Validation of the Spanish Version of the Self-Administered Patient Satisfaction Scale (SAPS) for Total Hip and Knee Arthroplasty
Abstract
Introduction: Patient satisfaction is an important parameter when evaluating clinical outcomes after total hip (THA) or knee (TKA) arthroplasty. The objective of this work was to validate the Spanish version of the Self-Administered Patient Satisfaction scale (SAPS) for THA or TKA, as well as to study its psychometric properties. Materials and Methods: A cross-sectional validation study was carried out to evaluate the content, internal consistency, and criterion validity of the SAPS scale. A total of 105 subjects who were treated with THA or TKA were included. Criterion validity was assessed with the WOMAC scale (Western Ontario and McMasterUniversities Osteoarthritis Index) and SF-36 (Short Form 36 Health Survey). Results: Fifty patients undergoing THA and 55 undergoing TKA were analyzed at a median follow-up of 14 months (Interquartile range, 11-19) after surgery, with a mean age of 71.3 ± 11.6 years; 73.3% (77) were women. Cronbach’s alpha was 0.797, indicating an acceptable internal consistency. A moderate correlation was found between the SAPS scale and the WOMAC scale (Spearman’s coefficient: 0.488, p <0.05), as well as with the physical component of the SF-36 (Spearman’s coefficient: 0.525, p <0.05). Conclusion: The Spanish version of the SAPS scale is a valid and reliable tool to measure patient satisfaction after THA or TKA, with psychometric properties similar to those of the original scale. Level of Evidence: IIDownloads
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