2.5. Statistical Analyses
WBS, pain
The statistical analysis was carried out with the help of SPSS version 26.0 (SPSS Inc., Chicago, IL, USA). The descriptive data are displayed as a frequency distribution along with the mean and standard deviation for the items of the NMQ. The Shapiro–Wilk test was carried out to validate the normality of the score distribution. The impact of WBS and an education program on pain intensity and physical exertion at the end of week 6 was analyzed using a repeated measures analysis of variance (ANOVA). Additionally, we used a 2 × 3 repeated measures ANOVA with time (at baseline, week 3, and week 6 of the posttest), group (WBS and control), and the interaction effect (time × group), in addition to (time × gender), (time × occupation), and (time × gender × occupation), as our independent variables. The post hoc analysis was not performed if the main effect of the intervention was not significant. Alternatively, a post hoc analysis with the Bonferroni correction was performed on time if the main effect of time was statistically significant. The level of significance was chosen at To determine an adequate sample size, the software application G-Power 3.1 was utilized. A minimum sample size of 26 participants was required for each of the groups, with the alpha level, power, and effect size each being set at 0.05, 0.80, and 0.4, respectively. Considering an attrition rate of 15%, there were a total of 30 participants in each of the groups [