highly significantp < 0.0001
The Shapiro–Wilk test indicated a nonparametric distribution of the dataset ( p < 0.0001), whereas the Kruskal–Wallis test was applied to test for potential differences regarding the overall ISR of AUBB and the individual sub-entities and indicated a highly significant difference between the overall ISR of AUBB and all established sub-entities ( p < 0.0001; Table 4 ).