Statistical Analysis
All statistical results were analyzed using the Statistical Package for the Social Sciences version 21.0 (SPSS Inc., Chicago, IL, USA) for Microsoft Windows. Mean and median values, standard deviation, and frequency values were calculated for the descriptive statistical data. A chi-squared test was used to compare ratios in categorical variables. Due to the low number of participants, the Shapiro–Wilk normality test was used to determine whether the study data were normally distributed. The Friedman test was used for the data that did not show normal distribution, and an evaluation of normally-distributed data was made by repeated measurement analysis. A Spearman’s rank correlation test was used for the data that was not normally distributed, and the relationship among the normally-distributed data was evaluated using a Pearson correlation analysis. A p value of <.05 was considered statistically significant.