School of Health and Related Research, University of Sheffield, Sheffield, UK.
Jessop Wing, Sheffield, UK.
Br J Surg. 2020 Jul;107(8):1004-1012. doi: 10.1002/bjs.11531. Epub 2020 Apr 6.
This paper describes the development and validation of an electronic personal assessment questionnaire for vascular conditions (ePAQ-VAS) that captures the symptomatology, quality of life and clinically relevant data of patients presenting to vascular services.
A two-stage survey was conducted in patients attending a tertiary vascular department. Patients completed the ePAQ-VAS remotely online, or on site using an electronic tablet. In the first stage of the survey, the responses were used to perform confirmatory factor analysis to assess the construct validity and remove redundant items. The internal reliability of disease-specific scales was investigated. In the second stage of the survey, the acceptability, known-group validity, test-retest reliability, and responsiveness of ePAQ-VAS was assessed.
In total, 721 patients completed ePAQ-VAS. Their mean(s.d.) age was 63·5(15·7) years and 468 (64·9 per cent) were men. Some 553 patients (76·7 per cent) completed the questionnaire in clinic and the remainder completed the questionnaire online. The results of the confirmatory factor analysis confirmed the conceptual model for ePAQ-VAS structure and eliminated six items. Internal reliability was acceptable for all the scales (Cronbach's α greater than 0·7). The test-retest reliability measured by the intraclass correlation coefficient ranged from 0·65 to 0·99. The results showed that the instrument was responsive over time with the standardized response mean ranging from 0·69 to 1·60.
ePAQ-VAS is a holistic data-collection process that is relevant to vascular service users and has potential to contribute to patient-focused care and the collection of aggregate data for service evaluation. A demonstration version of the final version of ePAQ can be viewed at http://demo-questionnaire.epaq.co.uk/home/project?id=VASC_1.7&page=1.
本文描述了一种用于血管疾病的电子个人评估问卷（ePAQ-VAS）的开发和验证，该问卷可捕获就诊于血管科的患者的症状、生活质量和临床相关数据。
在一家三级血管科的患者中进行了两阶段调查。患者通过远程在线或使用电子平板电脑在现场完成 ePAQ-VAS。在调查的第一阶段，根据响应情况进行验证性因子分析，以评估结构有效性并删除冗余项目。研究了疾病特异性量表的内部可靠性。在调查的第二阶段，评估了 ePAQ-VAS 的可接受性、已知组有效性、重测信度和反应性。
共有 721 名患者完成了 ePAQ-VAS。他们的平均（标准差）年龄为 63.5（15.7）岁，468 名（64.9%）为男性。553 名（76.7%）患者在诊所完成了问卷，其余患者在线完成了问卷。验证性因子分析的结果证实了 ePAQ-VAS 结构的概念模型，并删除了 6 个项目。所有量表的内部可靠性均可接受（Cronbach's α大于 0.7）。通过组内相关系数测量的重测信度范围为 0.65 至 0.99。结果表明，该仪器随着时间的推移具有响应能力，标准化反应均值范围为 0.69 至 1.60。
ePAQ-VAS 是一种全面的数据收集过程，与血管科患者相关，具有为以患者为中心的护理做出贡献和为服务评估收集汇总数据的潜力。最终版本的 ePAQ 演示版本可在 http://demo-questionnaire.epaq.co.uk/home/project?id=VASC_1.7&page=1 查看。
