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

To validate the Portuguese version of the evaluation instrument modified Harris Hip Score.  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 ( ) and the Hip Disability and Osteoarthritis Outcome Score (HOOS) questionnaires to validate estimates.  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.  Our study showed that the HHSmBr is a valid and reliable hip-specific assessment questionnaire in Portuguese.