Chronic Fatigue Syndrome Research Today is a free monthly online journal that collates and summarizes the latest research about Chronic Fatigue Syndrome, including details on myalgic encephalomyelitis (me), diagnosis, gradual and sudden onset. | ||||||||
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The Spanish version of the FibroFatigue Scale: validation of a questionnaire for the observer's assessment of fibromyalgia and chronic fatigue syndrome.García-Campayo J, Pascual A, Alda M, Marzo J, Magallon R, Fortes S Department of Psychiatry, Miguel Servet University Hospital and University of Zaragoza Faculty of Medicine, Avenida Isabel La Católica, s/n 50.009 Zaragoza, Spain. jgarcamp@arrakis.es OBJECTIVE: To examine some of the psychometric properties of the Spanish version of the FibroFatigue Scale (FFS). METHODS: FFS was administered to 120 patients diagnosed with fibromyalgia and chronic fatigue syndrome. Internal consistency was evaluated by using Cronbach's alpha, test-retest reliability with weighted kappa and construct validity by correlations among FFS, the Fibromyalgia Impact Questionnaire (FIQ), the EuroQol 5D (EQ-5D) and the Hospital Anxiety and Depression Scale (HADS). The interrater reliability was tested using analysis of variance with patients and raters as independent factors. RESULTS: Internal consistency (alpha) was .88, test-retest reliability was .91, and interrater reliability was .93. Significant correlations were obtained between overall FFS and the FIQ (.55, P<.01), the EQ-5D (-.48, P<.01) and the HADS depression subscale (.25, P<.01), but not with the HADS anxiety subscale. CONCLUSION: These results support the reliability and validity of the data obtained with the Spanish version of the FSS. Published 6 March 2006 in Gen Hosp Psychiatry, 28(2): 154-60.
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