• Mehmet Özkeskin, Fatih Özden, Özge Ocaker Aktan, Tuba Demirci Yıldırım, and İsmail Sarı.
• Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Ege University, İzmir, Turkey.
• Turk J Med Sci. 2022 Jul 1; 52 (5): 172917361729-1736.

BackgroundThe revised Leeds Disability Questionnaire (RLDQ) is a unique assessment tool for patients with ankylosing spondylitis (AS); its comprehensive structure includes posture and neck flexibility parameters. The aim of the study was to determine the psychometric properties of the Turkish RLDQ in patients with AS.MethodsA total of 100 AS patients were enrolled in the study. In the first evaluation, patients filled out the Dougados Functional Index (DFI) and Bath Ankylosing Spondylitis Functional Index (BASFI), Stanford Health Assessment Questionnaire (HAQ) in addition to RLDQ. Then, patients were refilled the revised RLDQ in the second assessment.ResultsThe mean age of the patients (40 women, 60 men) was 48.3 ± 12.6 years. The test-retest reliability and internal consistency of the RLDQ total score were excellent. ICC score and Cronbach's alpha score were calculated as 0.853 and 0.905, respectively. The SEM and MDC values calculated for the RLDQ total score were 2.74 and 7.60, respectively. RLDQ had degrees of correlation with DFI, HAQ, and BASFI of 0.814, 0.742, and 0.852, respectively. Construct validity was excellent (r > 0.50, p < 0.01).DiscussionThe Turkish version of the RLDQ was found to be valid and reliable in patients with AS. It should be emphasized that the RLDQ is a distinctive and valuable tool that focuses separately on neck, posture, or other mobility parameters in the clinical assessment of AS.

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