Statistical analysis:
Statistical analyzes were performed using SPSS software version 15. The conformity of the variables to the normal distribution was examined using visual (histogram and probability graphs) and analytical methods (Kolmogorov-Smirnow/Shapiro Wilk tests). Descriptive analyzes were given using median and minimum-maximum values for non-normally distributed variables. In addition, mean, standard deviation values and ordinal variables were given using frequency tables. Wilcoxon test was used for in-group rank pairwise comparisons. Friedman test was used to compare data with more than two repetitive measurements. If required, pairwise comparisons were made using the Wilcoxon test and evaluated using Bonferroni correction. Ordinal variables in 2 related samples were compared with McNemar test. Correlation coefficients and statistical significance for the relationships between parameters were calculated by Spearman’s test. The p value was taken as 0.05 for statistical significance.