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Cultural adaptation and validation of the "Fibromyalgia Impact Questionnaire" - Portuguese Version [Article in Portuguese]

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By Mda L Rosado • www.ProHealth.com • November 8, 2006


Journal: Acta Reumatol Port. 2006 Apr-Jun;31(2):157-65. Authors and Affiliation: Rosado Mda L, Pereira JP, da Fonseca JP, Branco JC. Unidade de Fisioterapia, Centro de Medicina de Reabilitacao de Alcoitao, Fisioterapia. [E-mail maria.rosado.4@netvisao.pt ] PMID: 17058362

The aim of this study was to translate the Fibromyalgia Impact Questionnaire (FIQ) into Portuguese (Portugal) and to evaluate its reliability and validity by use with Portuguese-speaking patients with Fibromyalgia. After translating the FIQ into Portuguese we administered it to 68 patients with Fibromyalgia together with an informed consent, a Portuguese version of the Health Assessment Questionnaire (HAQ) and a formulary with the socio-demographic characteristics and duration of the complaints.

The content validity was assessed with a panel of experts, with high consensus. In the concurrent validity, we obtained significant correlations between the FIQ first item and the HAQ [r = 0,531 (p = 0,001)]. Cronbach's alpha was 0,814, indicating an acceptable level of internal consistency.

In conclusion, the Portuguese version of the FIQ is a reliable and valid instrument for measuring health status and physical functioning in Portuguese patients with Fibromyalgia. This instrument is available for use in the clinical practice.




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