3.3 Prediction for the risk of AF recurrence based on DC post-ablation
There are 5 studies reporting the ratio predicting for AF recurrence based on post-ablation DC. The pooled OR calculated with the random-effect model was 2.17 (Figure 4; 95%CI, 1.44 to 3.25; P< .01), suggesting that the high DC post-ablation was a risk factor for AF recurrence in patients treated with CA. One of these studies reported the HR estimated with the Cox regression analysis to predict AF recurrence, which might account for the significant heterogeneity (I 2 = 76.1%, P< .01). Similar results were retrieved in the sensitivity analysis (Supplement 1D). The funnel plot regarding ORs based on DC was presented in Supplement 2D.