Fig. 4From: Molecular epidemiology of hepatitis C virus genotypes in different geographical regions of Chinese mainland and a phylogenetic analysisThe distribution of HCV subtypes among different age groups. The horizontal axis represents different age groups (19–29, 30–39, 40–49, 50–59, ≥ 60 year), and the vertical axis represents the percentage of different subtypes (a). b compares the age of HCV-infected patients in different sexes. The horizontal axis represents different sexes, and the vertical axis represents age. c shows the proportions of subtypes in different sexes. The horizontal axis represents diverse HCV subtypes, and the vertical axis represents the percentage of diverse HCV subtypes in different sexes. P < 0.01 is marked by ** and P < 0.001 is marked by ***Back to article page