International journal of rheumatic diseases
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Comparative Study
Cross-cultural adaptation of the Revised Korean version of the Fibromyalgia Impact Questionnaire: its association with physical function and quality of life.
Despite its shortcomings, the Fibromyalgia Impact Questionnaire (FIQ) is widely used to assess clinical symptoms and measure therapeutic changes in patients with fibromyalgia (FM). Recently, the revised version of the FIQ (FIQR) was released. In this study, we validated the Korean version of the FIQR and evaluated whether the revised version is superior to the original version in reflecting the physical function and quality of life of these patients. ⋯ Our study showed that the FIQR is a reliable, valid instrument for assessing patients with FM and performs better in the prediction of physical function and health status than the original version.