Fig. 1
From: Clinical phenotypes of comorbidities in end-stage knee osteoarthritis: a cluster analysis
Dendrogram of the results of cluster analysis of comorbidity variables(9 common factors). Systematic cluster analysis was used to classify the 9 common factors. Variables with similar response patterns were grouped together, and variables with different response patterns were separated. Each horizontal line represents an individual variable, and the length of the horizontal line represents the degree of similarity between the variables