Fibromyalgia & musculoskeletal pain
Psychometric evaluation of the Norwegian version of the Revised Fibromyalgia Impact Questionnaire
Authors' conclusion
Owing to the lack of unidimensionality in the FIQ-R, it is recommended that both clinical and research applications rely on subscale scores rather than a total score.
Study context
- Population
- Adults with FM (classified by FSDC) attending a patient education session for chronic musculoskeletal pain, Norway96.3% female
- Participants
- 241 adults
- Outcome
- Face, content and criterion validity and psychometric properties (Rasch analysis) of the Norwegian FIQ-R
Methodological detailstranslation and cultural adaptation, Rasch analysis, anonymous questionnaire, Fibromyalgia Impact Questionnaire (FIQ-R) translated into Norwegian with patient research partners
- Translation and cultural adaptation
- Rasch analysis
- Anonymous questionnaire
- FIQ-R translated into Norwegian with patient research partners
Performance
As reported in the abstract
- Acceptable face and content validity
- Moderate correlation between FIQ-R and SF-36
- Strong correlation between FIQ-R and Modified Health Assessment Questionnaire (MHAQ)
- Multidimensional scale with two subscales: FIQ-R function and FIQ-R symptoms
- Reversed threshold ordering in both subscales; collapsed into five (function) and four (symptoms) response categories
- Resulting subscales had good reliability and targeting
Original publication
Psychometric evaluation of the Norwegian version of the Revised Fibromyalgia Impact Questionnaire. Scand J Rheumatol. Published 10 November 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →