Figure 1
From: Pooled indices to measure rheumatoid arthritis activity: a good reflection of the physician's mind?
Performance of the SDAI and the DAS28. Receiver operating characteristic curve analysis of the performance of the SDAI and the DAS28, using expert opinion on patient profiles as the gold standard. The experts rated whether moderate or high disease activity was present or not. DAS28, Disease Activity Score based on 28-joint evaluation; SDAI, Simplified Disease Activity Index.