Statistical Analysis.
The primary indications for S-ICD implantation across all study participants were analyzed. Study participants were then categorized into two groups based on whether they underwent S-ICD extraction. Univariate analyses were completed using chi-square or Fisher exact tests for categorical variables, and Student’s T Tests or Mann-Whitney U Tests for continuous variables as appropriate.  Preprocedural variables with a p value of <0.05 on univariate analysis and those with an a priori association with device extraction were included in a multivariate model. Subgroup analyses were performed within cohorts based on indication for extraction. All statistical analyses were conducted using SPSS Version 26 (IBM, Armonk, NY).