Reliability of a specific questionnaire to evaluate the quality of life in people with knee and hip osteoarthritis in Colombia
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Abstracto
Aims: To determine the reliability of the Osteoarthritis Knee and HipQuality of Life questionnaire in the Colombian elderly populationwith osteoarthritis of the knee and hip. Methods: The methodologicalapproach of this study is quantitative, with a cross-sectional design.The participants completed the questionnaire with a lapse betweenmeasurements between 5 and 8 days. The psychometric properties ofreproducibility, internal consistency and level of agreement of thequestionnaire were determined through intraclass correlation coefficient, Cronbach’s Alpha and Bland and Altman’s graphical analysis,respectively. Results: Sixty-two older adults with osteoarthritis of theknee and hip aged between 57 and 82 answered the questionnaire.Near perfect reproducibility (CCI = 0.89) was found for the physicalactivity domain; and substantial (CCI = 0.62–0.77) for the domains ofpain, mental health and activities. A very satisfactory internal consistency was also obtained in the domains of mental health andphysical activity (Alfa = 0.90–0.94), while that of pain was adequate(Alpha = 0.89). As for what was found with the level of agreement,the average of the differences in the domains of physical activity, painand mental health was - 7.0, - 8.0 and - 6.9 points, respectively.Conclusion: The Osteoarthritis Knee and Hip Quality of Life questionnaire showed good psychometric properties in the domains ofphysical activity, pain and mental health, mainly. This instrument canbe used in the clinical setting but requires adjustments to be used inresearch
