Statistical analysis
EVENTS
Statistical analyses were performed with Stata (Version 17, StataCorp, College Station, TX, USA). Descriptive statistics were used to summarise data. Distribution of data was determined by Shapiro–Wilk test. Continuous variables were summarised as means with standard deviations (SD) for parametric data or median with interquartile range (IQR) for non-parametric data. Categorical variables were expressed as frequencies and percentages. Where appropriate, we used a Kruskal–Wallis or Wilcoxon rank-sum test (for continuous variables) and chi-squared or Fisher’s exact test (for categorical variables), to compare patients assigned to ILR + 24 h-Holter monitoring compared to 24 h-Holter monitoring alone as well as patients with and without arrhythmic events. Correlations between 12-lead ECG and 24 h-Holter monitoring were assessed using Spearman’s rank test. A 