Figure 2.
Comparison of AF recurrence or progression in patients using a Forest plot. A pooled estimate of risk ratio (diamonds) and 95% confidence intervals (width of diamonds) summarizes the effect size using the random-effects model. 1 indicates no radiofrequency ablation, 2 indicates pulmonary venous isolation, and 3 indicates pulmonary venous isolation and complex fractionated atrial electrogram. CI = confidence interval, RR = risk ratio.