EA4360 Apemac, University of Lorraine, 9 avenue de la Forêt de Haye, 54500, Vandoeuvre-lès-Nancy, France.
CIC-1433 Epidémiologie Clinique, Inserm, Hôpitaux de Brabois, Allée du Morvan, 54500, Vandœuvre-lès-Nancy, France.
Qual Life Res. 2018 Oct;27(10):2731-2743. doi: 10.1007/s11136-018-1914-4. Epub 2018 Jun 12.
To assess the validity of the e-OAKHQOL questionnaire and analyze whether the answers were affected by the form of administration (electronic vs. paper).
Two samples of patients with knee osteoarthritis were constituted. The first was recruited by general practitioners. Patients could choose to respond to the electronic or paper version. The second included subjects who responded to the paper version and were matched with respondents to the electronic version in the first sample. The OAKHQOL questionnaire measures health-related quality of life in five dimensions (43 items): physical activity, mental health, pain, social functioning, and social support. Validity was assessed by the classical test theory (CTT) and a Rasch measurement model (partial credit model).
The electronic form was preferred by 471 (89.7%) patients: 345 were matched to respondents of the paper version. The percentage of missing responses was lower with the electronic than paper form (1.6 vs. 2.0%, p = .01). Rasch analysis revealed four items with underfitting. Internal consistency was excellent for physical activity (PSI = 0.96) and mental health (PSI = 0.93) but was slightly < 0.85 for the other dimensions. The top-down purification highlighted the significance of DIF by gender in the pain dimension and by form of questionnaire in the mental health dimension.
CTT and Rasch analysis demonstrated acceptable measurement properties for the five dimensions of the e-OAKHQOL, so it may be a valuable alternative to the paper form for measuring HRQoL.
评估电子 OAKHQOL 问卷的有效性，并分析答案是否受到管理形式（电子与纸质）的影响。
构建了两个膝关节骨关节炎患者样本。第一个由全科医生招募。患者可以选择电子或纸质问卷作答。第二个样本包含了纸质问卷的应答者，且与第一个样本中的电子问卷应答者相匹配。OAKHQOL 问卷通过经典测量理论（CTT）和拉什测量模型（部分信用模型）测量五个维度的健康相关生活质量（43 项）：身体活动、心理健康、疼痛、社会功能和社会支持。
471 名（89.7%）患者更喜欢电子问卷形式：其中 345 名与纸质问卷应答者相匹配。电子问卷形式的缺失应答率低于纸质问卷形式（1.6%对 2.0%，p = .01）。拉什分析显示有四个项目拟合不足。身体活动（PSI = 0.96）和心理健康（PSI = 0.93）维度的内部一致性极好，但其他维度略低于 0.85。自上而下的纯化强调了疼痛维度中性别差异和心理健康维度中问卷形式差异的 DIF 意义。
CTT 和拉什分析表明，电子 OAKHQOL 的五个维度具有可接受的测量性能，因此它可能是纸质问卷测量健康相关生活质量的一种有价值的替代方式。
