2.6. Data Analysis
All the statistical analyses were performed with IBM SPSS Statistics version 23. The level of significance was established with a Univariate analysis. The baseline sociodemographic and clinical features of the group were described using measures of central tendency for quantitative variables, and total frequency table and percentage for categorical variables.Bivariate analysis. The parametric statistic Pearson’s Correlation was used to analyse the correlation between two quantitative variables: The degree of relation was established with the following criterion: The Wilcoxon test was used to assess the effectiveness of the intervention.