Figure 4From: Radiofrequency ablation versus percutaneous ethanol injection for hepatocellular carcinoma: a meta-analysis of randomized controlled trials Comparison of three-year local recurrence rates between radiofrequency ablation and percutaneous ethanol injection for hepatocellular carcinoma (random effects model). CI, confidence interval; PEI, percutaneous ethanol injection; RFA, radiofrequency ablation; RR, risk ratio.Back to article page