Polish adaptation and validation of the hip disability and osteoarthritis outcome score (HOOS) in osteoarthritis patients undergoing total hip replacement

Marek K Gojło,Przemysław T Paradowski

doi:10.1186/s12955-020-01390-4

Abstract

BackgroundThe Hip disability and Osteoarthritis Outcome Score (HOOS) is a frequently used patient-reported outcome measure (PROM) for assessment of hip disorders and treatment effects following hip surgery. The objective of the study was to translate and adapt the Hip disability and Osteoarthritis Outcome Score (HOOS) into Polish and to investigate the psychometric properties of the HOOS in patients with osteoarthritis undergoing total hip replacement (THR).Materials and methodsThe Polish version of the HOOS was developed according to current guidelines. Patients completed the HOOS, Short Form 36 Health Survey (SF-36), the visual analogue scale (VAS) for pain and the global perceived effect (GPE) scale. Psychometric properties including interpretability (floor/ceiling effects), internal consistency (Cronbach’s alpha), test-retest reliability (intra-class correlation coefficient, ICC), convergent construct validity (a priori hypothesized Spearman’s correlations between the HOOS subscales, the generic SF-36 measure and the VAS for pain) and responsiveness (effect size, association between the HOOS and GPE scores) were analyzed.ResultsThe study included 157 patients (mean age 66.8 years, 54% women). Floor effects were found prior to THR for the HOOS subscales Sports and Recreation and Quality of Life. The Cronbach’s alpha was over 0.7 for all subscales indicating satisfactory internal consistency. The test–retest reliability was good for the HOOS subscale Pain (0.82) and excellent for all other subscales with ICCs ranging from 0.91 to 0.96. The minimal detectable change ranged from 12.0 to 26.2 on an individual level and from 1.4 to 3.0 on a group level. Seven out of eight a priori hypotheses were confirmed indicating good construct validity. Responsiveness was high since the expected pattern of effect sizes in all subscales was found.ConclusionsThe Polish version of the HOOS demonstrated good reliability, validity and responsiveness for use in patient groups having THR.

Highlights

Assessment of pain and function in patients with osteoarthritis (OA) has become routine in both clinical practice and research
Since the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) does not cover all important aspects of outcome, especially in subjects with higher physical demands, it has been further developed by completing available subscales and adding two new dimensions: Sport and Recreation Function and joint-related Quality of Life
Linguistic and cross-cultural translation process The translation process revealed some difficulties with the understanding of the description of activities that possibly cause pain (HOOS subscale Pain)

Summary

Introduction

Assessment of pain and function in patients with osteoarthritis (OA) has become routine in both clinical practice and research. The Knee Injury and Osteoarthritis Outcome Score (KOOS), an extension of the WOMAC, was initially constructed as a measure of PRO in studies of the treatment of anterior cruciate ligament and meniscus injury and later validated even for middle-aged patients with OA [2]. Another measure, the Hip disability and Osteoarthritis Outcome Score (HOOS) was adapted from the KOOS to be used in patients eligible for both, basic and surgical treatment of OA [3, 4]. The objective of the study was to translate and adapt the Hip disability and Osteoarthritis Outcome Score (HOOS) into Polish and to investigate the psychometric properties of the HOOS in patients with osteoarthritis undergoing total hip replacement (THR)

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