Fig. 6From: Viral hepatitis associated hepatocellular carcinoma on the African continent, the past, present, and future: a systematic reviewA box and whiskers plot of the prevalence of HDV in HBV-associated hepatocellular carcinoma in Africa between 1980 and 2019. HBV (blue box) prevalence decreased among HCC cases while HDV (orange box) prevalence in the HCC cases increased gradually over the study period (1980–2019). The box represents the mean estimate (prevalence), and whiskers correspond to the error margin (HBV = 3.5%, HDV = 0.48%) around the estimated meanBack to article page