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RESEARCH PRODUCT

Using the Hemophilia Joint Health Score for assessment of children: Reliability of the Spanish version

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Introduction: Numerous measuring instruments for the evaluation of hemophilic arthropathy have been developed. One of the most used systems is the Hemophilia Joint Health Score (HJHS) given its sensitivity to clinical changes appearing in the joints because of recurrent hemarthrosis. Objective: Assessing the interrater reliability, using the Spanish version of the HJHS (version 2.1) in children with hemophilia. Design: Reliability study to assess the interrater reliability of the Spanish version of HJHS. Methods: A sample of 36 children aged 7–13 years diagnosed with hemophilia A or B was used. Two physiotherapists performed physical assessments with the Spanish version of the HJHS. Descriptive statistics (range, mean, standard deviation) and the analysis of interrater reliability were calculated. Results: The interrater reliability was heterogeneous since the Kappa coefficient range (ĸ), although significant (p < 0.001), ranged 0.31–1.00 in the variables of HJHS (swelling, duration of swelling, muscle atrophy, crepitus on motion, flexion loss, extension loss, joint pain, strength, and global gait). In assessing the bias of observers with the Bland and Altman method, the observer 1 scored 0.41 (CI [−0.67, 1.49]) units above observer 2, and the difference between the two was significant (t(36) = 4.48), p < 0.001). Conclusions: The interrater reliability of the Spanish population version of the HJHS is high. This scale should be used generically in evaluating musculoskeletal pediatric patients with hemophilia. Sin financiación 1.624 JCR (2019) Q2, 39/68 Rehabilitation 0.601 SJR (2019) Q2, 67/213 Physical Therapy, Sports Therapy and Rehabilitation No data IDR 2019 UEM