Validation of the Portuguese Version of the Modified Harris Hip Score Questionnaire - HHSmBr

Objective  To validate the Portuguese version of the evaluation instrument modified Harris Hip Score. Methods  The modified Harris Hip Score went through a validation process for the Portuguese language. We tested the measurement properties of the Brazilian Portuguese version of the modified Harris Hip Score (HHSmBr) on 100 patients (63% females and 37% males) with different hip conditions. Determination of test-retest reliability occurred in 100 participants after an interval of 7 to 14 days. The Cronbach alpha and intraclass correlation coefficient (ICC) evaluated internal consistency and reliability, respectively. The distribution of questions in different categories assessed the floor/ceiling effect. Patients answered the Western Ontario and McMaster Universities Osteoarthritis Index ( WOMAC ) and the Hip Disability and Osteoarthritis Outcome Score (HOOS) questionnaires to validate estimates. Results  The internal consistency of the HHSmBr was 0.724 in the test and 0.706 in the retest. Test-retest reliability was excellent (ICC = 0.80). The floor/ceiling effect only occurred in the pain domain, with scores 23.2% and 12.1% in test and retest, respectively. Comparing the HHSmBr with the WOMAC and HOOS scores, the lowest and highest correlation values were -0.466 and -0.906, respectively, indicating a moderate-to-strong correlation. Conclusion  Our study showed that the HHSmBr is a valid and reliable hip-specific assessment questionnaire in Portuguese.