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  • Title: [Evaluation of the 1987 revised ARA criteria for rheumatoid arthritis in Japan].
    Author: Kobayashi S, Sugawara M, Takahashi H, Koga K, Taniguchi O, Tsuda H, Hirano T, Kumagai Y, Matsumoto T, Hashimoto H.
    Journal: Ryumachi; 1989 Apr; 29(2):97-104. PubMed ID: 2772758.
    Abstract:
    Three hundred and sixty two Japanese patients with rheumatoid arthritis (RA) and 455 patients with other rheumatic diseases (SLE 233, PSS 63, MCTD 51, PM-DM 41 Behcet's disease 33 and OA 33) were examined for the evaluation of the 1987 revised ARA criteria for RA. In our cases sensitivity was slightly decreased and specificity was markedly increased 5 out of 7 criterions compared with the results reported by ARA. In the investigation how many number of criterions at least which the patients with RA should satisfy, 4 out of 7 criterions in the 1987 criteria turned out the highest figure in the accuracy (the mean of sensitivity and specificity values). So the patients who satisfied at least 4 criterions were classified to have RA. Sensitivity of the 1987 criteria decreased to 90% although that of the 1958 ARA criteria was 93%. Specificity were markedly increased from 88% to 95% (the 1958 and 1987 criteria, respectively). These results might be based on the revision of the duration of "morning stiffness" (lasting at least 1 hour) and on the deletion of "joint pain or tenderness" which was relatively less specific for RA.
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