Table 4 Multivariate analysis for recurrence-free survival (RFS) and overall survival (OS)

Normal ECOG

0.5212

0.28515

0.9526

0.521

0.4027

0.2384

0.6804

< 0.001

No smoking history

0.4191

0.09899

1.7739

0.237

0.4887

0.1733

1.3786

0.176

Chemotherapy

(full dose)

0.9337

0.50318

1.7328

0.828

0.8130

0.4757

1.3892

0.449

Tumor volume

1.0111

1.00454

1.0177

0.036

1.0077

1.0016

1.0138

0.013

NLR

3.0218

1.67305

5.4579

< 0.001

1.7333

1.0462

2.8718

0.033