Statistical analysis
IBM SPSS Statistics 23.0 was used for the statistical analysis. Data are presented as a median and interquartile interval (IQR). Nonparametric criteria (Mann – Whitney U test, Kruskal-Wallis and Dunn’s test) were used according to nonparametric data distribution confirmed by the Kolmogorov-Smirnov normality test. In order to evaluate the role of DM duration, the DM group was further divided by the median value of 42 days into short (28-41 days) and prolonged (42-76 days) DM groups. Pearson correlation, logistic and linear regression analyzes were used for search of associations between VT/VF inducibility and physiological parameters. The differences were considered statistically significant at p ≤ 0.05.