Figure 5.

Clusters identified using network analysis among subjects with rheumatoid arthritis. Panel A includes comorbidities that have pairwise Cramer’s V > .22 while panel B only includes Cramer’s V > .32. Thicker lines correspond to stronger relationships. Cramer’s V is a measure of the relative strength of an association between two variables and ranges from 0 to 1. Abbreviations: alcohol=Alcohol abuse, aller_rhin=Allergic rhinitis, arrhythm=Cardiac arrhythmia, back=Chronic back pain, bipolar=Bipolar disorder, cad=Coronary artery disease, copd=Chronic obstructive pulmonary disease, dm=Diabetes mellitus, drug=Drug abuse, hemat_ca=Hematologic cancer, hf=Heart failure, htn=Hypertension, oa=Osteoarthritis, ptsd=Post-traumatic stress disorder, pvd=Peripheral vascular disease, rls=Restless leg syndrome, sinusitis=Chronic sinusitis, skin_ulcer= Chronic skin ulcers, sleep=Sleep disorders, solid_ca=Solid cancer, stroke=Cerebrovascular disease, valvular=Valvular heart disease.