{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T01:37:06Z","timestamp":1793151426586,"version":"4.5.0"},"reference-count":25,"publisher":"Journal of Orthopaedic & Sports Physical Therapy (JOSPT)","issue":"12","content-domain":{"domain":["www.jospt.org"],"crossmark-restriction":true},"short-container-title":["Journal of Orthopaedic &amp; Sports Physical Therapy"],"published-print":{"date-parts":[[2015,12]]},"abstract":"<jats:sec><jats:title>Study Design<\/jats:title><jats:p> Clinical measurement. <\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p> To translate and culturally adapt the international Hip Outcome Tool (iHOT-12) into Dutch and to determine its validity and reliability. <\/jats:p><\/jats:sec><jats:sec><jats:title>Background<\/jats:title><jats:p> The iHOT-12 for measuring health-related quality of life and physical functioning in younger, active patients with hip pathology is available in English and Swedish. The tool is scored on a 0-to-100-point scale, with higher scores reflecting better function. A Dutch version of the questionnaire, with demonstrated high validity and reliability, is needed for both clinical and research purposes. <\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p> The iHOT-12 was translated and culturally adapted from English into Dutch (iHOT-12NL). Subsequently, the iHOT-12NL, RAND 36-Item Health Survey, Hip disability and Osteoarthritis Outcome Score (HOOS), and Tegner activity scale were completed by 117 patients with hip pathologies. Structural validity was analyzed using exploratory principal-component factor analysis. To determine construct validity, 12 hypotheses were predefined regarding relationships between the iHOT-12NL and subscales of the RAND 36-Item Health Survey, Hip disability and Osteoarthritis Outcome Score, and Tegner activity scale. To determine test-retest reliability, 61 patients completed the iHOT-12NL on a second occasion within a 2-week period. Intraclass correlation coefficient (ICC), Cronbach alpha, standard error of measurement (SEM), and minimal detectable change (MDC) were calculated to assess reliability. Bland-Altman analysis was conducted to assess bias between test and retest. <\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p> Factor analysis revealed that the iHOT-12NL has 1 component. Construct validity was good, as 83% of the hypotheses were confirmed. Internal consistency was good, with a Cronbach alpha of .96. The ICC was 0.93 (95% confidence interval: 0.88, 0.96), demonstrating good test-retest reliability. The SEM was 7.3 points. Individual- and group-level MDC values were 20.2 and 2.6 points, respectively. Bland-Altman analysis showed an absence of bias. <\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p> The iHOT-12NL is a reliable and valid instrument for measuring physical functioning and health-related quality of life in younger, physically active patients with hip pathology. J Orthop Sports Phys Ther 2015;45(12):1026\u20131034. 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