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The purpose of the study is to demonstrate the characteristics of lymphoproliferative disorders (LPDs) in patients with rheumatoid arthritis (RA) and risk factors for LPD among RA patients concurrently treated with methotrexate (MTX). Among patients who participated in the Institute of Rheumatology, Rheumatoid Arthritis (IORRA) cohort study in October 2010, past existence of LPD from patient’s report...
To clarify the impact of comorbidities on treatment strategies and outcomes in patients with rheumatoid arthritis (RA) using a large observational RA cohort, the presence of comorbidities was assessed using the Charlson Comorbidity Index (CCI). Changes in medication, disease activity by Disease Activity Score-28 joint count (DAS28) over 6 months, disability assessed by the Japanese version...
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