Figure 3.

Loadings for three factors identified using factor analysis for the rheumatoid arthritis cohort. The colors of the bars correspond to the hierarchical clustering analysis to facilitate comparisons between methods. Loadings less than an absolute value of 0.3 were not displayed. Note some comorbidities are included in multiple factors and others are not included in any factor. Abbreviations: BPH=benign prostatic hyperplasia, circ=circulatory, COPD=chronic obstructive pulmonary disease, GERD=gastroesophageal reflux disease, PTSD=post-traumatic stress disorder.