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Table 5 Survival rates according to various RPA scores

From: Survival risk prediction model for patients with pT1–3 N0M0 esophageal squamous cell carcinoma after R0 esophagectomy with two-field lymphadenectomy for therapeutic purposes

 

Class

(RPA scores)

1

Year

3

5

8

x2

p

OS

Class 1 (0–1)

100

97.4

94.7

93.4

50.845

< 0.001

Class 2 (2)

91.1

74.8

65.2

60.6

  

Class 3 (3–5)

92.4

65.3

51.6

44.4

  

DFS

Class 1

97.4

92.1

77.6

68.2

28.295

< 0.001

Class 2

85.2

65.9

57.8

52.6

  

Class 3

78.7

54.9

44.0

37.2

  

RFS

Class 1

97.4

92.1

78.9

69.3

21.821

< 0.001

Class 2

87.3

70.9

64.5

58.6

  

Class 3

81.7

59.6

49.3

43.4

  

LRFS

Class 1

98.7

94.7

85.2

76.6

20.705

< 0.001

Class 2

88.7

75.3

71.9

67.4

  

Class 3

83.7

66.1

56.7

51.2

  
  1. Abbreviations: RPA recursive partitioning analysis, OS overall survival, DFS disease-free survival, RFS recurrence-free survival, LRFS locoregional recurrence-free survival