ArticleBrazilian journal of physical therapy
Comparison between different health state utility instruments in patients with fibromyalgia.
Article in Brazilian journal of physical therapy. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 6 citations in OpenAlex.
- The mediating role of anxiety and depression in the relationship between alexithymia, somatosensory amplification, and functional impairment in fibromyalgia.Frontiers in psychiatry · 2025Article
- The health impact of long COVID: a cross-sectional examination of health-related quality of life, disability, and health status among individuals with self-reported post-acute sequelae of SARS CoV-2 infection at various points of recovery.Journal of patient-reported outcomes · 2023Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCost-utility analysis uses utility indexes to assess treatment effects. Some discrepancies between different utility indexes instruments are suggested and need to be identified in health conditions not yet investigated.
objectiveTo compare different utility indexes instruments in Brazilian patients with fibromyalgia and identify variables associated with these instruments.
methodsImpact of fibromyalgia (Fibromyalgia Impact Questionnaire [FIQ]) and utility indexes (Short-Form 6 Dimensions [SF-6D], EuroQol 5 Dimensions [EQ-5D], and EuroQol - Visual Analogue Scale [EQ-VAS]) were assessed in 97 patients with fibromyalgia at baseline, 8-week (after an exercise-based intervention), and 6- and 12-month follow-up. Construct validity and responsiveness of the utility indexes instruments were compared. Multiple regression models were used to verify the variables associated with the utility indexes instruments.
resultsConstruct validity analysis showed that FIQ presented moderate correlation with the SF-6D, the EQ-5D, and the EQ-VAS (r=-0.43, -0.41, -0.30, respectively, all p < .01). There was a moderate correlation between the SF-6D and the EQ-5D (r = 0.51, p < .001), moderate correlation between the SF-6D and the EQ-VAS (r = 0.41, p < .001), and no correlation between the EQ-VAS and the EQ-5D. The EQ-5D was responsive at the 8-week and 6-month follow-up, the SF-6D was responsive only at 6-month follow-up and the EQ-VAS was not responsive. The FIQ was associated with the EQ-5D and the SF-6D indexes, and symptom duration and depression with the EQ-VAS index.
conclusionThe EQ-5D better assessed the clinical change in patients with fibromyalgia. Furthermore, impact of fibromyalgia, symptom duration, and depression seem to be associated with the utility indexes.
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