Figure 1

Exploratory multivariate analysis. Factor analysis of mixed data (FAMD) with grouping variables identified four dissimilar groups: the two main groups (Severe and Mild), and the two age-related subgroups (10–40 years old; 41–85 years old).

Exploratory multivariate analysis. Factor analysis of mixed data (FAMD) with grouping variables identified four dissimilar groups: the two main groups (Severe and Mild), and the two age-related subgroups (10–40 years old; 41–85 years old).