Data analysis
Analysis was conducted using descriptive statistics and appropriate reliability and validity statistical tests using SPSSSPSS 15.0 (SPSS Inc., Chicago, IL, USA). Content validity was assessed using an expert panel. Internal consistency was determined using Cronbach’s a coefficient. Test–retest mea- surement was assessed using Pearson’s correlations and a Wilcoxon’s signed-rank test with a 24-hour interval. Con