Statistically Analysis
IBM SPSS Statistics for Windows v.21.0 (IBM Corp., Armonk, NY) was used.
Descriptive statistics were expressed as mean, median, standard
deviation, minimum-maximum for numerical variables and as number and
percentage for categorical variables. The assumption of normality was
examined with the Kolmogorov-Smirnov test, which failed to meet the
assumption. Kruskal-Wallis test was used to determine whether there was
a difference between groups. In the case of differences between the
groups, paired comparison tests were used to determine the group that
drove the difference. The differences between categorical variables were
examined by chi-square test. The significance level was accepted as
p<0.05.