Table 3 Results of survival analysis

Gender (Male vs Female)

<0.001

<0.001

2.40

1.55–3.81

Age (≥70 years)

<0.001

<0.001

2.55

1.78–3.69

PS (2 vs. 0–1)

<0.001

0.036

1.85

1.04–3.09

H–J classification (3 vs. 1–2)

0.070

–

–

–

Smoking

0.001

0.487

–

–

ABG (Abnormal vs. Normal)

0.002

0.006

1.61

1.14–2.26

Predicted post PFT^a)

0.016

0.059

–

–

Histology (others vs. Ad)

0.017

0.011

1.65

1.12–2.44

Differentiation (m/p vs well)

<0.001

0.014

1.71

1.11–2.71

p-Stage (IB vs IA)

<0.001

0.002

1.74

1.23–2.48

Operative procedures^b)

0.470

–

–

–

Location

0.268

–

–

–

Postoperative complication

0.017

0.320

–

–

Adjuvant therapy

0.629

–

–

–

 Hypertension

0.533

–

–

–

 Diabetes mellitus

0.652

–

–

–

 eGFR (<60 ml/min/1.73 m²)

0.078

–

–

–

 Child-Pugh classification (B or C)

0.031

0.389

–

–

 Cardiac disease

0.011

0.241

–

–

 Cerebral disease

0.010

0.594

–

–

 Any prior tumors

<0.001

<0.001

3.49

2.37—5.10