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Table 2 Univariate and multivariate analysis for overall survival and disease-free survival in this study

From: The effect of laparoscopic surgery in stage II and III right-sided colon cancer: a retrospective study

  

Overall survival

Disease-free survival

  

3-yr- (%)

5-yr (%)

10-yr (%)

P value

3-yr (%)

5-yr (%)

10-yr (%)

P value

Univariate

Multivariate

Univariate

Multivariate

Group

I

86.1

82.5

61.1

  

87.5

85.6

81.2

  
 

II

70.3

66.7

59.3

  

66.7

62.9

62.9

  
 

III

77.2

71.2

64.9

0.655

NS

82.8

81.5

81.5

0.102

NS

Location

Cecum

82.1

79.5

63.4

  

84.6

78.6

78.6

  
 

Ascending

79.1

71.9

57.8

  

81.8

80.3

73.9

  
 

Hepatic flexure

77.9

75.6

59.4

  

81.3

81.3

81.3

  
 

Proximal transverse

73.7

66.9

58.6

0.736

NS

78.6

78.6

78.6

0.968

NS

Approach

Open

78.3

73.4

57.5

  

81.6

78.4

75.3

  
 

Lap

79.4

74.8

66.3

0.884

 

82.2

82.2

82.2

0.518

NS§

Vessel ligation

Low ligation

76.9

69.2

55.4

  

69.2

69.2

69.2

  
 

High ligation

78.9

74.1

63.8

0.834

NS

83.1

83.1

83.1

0.185

NS

Stage

II

87.6

81.8

66.6

  

89.1

87.9

83.9

  
 

III

64.8

61.6

45.5

0.004

NS

69.9

66.2

66.2

<0.001

NS

Pathologic T

2

60.0

60.0

60.0

  

60.0

60.0

60.0

  
 

3

82.4

78.2

62.3

  

84.3

82.6

80.5

  
 

4

56.2

45.4

31.1

0.003

NS

67.3

60.6

52.9

0.015

NS

Pathologic N

0

87.3

81.3

66.9

  

89.6

88.3

84.1

  
 

1

72.4

70.1

48.2

  

80.9

80.9

80.9

  
 

2

55.2

50.6

43.4

0.008

NS

53.1

44.6

44.6

<0.001

NS

Differentiation

Well

85.2

79.5

68.5

  

88.4

84.4

80.7

  
 

Moderately

79.9

75.1

50.8

  

83.3

83.3

83.3

  
 

Poorly

60.9

56.2

45.4

  

65.9

59.9

53.9

  
 

Mucinous

72.7

72.7

60.6

0.091

NS

66.7

66.7

66.7

0.025

NS

Lymphatic invasion

No

83.9

79.6

63.6

  

87.4

87.4

87.4

  
 

Yes

64.2

59.7

45.3

0.004

0.005

65.4

63.2

63.2

<0.001

<0.001

Venous invasion

No

79.7

75.1

58.4

  

83.6

82.8

82.8

  
 

Yes

25.0

25.0

25.0

<0.001

0.001

12.5

12.5

12.5

<0.001

<0.001

Perineural invasion

No

80.5

77.1

59.1

  

82.9

82.9

82.9

  
 

Yes

56.5

46.3

46.3

0.029

NS

62.2

55.9

55.9

0.006

NS

Lymph node retrieval

<12

58.3

52.5

45.9

  

62.8

62.8

62.8

  
 

≥12

83.3

78.8

62.3

0.012

0.031

85.9

83.4

80.5

0.002

<0.001

Adjuvant CTx

No

69.7

62.1

36.5

  

82.6

82.6

82.6

  
 

Yes

80.3

76.1

65.1

0.008

NS

81.4

79.0

75.9

0.621

NS

Reoperation

No

79.4

74.5

60.1

  

82.1

79.9

77.4

  
 

Yes

50.0

50.0

25.0

0.041

NS

75.0

75.0

75.0

0.463

NS

Preoperative CEA

≤5

89.1

83.5

68.1

  

89.8

87.5

82.3

  
 

>5

64.7

62.5

49.1

0.003

0.031

68.2

65.2

65.2

<0.001

<0.001

Postoperative CEA

≤5

83.1

77.8

65.1

  

82.8

80.0

75.8

  
 

>5

52.9

52.9

52.9

0.018

NS

64.2

64.2

64.2

0.051

NS

  1. CEA, Carcinoembryonic antigen; CTx, Chemotherapy; NS, Not significant.