Ritti-Dias Raphael Mendes, Gobbo Luis Alberto, Cucato Gabriel Grizzo, Wolosker Nelson, Jacob Filho Wilson, Santarém José Maria, Carvalho Celso Ricardo Fernandes, Forjaz Cláudia Lúcia de Moraes, Marucci Maria de Fátima Nunes
Faculdade de Saúde Pública, USP, São Paulo, SP, Brazil.
Arq Bras Cardiol. 2009 Feb;92(2):136-49. doi: 10.1590/s0066-782x2009000200011.
The Walking Impairment Questionnaire (WIQ) has been used to evaluate walking impairment in subjects with intermittent claudication (IC). However, this questionnaire has yet to be translated to Brazilian Portuguese, which limits its use in Brazilian subjects.
To translate and analyze the validity and reliability of WIQ in Brazilian subjects with IC.
Forty-two patients with IC, determined by the ankle-brachial index < 0.90, participated in the study. After translation and re-translation, carried out by two independent translators, the construct validity of the WIQ was analyzed by correlating the WIQ scores with the Medical Outcome Study Questionnaire Short Form 36 (SF-36) scores and the physical fitness performance (treadmill and strength tests). The reliability was analyzed with a 7-day interval between two questionnaire applications.
Significant correlations between the WIQ domains and the SF-36 (functional capacity, physical aspects, bodily pain and emotional aspects) and physical fitness performance (treadmill and strength tests) were observed. Moreover, the intraclass coefficient correlation ranged from 0.72 to 0.81, and there were no differences in WIQ scores between the two questionnaire applications.
The Brazilian Portuguese version of the WIQ is valid and reliable to be used in Brazilian subjects with IC.
步行障碍问卷（WIQ）已被用于评估间歇性跛行（IC）患者的步行障碍。然而，该问卷尚未被翻译成巴西葡萄牙语，这限制了其在巴西受试者中的应用。
翻译并分析WIQ在巴西IC患者中的有效性和可靠性。
42例经踝肱指数<0.90确诊为IC的患者参与了本研究。在两名独立翻译人员进行翻译和回译后，通过将WIQ评分与医学结局研究简明健康调查问卷36项版本（SF-36）评分以及体能表现（跑步机和力量测试）进行关联分析WIQ的结构效度。通过在两次问卷应用之间间隔7天来分析可靠性。
观察到WIQ各领域与SF-36（功能能力、身体方面、身体疼痛和情感方面）以及体能表现（跑步机和力量测试）之间存在显著相关性。此外，组内相关系数在0.72至0.81之间，两次问卷应用之间的WIQ评分没有差异。
WIQ的巴西葡萄牙语版本在巴西IC患者中使用是有效且可靠的。
