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.