*2.3. Statistical Analysis*

Continuous variables were presented as median and interquartile range (IQR) value if a non-normal distribution was found. Normality of distribution was tested with Kolmogorov-Smirnov tests. Fisher's exact tests were used to evaluate association between categorical variables. Differences between continuous variables were evaluated with Mann-Whitney U test. Spearman rho coefficient was used in order to assess correlations in continuous variables. A threshold for *p*-value ≤ 0.05 was considered significant. Statistical Software for Social Sciences (SPSS), Version 16 for Windows (Chicago, IL, USA) was used.
