Statistical Analysis
Statistical analyzes were performed using SPSS Statistics Package version 21.0 (SPSS Inc, Chicago, IL, USA) for Windows. The distribution characteristics of the data were determined by using Kolmogorov–Smirnov test. The independent Sample t-test was used for the comparison of normally distributed quantitative variables and the Mann-Whitney U test was used for the comparison of non-normally distributed quantitative variables. The χ2 test was used for univariate analysis of the categorical variables. The Variables were given as means ± SD; categorical variables were defined as percentages. Median and interquartile range were given when the variable did not follow normal distribution. Correlation analyses were performed using Pearson’s coefficient of correlation and Spearman coefficient of correlation. A probability value of p <0.05 was considered significant, and 2-tailed p values were used for all statistics.