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Table 2 The distribution and clinical characteristics of 239 subjects

From: Artificial neural network aided non-invasive grading evaluation of hepatic fibrosis by duplex ultrasonography

   Fibrosis (F1-F3)   Cirrhosis (F4) 
Age (median/range) 45(30–63) 47(26–59)
Gender (F/M) 62/117 15/45
Post-hepatitis B 128 42
Post-hepatitis C 51 18
Training group 146 33
Validating group 33 27
   Training Group   Validating Group 
Age (median/range) 43(35–57) 45(26–63)
Gender (F/M) 57/121 20/51
Post-hepatitis B 120 50
Post-hepatitis C 62 7
 Stage of Liver Fibrosis    
F1 40 13
F2 22 8
F3 55 19
F4 62 20