MSR103 Translation, Cultural Adaptation, and Psychometric Testing of the Hip Disability and Osteoarthritis Outcome Score Into Yoruba Language

Objectives This study objective was to translate the HOOS into Yoruba language and determine its psychometric properties. Methods The first stage of this study involved translation of the English version of the HOOS into Yoruba language followed by the backward translation, reconciliation and harmonization of the reconciled items successively. Consequently, there was a panel review of the harmonized Yoruba version of the HOOS, followed by a pilot testing. Patients with Hip Osteoarthritis (Hip OA) were involved in the validity testing, and test-retest reliability of the tool. Yoruba versions of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and the Back Belief Questionnaire (BBQ) were used to test the convergent and the discriminant validity of the Yoruba version of the HOOS. Data was analysed using descriptive statistics of mean, standard deviation, and percentages. Cronbach's Alpha, Intra-Class Correlation, and Pearson's Product Moment Correlation were used for reliability tests. Results Twenty participants with a mean age of 59.9 years participated in the study. For the concurrent validity, the correlation co- efficient score for the total HOOS was r = 0.813 and (p = 0.001), indicating a strong validity. A Cronbach’s alpha of 0.896 was found, indicating a high internal consistency. HOOS showed a significant correlation with WOMAC, which ranged from r=−0.801, p=0.001 for WOMAC pain to r=-0.432, and p=0.057 for WOMAC stiffness and r=-0.668 and p=0.001 for WOMAC function. The discriminant validity of the Yoruba version of the HOOS revealed no significant correlation with BBQ subscore (r=0.018, p=0.941), BBQ distractor (r=0.082,p=0.731) and BBQ total score (r=0.075,p=0.753). A high intraclass correlation co-efficient (ICC) which ranged from 0.969 to 0.994 (lowest to highest) was found on the retest of the subscales of HOOS. Conclusions The Yoruba version of the HOOS is valid and reliable for evaluating the outcomes of hip OA among Yoruba s