Table 2 Univariate cox regression model for PFS in training set

Age

0.993

0.974–1.013

0.493

Gender (male vs. female)

1.697

1.060–2.716

0.028

Smoking (Yes vs. No)

1.418

0.930–2.162

0.105

Tumor location (peripheral vs. central)

0.794

0.521–1.210

0.283

T stage

 1

-

 2

0.786

0.432–1.430

0.430

 3

0.896

0.430–1.867

0.770

 4

1.221

0.681–2.188

0.502

N stage

 0

-

 1

0.318

0.059–1.717

0.183

 2

0.774

0.303–1.973

0.591

 3

0.831

0.327–2.112

0.698

cTNM stage

 IIIA

-

 IIIB

1.079

0.665–1.750

0.759

 IIIC

1.639

0.909–2.956

0.101

Pathology (ADC vs. SCC)

0.718

0.472–1.090

0.120

CEA

1.009

1.003–1.016

0.004

NSE

1.013

0.987–1.040

0.322

Cyfra21-1

1.025

0.995–1.056

0.100

Lymphocyte

0.715

0.496–1.031

0.073

Neutrophil

1.181

1.035–1.348

0.013

Monocyte

1.797

0.681–4.742

0.237

Platelet

1.002

1.000-1.005

0.112

LMR

0.993

0.880–1.122

0.914

NLR

1.148

1.035–1.273

0.009

PLR

1.002

1.000-1.005

0.027

SII

1.001

1.000-1.001

0.001

SUVmax

1.050

1.013–1.088

0.008

SUVmean

1.406

1.215–1.627

< 0.001

MTV

1.006

1.002–1.010

0.002

TLG

1.002

1.001–1.002

< 0.001