Department of Quality Management and Social Medicine, University Freiburg-Medical Center, Engelbergerstr 21, Freiburg D-79106, Germany.
Health Qual Life Outcomes. 2013 Aug 5;11:135. doi: 10.1186/1477-7525-11-135.
While there are numerous instruments for capturing the symptoms of fibromyalgia syndrome (FMS) patients, there is a lack of questionnaires capable of measuring in detail FMS patients' participation and social functioning. It was our aim to develop and methodologically test a new patient questionnaire specific to FMS measuring these concepts (the "Fibromyalgia Participation Questionnaire" FPQ).
We first conducted a qualitative prestudy (focus groups, N = 38) to identify which impairments FMS patients experience in daily life because of their illness. To analyze the data we developed a coding system that contained 10 supercategories and a total of 105 subcategories. Items for the FPQ were developed from the subcategories. The psychometric analysis was done on a sample of N = 256 FMS patients undergoing inpatient rehabilitation in Germany.
The final version of the FPQ contained 27 items and three scales (participation in social life FPQ-S, 11 items; participation in daily life FPQ-D, 11 items, participation in work-life FPQ-W 5 items). The FPQ displays good distribution properties, all the scales are unidimensional, and the scales fit to the Rasch model. Cronbach's Alpha range from 0.85 to 0.94. We noted indications of construct validity in that the FPQ correlates as expected with the Fibromyalgia Impact Questionnaire (physical scale), Pain Disability Index and scales from the PROMIS® item banks for satisfaction with participation. The FPQ scales generally reveal greater responsiveness than other instruments. By linking FPQ items to the categories of the International Classification of Functioning, Disability and Health (ICF) we demonstrate content validity.
The FPQ captures participation and social functioning in FMS patients. As its psychometric properties are good, it can be recommended for use in evaluation studies and clinical trials.
虽然有许多工具可以捕捉纤维肌痛综合征 (FMS) 患者的症状，但缺乏能够详细测量 FMS 患者参与度和社会功能的问卷。我们的目的是开发一种专门针对 FMS 的新患者问卷，并对其进行方法学测试，以测量这些概念（“纤维肌痛参与问卷”FPQ）。
我们首先进行了一项定性预研究（焦点小组，N=38），以确定 FMS 患者因疾病而在日常生活中经历的哪些障碍。为了分析数据，我们开发了一个编码系统，其中包含 10 个超级类别和总共 105 个子类别。FPQ 的项目是从子类别中开发出来的。心理测量学分析是在德国接受住院康复治疗的 N=256 名 FMS 患者的样本上进行的。
FPQ 的最终版本包含 27 个项目和三个量表（社会生活参与度 FPQ-S，11 个项目；日常生活参与度 FPQ-D，11 个项目，工作生活参与度 FPQ-W，5 个项目）。FPQ 显示出良好的分布特性，所有量表都是一维的，且量表符合 Rasch 模型。Cronbach 的 Alpha 范围在 0.85 到 0.94 之间。我们注意到结构效度的迹象，FPQ 与纤维肌痛影响问卷（物理量表）、疼痛残疾指数和 PROMIS®项目库的量表相关，这些量表与参与满意度相关。FPQ 量表通常比其他量表显示出更大的反应性。通过将 FPQ 项目与国际功能、残疾和健康分类（ICF）的类别联系起来，我们展示了内容效度。
FPQ 捕捉了 FMS 患者的参与度和社会功能。由于其心理测量学特性良好，因此可以推荐用于评估研究和临床试验。
