Katz Gregory, Rouquette Alexandra, Lignereux François, Mourgues Thierry, Weber Michel, Lundström Mats
Chair of Innovation & Value in Health, University of Paris School of Medicine, Paris, France.
Value-Based Health Care Consortium, Paris, France.
Eye Vis (Lond). 2021 Apr 1;8(1):11. doi: 10.1186/s40662-021-00233-7.
The Catquest-9SF questionnaire is a patient reported outcome measure that quantifies the visual benefits from cataract surgery. The purpose of this study was to translate and adapt the Catquest-9SF questionnaire for France, to assess its psychometric properties via Rasch analysis, and to assess its validity when completed using an electronic notepad.
The Catquest-9SF questionnaire was translated following the guidelines of the International Society for Pharmacoeconomics and Outcomes Research. Catquest-9SF and clinical data were collected from patients before and after routine cataract surgery. All questionnaire data were collected via an electronic notepad. Rasch analysis was performed to assess psychometric properties, and sensitivity to change was analysed for patients with complete paired pre- and post-operative questionnaires.
A complete filled-in preoperative questionnaire was obtained for 848 patients. Rasch analysis showed good precision (person separation: 2.32, person reliability: 0.84), ordered category probability curves, no item misfit, and unidimensionality. The respondents were slightly more able than the level of item difficulty (targeting: -1.12 logits). Sensitivity was analysed on 211 paired questionnaires, and the postoperative questionnaires showed a clear ceiling effect. The effect size was 2.6. The use of an electronic notepad for completing the questionnaire worked out very well after some adjustments.
The French version of Catquest-9SF has good psychometric properties and is suitable for use in French-speaking patients. The use of the Catquest-9SF questionnaire in an electronic format showed good validity.
Catquest-9SF问卷是一种患者报告结局指标，用于量化白内障手术带来的视觉益处。本研究的目的是将Catquest-9SF问卷翻译成法语并进行适应性调整，通过拉施分析评估其心理测量特性，并评估使用电子记事本填写时的有效性。
按照国际药物经济学和结局研究协会的指南对Catquest-9SF问卷进行翻译。在常规白内障手术前后收集患者的Catquest-9SF问卷和临床数据。所有问卷数据均通过电子记事本收集。进行拉施分析以评估心理测量特性，并对术前和术后问卷完整配对的患者分析其对变化的敏感性。
共获得848例患者完整填写的术前问卷。拉施分析显示精度良好（人员分离度：2.32，人员信度：0.84），有序类别概率曲线良好，无项目不匹配，且具有单维度性。受访者的能力略高于项目难度水平（目标定位：-1.12对数单位）。对211对配对问卷进行了敏感性分析，术后问卷显示出明显的天花板效应。效应大小为2.6。经过一些调整后，使用电子记事本填写问卷效果良好。
法语版的Catquest-9SF具有良好的心理测量特性，适用于说法语的患者。以电子格式使用Catquest-9SF问卷显示出良好的有效性。
