Fig. 14From: Harm reduction program and hepatitis C prevalence in people who inject drugs (PWID) in Iran: an updated systematic review and cumulative meta-analysisTrend of HCV Ab prevalence among PWID in Iran by recruitment setting. a Trend of HCV Ab prevalence among PWID in the prison setting, the Cochran–Armitage test, P value = 0.17. b Trend of HCV Ab prevalence among PWID in the hospital/healthcare center setting, the Cochran–Armitage test, P value < 0.001. c Trend of HCV Ab prevalence among PWID in the DIC setting, the Cochran–Armitage test, P value = 0.01Back to article page