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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