ArticleActa orthopaedica2025
Cross-cultural adaptation and validation of a Norwegian version of the Goodman Satisfaction Score (GSS-NO) for patients with total hip and knee arthroplasty.
Article in Acta orthopaedica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
background and purposeMeasuring patient satisfaction after total hip (THA) and total knee arthroplasty (TKA) is important. We aimed to cross-culturally adapt and examine the psychometric properties of the self-reported Goodman Satisfaction Score (GSS) in a sample of Norwegian patients following primary THA and TKA.
methodsThe GSS was translated and adapted into Norwegian (GSS-NO) following standard guidelines. 800 patients from the Norwegian Arthroplasty Register who had undergone surgery 6-11 months prior were invited to complete GSS-NO and questions on sociodemographic factors, pain, and function in a cross-sectional study. We examined validity in relation to internal structure, response processes, and precision using Rasch analysis, relationships between the GSS-NO and pain and function using Pearson's correlation coefficients, and test-retest reliability using linear weighted kappa statistics.
resultsThe GSS-NO was adapted with few challenges. 404 patients (49% THA, 51% TKA) returned complete answers. The GSS-NO met all criteria regarding the rating scale functioning. Local independence among items and unidimensionality was supported and there was acceptable goodness-of-fit. The internal consistency was 0.94. We found no systematic differential item functioning by age, sex, work status, education, cohabitation status, or hip or knee surgery. The correlation coefficients between GSS-NO and pain and function outcomes were 0.79 (95% confidence interval [CI] 0.76-0.82) and 0.79 (CI 0.76-0.82), respectively. Test-retest reliability with weighted kappa ranged from 0.43-0.55 for THA and 0.54-0.81 for TKA.
conclusionThe cross-cultural adaptation of GSS-NO proved to be a valid and reliable measure for use in Norwegian-speaking patients following primary THA and TKA.
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