Not throwing out the baby with the bathwater: lessons from the Fibromyalgia Impact Questionnaire

C.P. van Wilgen; P.J. Vuijk; M.W. van Ittersum; J. Nijs

doi:10.1007/s10067-012-2120-3

Not throwing out the baby with the bathwater: lessons from the Fibromyalgia Impact Questionnaire

C.P. van Wilgen, P.J. Vuijk, M.W. van Ittersum, J. Nijs

Clinical Neuropsychology

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The Fibromyalgia Impact Questionnaire (FIQ) is the most frequently used questionnaire in patients with fibromyalgia in the last 20 years. Recently, a revised version of the FIQ has been published. In this study, we examined the factor structure of the original version using explorative and confirmative factor analyses in a representative group of about 500 Dutch and Belgian patients with fibromyalgia, in which the work-related item was excluded. The FIQ consisting of a three-factor structure with a functional domain (ten items), physical symptom domain (six items), and mental symptom domain (two items), which is the most accurate. From the data presented, it is concluded that the FIQ is a solid, worldwide-used questionnaire with a history of 20 years consisting of three domains. When constructing a revised FIQ, the results of this study can be incorporated. © 2012 Clinical Rheumatology.

Original language	English
Pages (from-to)	333-339
Journal	Clinical Rheumatology
Volume	32
Issue number	3
Early online date	30 Nov 2012
DOIs	https://doi.org/10.1007/s10067-012-2120-3
Publication status	Published - 2013

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title = "Not throwing out the baby with the bathwater: lessons from the Fibromyalgia Impact Questionnaire",

abstract = "The Fibromyalgia Impact Questionnaire (FIQ) is the most frequently used questionnaire in patients with fibromyalgia in the last 20 years. Recently, a revised version of the FIQ has been published. In this study, we examined the factor structure of the original version using explorative and confirmative factor analyses in a representative group of about 500 Dutch and Belgian patients with fibromyalgia, in which the work-related item was excluded. The FIQ consisting of a three-factor structure with a functional domain (ten items), physical symptom domain (six items), and mental symptom domain (two items), which is the most accurate. From the data presented, it is concluded that the FIQ is a solid, worldwide-used questionnaire with a history of 20 years consisting of three domains. When constructing a revised FIQ, the results of this study can be incorporated. {\textcopyright} 2012 Clinical Rheumatology.",

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