Table 2.
Univariate analysis of factors potentially associated with overall survival
| Characteristics | HR | 95% CI | P-value |
|---|---|---|---|
| Age ≥65 years | 1.32 | 0.91–2.46 | 0.085 |
| Male | 0.95 | 0.74–2.60 | 0.228 |
| KPS score ≥70 | 2.32 | 1.51–4.12 | 0.009 |
| TNM stage IIIB | 1.24 | 0.87–1.94 | 0.013 |
| Current smoker | 0.84 | 0.51–1.85 | 0.182 |
| Receipt of induction chemotherapy | 0.73 | 0.32–1.54 | 0.797 |
| Receipt of concurrent chemotherapy | 0.88 | 0.45–1.84 | 0.791 |
| Pretreatment TLC ≥2.4×103/μL | 0.46 | 0.39–0.91 | 0.035 |
| Pretreatment NLR ≥3.4 | 1.87 | 1.19–2.63 | 0.010 |
| Pretreatment PLR ≥136.1 | 1.78 | 1.16–2.56 | 0.025 |
Abbreviations: HR, hazard ratio; KPS, Karnofsky Performance Status; NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio; TLC, total lymphocyte count.