Statistical analysis
SPSS Statistics for Windows, Version 20.0 (IBM, NY, USA) was used for the statistical analysis. The Kolmogorov–Smirnov test evaluated the normality of the distribution. All continuous variables were presented as mean and standard deviation values, while categorical variables were defined as a percentage of the total group. A p-value of <0.05 was considered statistically significant, and all statistical tests were planned by comparing the two groups. Chi-squared and Fisherʼs exact tests compared the categorical variables. Independent samples t-test was used to compare categorical variables in two groups.