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Table 2 Median survival by UICC stage (n = 98) using the sixth and seventh editions of the TNM classification

From: Comparison of the sixth and the seventh editions of the UICC classification for intrahepatic cholangiocarcinoma

UICC

N (%)

Median survival in months (range)

Log-rank test (p value)

Cox regression analysis (p value)

1-year survival (%)

3-year survival (%)

5-year survival (%)

6th edition

  

0.005

0.053

   

 I

43 (43.9%)

47.30 (0.30–149.29)

  

88.4

46.5

23.3

 II

8 (8.2%)

18.85 (0.32–97.05)

  

75.0

12.5

12.5

 III

45 (45.9%)

19.90 (0.16–150.11)

  

64.4

28.9

8.9

 IV

2 (2.0%)

15.30 (2.70–27.89)

  

50.0

0.0

0.0

7th edition

  

0.006

0.082

   

 I

41 (41.8%)

54.90 (0.30–149.29)

  

87.8

48.8

24.4

 II

26 (26.5%)

19.90 (0.23–97.10)

  

61.5

19.2

11.5

 III

3 (3.1%)

17.20 (5.30–43.20)

  

66.7

33.3

0.0

 IV

28 (28.6%)

23.15 (2.70–150.10)

  

71.4

28.6

7.1

  1. Survival was calculated using the Kaplan–Meier method and compared using the log-rank test. Cox proportional hazards regression analysis was performed to evaluate the prognostic value of the UICC stage according to the sixth and seventh editions