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.