Table 2 Results of multivariate analysis for OS and DFS

Age

1.03 (1.01–1.04)

0.001

1.02 (1.01–1.04)

0.003

Smoking status

 Never

Reference

 Smoker

1.58 (1.09–2.30)

0.017

T classification

 T1/2

Reference

Reference

 T3

1.70 (1.09–2.65)

0.020

1.52 (1.00-2.29)

0.048

 T4

2.36 (1.49–3.73)

0.001

2.00 (1.30–3.09)

0.002

RLND

1.36 (1.03–1.80)

0.031

1.30 (1.00-1.69)

0.047

LLI

 No

Reference

Reference

 Yes

2.12 (1.39–3.25)

0.001

1.89 (1.26–2.83)

0.002

LNN

 No

Reference

Reference

 Yes

1.84 (1.26–2.67)

0.001

1.72 (1.20–2.45)

0.003

LYMPH

0.73 (0.56–0.96)

0.022

0.75 (0.58–0.96)

0.023