Fig. 3From: Real-world data in rheumatoid arthritis: patient similarity networks as a tool for clinical evaluation of disease activityDistributions of correlating pairs of features. Correlating pairs are visualized in the final PSN in two columns: on the left, erythrocyte sedimentation rate and C-reactive protein; on the right, swollen and tender joint counts. A three-colour scale (blue-yellow-red) was found to provide good readabilityBack to article page