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  • Title: Screening for hip and knee osteoarthritis in the general population: predictive value of a questionnaire and prevalence estimates.
    Author: Roux CH, Saraux A, Mazieres B, Pouchot J, Morvan J, Fautrel B, Testa J, Fardellone P, Rat AC, Coste J, Guillemin F, Euller-Ziegler L, KHOALA Osteoarthritis Group.
    Journal: Ann Rheum Dis; 2008 Oct; 67(10):1406-11. PubMed ID: 18077540.
    Abstract:
    OBJECTIVE: To study the feasibility and validity of a two-step telephone screening procedure for symptomatic knee and hip osteoarthritis (OA) in the general population. METHOD: The screening questionnaire was based on signs and symptoms, previous diagnosis of OA and validated OA criteria. A random sample of telephone numbers was obtained and, at each number, one person aged 40-75 years was included. A physical examination and knee or hip radiographs were offered when the screen was positive. A sample of subjects with negative screens was also examined. The diagnosis of hip/knee OA was based on the American College of Rheumatology criteria for signs and symptoms and Kellgren-Lawrence radiographic stage 2 or greater. Prevalence rates were estimated with correction for the performance of the screening procedure. RESULTS: Of 1380 subjects, 479 had positive screens, among whom 109 were evaluated; symptomatic radiographic OA was found in 50 subjects, at the knee (n = 35) or hip (n = 20). Corrected prevalence estimates of symptomatic OA were 7.6% (6.4%-8.8%) for the knee and 5% (3.9%-6.1%) for the hip. The screening procedure had 87% (95% CI 79% to 95%) sensitivity and 92% (95% CI 91% to 93%) specificity for detecting knee OA and respectively 93% (95% CI 86% to 100%) and 93% (95% CI 92% to 94%) for hip OA. CONCLUSION: This study establishes the feasibility of telephone screening for symptomatic knee/hip OA, which could be used for a nationwide prevalence study. Pain and previous OA diagnosis were the best items for detecting symptomatic OA.
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