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

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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.

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Acknowledgments

The authors would like to thank all patients who participated in this study by filling out the FIQ.

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Authors and Affiliations

  1. Transcare, Transdisciplinary Pain Management Center, Groningen, The Netherlands

    C. Paul van Wilgen

  2. Department of Clinical Neuropsychology, VU University, Amsterdam, The Netherlands

    Pieter Jelle Vuijk

  3. CaRES Centre of Applied Research and Innovation (Care Rehabilitation Education and Sports) and Department of Health Sciences, Community and Occupational Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands

    Miriam W. van Ittersum

  4. Chronic Pain and Chronic Fatigue Research Group (CHROPIVER), Department of Human Physiology, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium

    Jo Nijs

  5. Chronic Pain and Chronic Fatigue Research Group (CHROPIVER), Division of Musculoskeletal Physiotherapy, Department of Health Care Sciences, Artesis University College Antwerp, Antwerp, Belgium

    Jo Nijs

  6. Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium

    Jo Nijs

Authors
  1. C. Paul van Wilgen
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  2. Pieter Jelle Vuijk
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  3. Miriam W. van Ittersum
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  4. Jo Nijs
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Corresponding author

Correspondence to C. Paul van Wilgen.

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van Wilgen, C.P., Vuijk, P.J., van Ittersum, M.W. et al. Not throwing out the baby with the bathwater: lessons from the Fibromyalgia Impact Questionnaire. Clin Rheumatol 32, 333–339 (2013). https://doi.org/10.1007/s10067-012-2120-3

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  • DOI: https://doi.org/10.1007/s10067-012-2120-3

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