Statistical Analysis. All statistical analyses were performed using SPSS 17.0 for Windows (SPSS, Chicago, IL, USA). e Kolmogorov-Smirnov test was used to test the normality of the data distribution, and the data were expressed as the mean and standard deviation. e chi-square test was used to compare the categorical variables between the groups. e one-way ANOVA test was used for comparisons of the parametric continuous data. e Kruskal-Wallis test was used for the nonparametric continuous data. Pearson’s correlation analysis was used to examine the associations between the variables, and a linear regression analysis was performed to identify independent predictors of the pain domains of the SF-36. A two-sided