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Table 1 Patients characteristics

From: Development and external validation of a nomogram for predicting the effect of tumor size on survival of patients with perihilar cholangiocarcinoma

Characteristic Training cohort Validation cohort P value
No.patients % No.patients %  
Age < 60 106 29.2 44 33.3 0.376
≥60 257 70.8 88 66.7  
Race White 265 73.0    
Black 26 7.2    
Others 72 19.8    
Sex Female 136 37.5 41 31.1 0.204
Male 227 62.5 91 68.9  
Grade Well/moderate 217 59.8 61 46.2 < 0.001
Poor/undifferentiated 102 28.1 68 51.5  
Unknown 44 12.1 3 2.3  
T stage T1 55 15.2 8 6.1 < 0.001
T2 175 48.2 80 60.6  
T3 50 13.8 30 22.7  
T4 24 6.6 10 7.6  
Tx 59 16.3 4 3.0  
M stage M0 345 95 130 98.5 0.119
M1 18 5 2 1.5  
RN status RN examined and not positive 169 46.6 71 53.8 0.253
RN examined and < 4 nodes positive 114 31.4 40 30.3  
RN examined and > =4 nodes positive 34 9.4 12 9.1  
RN not examined or RN unknown 46 12.7 9 6.8  
Vascular Invasion Absent 315 86.8 84 63.6 0.399
Present 48 13.2 48 36.4  
Tumor size 1–19 mm 88 24. 29 22.0 0.871
20-33 mm 160 44.1 60 45.5  
≥34 mm 115 31.7 43 32.6  
  1. RN Regional lymph nodes