Figure 1From: Development of a health care utilisation data-based index for rheumatoid arthritis severity: a preliminary studyThis plot illustrates the median and interquartile range for the tertiles of the claims-based index of rheumatoid arthritis severity (CIRAS). These values are plotted against the records-based index of rheumatoid arthritis severity (RARBIS). The CIRAS exhibits a moderate linear correlation with the RARBIS.Back to article page