3.2 Study characteristics
The characteristics of the included trials and ablation settings are shown in Table 1. A significant difference in power delivery setting was found between the HPSD and LPLD groups. There is no consensus about the power and duration settings for HPSD, in our study, energy levels above 40 W are considered as high power and duration of application for 2~10s as short duration4, 13, 14, 17-20. All patients received PVI, additional linear ablations were performed in select patients at the operator’s discretion in some trials4, 18, 19 . All studies had good methodological quality. The results of the grouping ensured the feasibility of this meta-analysis.