Background: The aim of this study was to investigate the content validity including item reduction, construct validity and internal consistency of the existing 16-item Knee Osteoarthritis Patient Education Questionnaire. Former research had indicated that a reduction of items was necessary. Participants were patients with severe knee osteoarthritis who, prior to undergoing a knee replacement operation, participated routinely in a preoperative educational intervention. Methods: A mixed method design was used. The first step was directed at the reduction in the number of items on the 16-item Knee Osteoarthritis Patient Education Questionnaire. Based on a priori hypotheses, this was followed by a cross-sectional validation study, performed to compare the resulting 7-item Knee Replacement Patient Education Questionnaire to a patient-testing Interview Protocol that was tailored to the same patient educational material. Additionally, the revised questionnaire was correlated with both the Short Test of Functional Health Literacy and the Mini-Mental State Examination score. Results: A relatively high internal consistency was found for the 7-item Knee Replacement Patient Education Questionnaire, with a Cronbach's alpha of 0.84 (SE: 0.036). Explanatory factor analysis showed no evidence against a one-factor model, with the first and second eigenvalues being 3.8 and 0.31, respectively. Bayesian Estimation of the correlation between the 7-item Knee Replacement Patient Education Questionnaire and the Interview Protocol was 0.78 (mode) (95% HPD 0.58-0.89). Conclusions: The 7-item Knee Replacement Patient Education Questionnaire shows good psychometric properties and could provide valuable support to health professionals. It can provide valid feedback on how patients waiting for a knee replacement operation experience an applied patient education intervention. Further investigation is needed to assess the applicability of the 7-item Knee Replacement Patient Education Questionnaire to larger samples in different hospitals and countries.

ZusammenfassungDas primäre Ziel der Rehabilitation nach einer Rekonstruktion des vorderen Kreuzbands ist die Rückkehr zur Aktivität bzw. zum Sport. Daher scheint es umso wichtiger, eine Testbatterie nutzen zu können, die verlässliche Werte für die Wiederaufnahme von Training bzw. Sport generiert. Dafür sind standardisierte Tests und Assessments auf der Aktivitäts- und Partizipationsebene am aussagekräftigsten, bei denen die Durchführung, die Auswertung und die Interpretation vorgegeben sind.

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Eine anspruchsvolle Fortbildung beginnen oder im Sommer den Urlaub genie?en? Steffi kann sich nicht entscheiden. In ihr sind die ehrgeizige Therapeutin und die freizeitliebende Sportlerin gleich stark ausgepr?gt. Erst als sie die Frage strategisch angeht, findet sie die f?r sie stimmige Entscheidung.

Background: The aim of this study was to investigate the content validity, construct validity and internal consistency of an existing 16-item Knee Osteoarthritis Patient Education Questionnaire. Participants were patients with severe knee osteoarthritis who, prior to undergoing a knee replacement operation, participated routinely in a preoperative educational intervention. A mixed method design was used. Methods: The first step was directed at a reduction in the number of items on the 16-item Knee Osteoarthritis Patient Education Questionnaire. Based on a priori hypotheses, this was followed by a cross-sectional validation study, performed to compare the resulting 7-item Knee Replacement Patient Education Questionnaire to a patient-testing Interview Protocol that was tailored to the same patient educational material. Additionally, the revised questionnaire was correlated with both the Short Test of Functional Health Literacy and the Mini-Mental State Examination score. Results: A relatively high internal consistency was found for the 7-item Knee Replacement Patient Education Questionnaire, with a Cronbach’s alpha of 0.84 (SE: 0.036). Explanatory factor analysis showed no evidence against a one-factor model, with the first and second eigenvalues being 3.8 and 0.31, respectively. Bayesian Estimation of the correlation between the 7-item Knee Replacement Patient Education Questionnaire and the Interview Protocol was 0.78 (mode) (95% HPD 0.58 – 0.89). Conclusions: To more accurately reflect the content of the included items following validation, the title of the questionnaire was changed to 7-item Knee Replacement Patient Education Questionnaire. It shows good psychometric properties and could provide valuable support to health professionals. It can provide valid feedback on how patients waiting for a knee replacement operation experience an applied patient education intervention. Further investigation is needed to assess the applicability of the 7-item Knee Replacement Patient Education Questionnaire to larger samples in different hospitals and countries.