International Journal of Preventive Medicine (Int J Prev Med)2008-7802922018031318931893ENOrthopedic Research Center, Mashhad University of Medical Sciences, MashhadOrthopedic Research Center, Mashhad University of Medical Sciences, MashhadOrthopedic Research Center, Mashhad University of Medical Sciences, MashhadDepartment of English Language and Literature, Ferdowsi University of Mashhad, MashhadOrthopedic Research Center, Mashhad University of Medical Sciences, Mashhad20180313<p><span class="fontstyle0"><strong>Background</strong>: </span><span class="fontstyle2">This study aimed Persian translation and validation of the hip disability and osteoarthritis outcome score (HOOS) questionnaire. </span></p><p><span class="fontstyle0"><strong>Methods</strong>: </span><span class="fontstyle2">The study was carried out in two phases. First, we translated the HOOS according to acceptable guidelines. We assessed HOOS content convergent validity on 203 hip osteoarthritis patients using SF‑36. Internal consistency was tested using Cronbach’s alpha coeffcient if each item removed and intraclass correlation coeffcient (ICC) for the assessment of test‑retest reproducibility. </span></p><p><span class="fontstyle0"><strong>Results</strong>: </span><span class="fontstyle2">Patients had mean (standard deviation) age of 39 (17). Test‑retest ICC in whole was 0.95 (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.014) showing excellent reliability. ICC was 0.92 for the “pain” subscale (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.02), 0.81 for the “symptom” subscale (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.002), 0.81 for the “function of daily living (FDL)” (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.022), 0.88 for the “function of sports and recreational activities” (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.006), but it was 0.62 (</span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.1) for the “quality of life (QOL).” Cronbach’s alpha was 0.92, 0.73, 0.97, 0.86, 0.80, and<br />0.80 for the pain, symptom, FDL, function of sports, QOL, and stiffness, respectively, showing good to excellent internal consistancy. Having SF‑36 for the assessment of convergent validity, there was a strong<br />correlation between total HOOS score and the physical component summary domain of SF‑36 (</span><span class="fontstyle3">r </span><span class="fontstyle2">= 0.64, </span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.0001), whereas the t correlation with the mental component summary domain was weak (</span><span class="fontstyle3">r </span><span class="fontstyle2">= 0.16, </span><span class="fontstyle3">P </span><span class="fontstyle2">= 0.04). </span></p><p><strong></strong><span class="fontstyle0"><strong>Conclusions</strong>: </span><span class="fontstyle2">The Persian version of the HOOS questionnaire is a valid (regarding physical not mental aspects) and reliable assessment tool in patients with hip osteoarthritis.</span></p><p><strong></strong><span class="fontstyle0" style="color: #00652e;"><strong>Keywords</strong>: </span><span class="fontstyle3">Hip osteoarthritis, outcome score, questionnaires, translation</span> </p>http://ijpm.mui.ac.ir/index.php/ijpm/article/view/1893http://ijpm.mui.ac.ir/index.php/ijpm/article/download/1893/717717718