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. 2008 May 19;68(6):954–960. doi: 10.1136/ard.2007.084459

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Bland–Altman plot of 28-joint Disease Activity Score (DAS28) C-reactive protein (CRP) and DAS28 erythrocyte sedimentation rate (ESR) values for patients in the ATTAIN (Abatacept Trial in Treatment of Anti-TNF INadequate responders) and AIM (Abatacept in Inadequate responders to Methotrexate) trials (both treatment groups) at 6 months. Difference between DAS28 (ESR) and DAS28 (CRP) scores vs mean value of DAS28 (ESR) and DAS28 (CRP) score combined for patients in the ATTAIN and AIM trials (both treatment groups) at 6 months. The central line represents the mean difference between the two measures, and the upper and lower bounds represent 2SD from the mean.