International Hip Outcome Tool (12-items) as health-related quality-of-life measure in osteoarthritis: validation of Greek version.
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ABSTRACT: BACKGROUND:The 12-item International Hip Outcome Tool (iHOT12) is a patient-reported outcome (PRO) designed to evaluate quality of life. We assessed the psychometric properties of the Greek version (iHOT12-Gr) in hip osteoarthritic patients. METHODS:Data from 124 patients aged >?50?years were used for factor analysis. Reliability evaluation included internal consistency, test-retest reliability, and interpretability. Content validity was examined by calculating the item-level content validity indices (I-CVI) and the scale-level content validity indices (S-CVI), using two methods: S-CVI Average (S-CVI/Ave), and the S-CVI Universal Agreement among experts (S-CVI/UA). Construct validity was tested against Greek versions of the Lower Extremity Functional Scale (LEFS-Greek), Modified Harris Hip Score (MHHS-Gr), and the 30?s chair-to-stand, Timed Up & Go (TUG), and 9-stairs-ascend/descend (9S-A/D) tests. Known-groups validity was examined using LEFS-Greek (cut-off?=?53 points) as estimate variable. Responsiveness was examined pre and post total hip arthroplasty (4 and 8?weeks). RESULTS:Factor analysis revealed a two-factor model. Factor-1 (items 1-9) reflects "Symptoms and functionality", while Factor-2 (items 10-12) reflects "Hip disorder-related concerns". Reliability: Internal consistency and test-retest reliability of iHOT12-Gr-total were excellent: Cronbach's alpha >?0.92 and ICC(95% CI)?>?0.976(0.96-0.99)(p??0.8. CONCLUSION:iHOT12-Gr showed excellent reliability properties. The content validity was excellent and significant weak-to-strong correlations were found regarding construct validity. The known-group validity was also significant, while the responsiveness was excellent. iHOT12-Gr could be a reliable and valid PRO for assessing quality of life in patients with hip osteoarthritis.
SUBMITTER: Stasi S
PROVIDER: S-EPMC7253559 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
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