Ordinal qualitative variables: Wilcoxon non-parametric test -Evaluate differences in the change stage, in the short and medium term, in each group. - Evaluate differences in the distribution of nutritional status, in the short and medium term, in each group. -Evaluate differences in the distribution of the food habit "dairy consumption", in the short and medium term, in each group. -Evaluate differences in the distribution of the answers of the questions about cognitive-social measures, in the short and medium term, in each group.