Division of Rheumatology, Universidade Federal do Paraná, Rua Padre Camargo, 549-23/24, 80060-240 Curitiba, Paraná, Brazil.
Clin Rheumatol. 2013 Aug;32(8):1199-206. doi: 10.1007/s10067-013-2259-6. Epub 2013 Apr 21.
The Fibromyalgia Impact Questionnaire (FIQ) was specifically developed to assess disease severity and functional ability in fibromyalgia patients. In 2009, a revised version of the FIQ was published, the FIQR; this version achieved a better balance among different domains (function, overall impact, symptoms). Here, we present the validity and reliability of the Brazilian version of the Revised Fibromyalgia Impact Questionnaire (FIQR). Female fibromyalgia patients (n = 106) completed an online survey consisting of the Short Form 36 (SF-36) questionnaire, the original FIQ, and the Brazilian Portuguese FIQR, which was translated by a standard method. Validity was established with correlational analyses between the FIQR, FIQ, and SF-36 items. Three domains were established for the FIQR (function, overall impact, symptoms), and their contribution for the SF-36 subscales was also scrutinized. The Brazilian FIQR validation process showed that the questions performed in a very similar way to the original English FIQR. The new questions in the FIQR symptoms domain (memory, balance, tenderness, and environmental sensitivity) revealed a significant impact in fibromyalgia (FM) patients. The Brazilian Portuguese FIQR demonstrated excellent reliability, with a Cronbach's alpha of 0.96. There was a gain on weight of the function domain and a decrease of the symptom domain, leading to a better balance among domains. The FIQR predicted a great number of SF-36 subscales, showing good convergent validity. The Brazilian Portuguese version of the FIQR was validated and found to be a reliable, easy-to-use, and score FM-specific questionnaire that should prove useful in routine clinical practice and FM-related research.
纤维肌痛影响问卷（FIQ）专门用于评估纤维肌痛患者的疾病严重程度和功能能力。2009 年，发布了 FIQ 的修订版，即 FIQR；这个版本在不同领域（功能、整体影响、症状）之间取得了更好的平衡。在这里，我们介绍了修订后的纤维肌痛影响问卷（FIQR）的巴西版本的有效性和可靠性。106 名女性纤维肌痛患者完成了一项在线调查，包括 36 项简短健康调查问卷（SF-36）、原始 FIQ 和经标准方法翻译的巴西葡萄牙语 FIQR。FIQR 与 FIQ 和 SF-36 项目之间的相关性分析确立了有效性。FIQR 建立了三个领域（功能、整体影响、症状），并仔细研究了它们对 SF-36 子量表的贡献。巴西 FIQR 的验证过程表明，问题的表现与原始英语 FIQR 非常相似。FIQR 症状领域的新问题（记忆力、平衡、压痛和环境敏感性）显示出纤维肌痛（FM）患者的显著影响。巴西葡萄牙语 FIQR 显示出极好的可靠性，克朗巴赫的 alpha 系数为 0.96。功能域的权重增加，症状域的权重降低，从而使域之间达到更好的平衡。FIQR 预测了大量的 SF-36 子量表，显示出良好的收敛有效性。FIQR 的巴西葡萄牙语版本经过验证，是一种可靠、易于使用的、针对 FM 的问卷，在常规临床实践和 FM 相关研究中应该很有用。
