cycles (<6 vs. ≥6) | 1.006 | 0.673–1.468 | 0.975 |
| No. of metastasis organs (>2 vs. 1) | 0.791 | 0.563–1.108 | 0.172 |
HR, hazard ratio; CI, confidence interval; KPS, Karnofsky performance status; ChT, chemotherapy; ChT/TRT, chemotherapy combined with thoracic radiation therapy.