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  • Title: Predictors of extra-articular manifestations in rheumatoid arthritis.
    Author: Turesson C, Jacobsson L, Bergström U, Truedsson L, Sturfelt G.
    Journal: Scand J Rheumatol; 2000; 29(6):358-64. PubMed ID: 11132204.
    Abstract:
    OBJECTIVE: To identify clinical and genetic risk factors for extra-articular manifestations of rheumatoid arthritis (ExRA). METHODS: ExRA patients were identified retrospectively using predefined criteria in two hospital-based cohorts of RA patients, and compared to non-extraarticular RA controls from one of the cohorts, matched for disease duration. RESULTS: Forty-nine living and thirteen deceased cases of ExRA were identified. Extra-articular disease was predicted by the demonstration of antinuclear antibodies (Odds ratio (OR) 3.6; 95% CI: 1.4-9.1) and the presence of rheumatoid nodules within two years from RA diagnosis (OR 3.4; 95%, CI: 1.1-10.9) or at any time before ExRA onset (OR 2.8; 95% CI: 1.1-7.2). Male sex and rheumatoid factor did not affect the risk of ExRA. Although present in the majority of cases as well as controls, the disease associated HLA-DRB1 subtypes were not significant predictors of ExRA. CONCLUSION: Extra-articular manifestations of rheumatoid arthritis in a hospital based population were predicted by antinuclear antibodies and rheumatoid nodules.
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