Table 2 Multivariate cox regression model analysis of OS for nomogram.

From: Prognostic model for early-onset colorectal cancer with liver metastasis after primary tumor resection and chemotherapy

Variables

Multivariate alysis

HR

95%CI

P value

Marital.status

 Married

Reference

 Unmarried/Single

1.48

1.24, 1.78

 < 0.001

 Divorced/Separated/Widowed

1.29

1.01, 1.65

0.046

Site

 Left-side

Reference

 Right-side

1.34

1.11, 1.61

0.002

Rectum

0.87

0.69, 1.14

0.32

T

 T1

Reference

 T2

0.51

0.28,0.95

0.034

 T3

0.68

0.43,1.08

0.105

 T4

0.88

0.54,1.41

0.589

N

 N0

Reference

 N1

1.36

1.06,1.75

0.017

 N2

1.89

1.47,2.43

 < 0.001

Radiotherapy

 None/Unknown

Reference

 Yes

0.82

0.62,1.10

0.189

CEA

 Negative

Reference

 Positive

1.63

1.27,2.08

 < 0.001

 Unknown

1.49

1.14,1.96

0.004

Regional nodes examined

  > 17

Reference

  ≤ 17

1.32

1.12,1.56

0.001

Bone metastasis

 No

Reference

 Yes

2.04

1.23,3.39

0.006

Lung metastasis

 No

Reference

 Yes

1.64

1.32,2.03

 < 0.001

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