https://www.selleckchem.com/pr....oducts/bos172722.htm
Data of 3358 observations from 1505 unique RA patients were extracted. DAS-OST was defined as -0.44 + OST*0.03 + male*-0.11 + LN(ESR)*0.77 + PGA-VAS*0.03. The ICC between DAS-OST and DAS28 were 0.88 (95%CI 0.87-0.9 and 0.82 (95%CI 0.75-0.86) and measurement errors 0.58 and 0.87 in internal and external validation, respectively. Sensitivity for remission, LDA and HDA were 79%, 91%, 43%, and specificity 92%, 80%, 96% in external validation. Using the HandScan, RA disease activity can be accurately estimated if combined with ESR, PGA-V
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