2.4. Statistical Analysis
’s Q
SECONDARY
Statistical testing was conducted using statistical software SPSS v.21 (IBM Corp., Armonk, NY, USA). First, descriptive statistics composed median and interquartile ranges to report quantitative variables and frequency and percentage to describe the qualitative variables. Second, Shapiro–Wilks test was performed to determine normal distribution. Third, Cochran’s Q (Q) was used to analyze differences in the prevalence of FD evaluated from the RMQ. Finally, a non-parametric Wilcoxon signed-rank test was used to determine differences between measurement moments (pre-intervention and post-treatment) and within, between, and within–between groups on the primary and secondary outcomes. Significance level was set at 