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Multivariate analyses of factors that contributed to the overall survival rates
| Variables | HR | 95%CI | P value |
| Age < 60 | 1.129 | 0.981-1.282 | 0.121 |
| PHT | 1.228 | 0.908-1.556 | 0.262 |
| NLR ≥ 4 | 1.431 | 0.992-1.781 | 0.128 |
| Tumor diameter > 6 cm | 1.328 | 1.002-1.783 | 0.048 |
NLR: Neutrophil-lymphocyte ratio.
