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Table 5 Univariate and Multivariate Analyses for Overall Survival

From: The role of adjuvant pelvic radiotherapy in rectal cancer with synchronous liver metastasis: a retrospective study

Prognostic Factor

Group

OS (%)

Univariate

Multivariate

RR

95% CI

Age (years)

< 57

63

0.247

−

  
 

≥ 57

48

    

Duke stage

A or B

68

0.297

−

  
 

C

53

    

Rectal lateral margin

negative

59

0.078

0.029

2.2

1.1-4.5

 

positive

37

    

Initial CEA (ng/ml)

< 100

59

0.081

0.47

1.3

0.6-2.7

 

≥ 100

33

    

Liver resection

no

27

0.000

0.0

2.3

0.2-0.6

 

yes

76

    

Adjuvant pelvic RT

no

49

0.224

-

  
 

yes

70

    
  1. Abbreviations: CEA = carcinoembryonic antigen; OS = overall survival; RR = relative risk; CI = confidence interval