Disability of the Arm, Shoulder and Hand questionnaire in Swedish patients with rheumatoid arthritis: A validity study
DOI:
https://doi.org/10.2340/16501977-0887Keywords:
disability evaluation, rheumatoid arthritis, upper extremity, reliability, validity, questionnaire.Abstract
Objective: The aim of this study was to assess the reliability and validity of the Disability of the Arm, Shoulder and Hand (DASH) questionnaire in a Swedish rheumatoid arthritis population. Methods: To investigate the concurrent and convergent validity, 67 patients with rheumatoid arthritis completed the DASH, the Health Assessment Questionnaire Disability Index (HAQ) and activity-induced pain. Active shoulder-arm motion, handgrip force and disease activity (Disease Activity Score in 28 joints; DAS28) were assessed. The test-retest reliability was investigated in 26 patients. Face validity was also investigated. Results: Spearman?s correlation coefficient revealed a significant association (p < 0. 001) between the DASH score and HAQ index (rs 0. 80), confirming satisfactory concurrent validity. A significant association (p ≤ 0. 02) was found between the DASH score and active shoulder-arm motion (rs ?0. 38 to ?0. 50), handgrip force (rs ?0. 46 to ?0. 59), activity-induced pain (rs 0. 66) and DAS28 (rs 0. 63), confirming satisfactory convergent validity for the DASH questionnaire. Satisfactory test-retest reliability (intraclass correlation coefficient 0. 99, 95% confidence interval 0. 98?0. 99) and face validity of the questionnaire were confirmed. Conclusion: The DASH questionnaire showed satisfactory test-retest reliability, concurrent-, convergent-, and face validity for patients with rheumatoid arthritis and can be recommended for use in rheumatoid arthritis populations.Downloads
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