Comparison of basic characteristics
Among the 101 patients, 34 exhibited AHREs during the initial one year after CIED implantation and were subsequently allocated to the AHRE group, while the remaining 67 patients were allocated to the non-AHRE group. Table 1 summarizes the basic clinical characteristics of the included patients before CIED implantation. Statistical differences were analyzed between the AHRE and non-AHRE groups. Although the subpopulation of SSS patients was larger in the AHRE group than in the non-AHRE group (p =0.05), the other parameters did not present any statistical differences.