Continuous variables are reported as the mean and standard deviation. Categorical variables are reported as the frequency. Independent sample t-tests, the chi-squared test, and Fisher’s exact test were used to detect statistically significant differences between groups. The threshold for statistical significance was p < 0.05. Linear regression was performed to identify factors that were associated with the PCQ score. Results are presented as β-values with 95% confidence intervals (95% CI) . Analyses were performed with SPSS 22.0 software (SPSS Inc., Chicago, IL, USA).