Huber Erika O, Boger Axel, Meichtry André, Bastiaenen Caroline H
Institute of Physiotherapy, School of Health Professions, Zurich University of Applied Sciences, Technikumstrasse 71, Postfach, 8401, Winterthur, Switzerland.
Institute of Physiotherapy, Cantonal Hospital Winterthur, Brauerstrasse 15, 8400, Winterthur, Switzerland.
BMC Musculoskelet Disord. 2020 Jul 16;21(1):468. doi: 10.1186/s12891-020-03476-y.
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.
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.
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).
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.
本研究旨在调查现有16项膝关节骨关节炎患者教育问卷的内容效度，包括项目缩减、结构效度和内部一致性。先前的研究表明有必要减少项目数量。研究对象为重度膝关节骨关节炎患者，他们在接受膝关节置换手术前，常规参与术前教育干预。
采用混合方法设计。第一步旨在减少16项膝关节骨关节炎患者教育问卷的项目数量。基于先验假设，随后进行横断面验证研究，将最终得到的7项膝关节置换患者教育问卷与针对相同患者教育材料量身定制的患者测试访谈协议进行比较。此外，将修订后的问卷与功能健康素养简短测试和简易精神状态检查得分进行相关性分析。
7项膝关节置换患者教育问卷具有较高的内部一致性，克朗巴哈系数为0.84（标准误：0.036）。解释性因素分析表明没有证据反对单因素模型，第一和第二特征值分别为3.8和0.31。7项膝关节置换患者教育问卷与访谈协议之间的贝叶斯估计相关性为0.78（众数）（95%最高后验密度区间为0.58 - 0.89）。
7项膝关节置换患者教育问卷显示出良好的心理测量学特性，可为健康专业人员提供有价值的支持。它可以就等待膝关节置换手术的患者如何体验应用的患者教育干预提供有效的反馈。需要进一步研究以评估7项膝关节置换患者教育问卷在不同医院和国家的更大样本中的适用性。
