Statistical analysis
Statistical analysis was performed using the licensed program Statistica 13.0 (StatSoft, Inc. Tulsa, OK, USA). In order to characterize the group, descriptive statistics, means, standard deviations, medians, as well as multiplicities and percentages were used. The Shapiro–Wilk test was used to assess the normality of the distribution of the examined variables. The evaluation of quantitative data was performed using the Mann–Whitney U test. For the analysis of qualitative data, the X