Table 4 Subgroup analysis of CV mortality. Notes: CV: cardiovascular; HFpEF: Heart failure with preserved ejection fraction; HFrEF: Heart failure with reduced ejection fraction; RCT: Randomized controlled trial; CS: Cohort Study; CA: catheter ablation; NCA: non-catheter ablation; RR: risk ratio; CI: confidence interval; P^a for RR; P^b for heterogeneity. In cases where the same study includes data from two separate groups due to different follow-up times, patients and article counts are recorded only once.

From: Meta-analysis of comprehensive prognostic evaluation in patients with atrial fibrillation complicated by heart failure after catheter ablation