Analysis Plan Descriptive statistics (summary measures, according to variable type and measurement scale) will be a descriptive analysis including means, medians, standard errors and variances for each of the stages of data collection (baseline and follow-up), as applicable. To analyze baseline differences between the study groups, comparisons between groups will be made by the difference of proportions test for categorical variables and t tests for continuous variables. The statistics tests will include design information, adjusting the standard errors and applying a continuity correction.