Measurement of walking endurance and walking velocity with questionnaire: Validation of the walking impairment questionnaire in men and women with peripheral arterial disease
Measurement of walking endurance and walking velocity with questionnaire: Validation of the walking impairment questionnaire in men and women with peripheral arterial disease
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DOI：
10.1016/s0741-5214(98)70034-5
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发表时间：
1998-12-01
影响因子：
4.3
通讯作者：
Greenland, P
中科院分区：
文献类型：
--
作者：
McDermott, MM;Liu, KA;Greenland, P
目的：步行障碍问卷（WIQ）旨在测量外周动脉疾病（PAD）和间歇性跛行患者的社区步行能力。我们比较了WIQ评分的客观措施，行走在一个异质性的一组患者，没有PAD.Methods：这项研究被设计为一个横断面研究，设置在一个学术医疗中心。受试者是PAD患者（n = 145），他们是从学术医学中心的无创血管实验室中确定的。无PAD的患者（n = 65）从全科医学实践中确定。PAD患者的平均合并症数为2.03，无PAD患者的平均合并症数为1.52。在PAD患者中，28%有典型的间歇性跛行症状，55%有跛行以外的劳力性腿部症状。主要结局指标是患者报告的步行距离和步行速度的WIQ估计值，量表为0至100。采用6分钟步行法客观测定步行耐力。步行速度测量为4米步行。结果：PAD患者的WIQ距离评分和6分钟步行评分之间的斯皮尔曼等级相关系数（rho）为0.557（P <0.001），无PAD患者为0.484（P <0.001）。在PAD患者中，WIQ速度评分与常规起搏4米步行评分之间的相关系数为0.528（P <0.001），在无PAD患者中为0.524（P <0.001）。这些相关性不受间歇性跛行的存在与否、PAD严重程度或存在2种或2种以上共病与少于2种共病的影响。WIQ分数的最高和最低的四分位数是最密切相关的客观措施的function.Conclusion：WIQ是一个有效的措施，社区步行能力在一个异质组的患者和没有PAD。WIQ在步行速度和耐力的最高和最低四分位数中最能区分患者。
Objectives: The Walking Impairment Questionnaire (WIQ) was designed to measure community walking ability in patients with peripheral arterial disease (PAD) and intermittent claudication. We compared the WIQ scores to objective measures of walking in a heterogeneous group of patients with and without PAD.Methods: The study was designed as a cross-sectional study, with the setting in an academic medical center. The subjects were patients with PAD (n = 145) who were identified from a noninvasive vascular laboratory at an academic medical center. The patients without PAD (n = 65) were identified from a general medicine practice. The average number of comorbidities was 2.03 for patients with PAD and 1.52 for patients without PAD. Among the patients with PAD, 28% had classical intermittent claudication symptoms and 55% had exertional leg symptoms other than claudication. The main outcome measures were the WIQ estimates of the patient-reported walking distance and walking speed on a scale of 0 to 100. Walking endurance was measured objectively with the 6-minute walk. Walking velocity was measured with a 4-m walk. PAD and PAD severity were defined with the ankle brachial index.Results: The Spearman rank correlation coefficients (rho) between the WIQ distance score and the 6-minute walk score were 0.557 among patients with PAD (P < .001) and 0.484 among patients without PAD (P < .001). The correlation coefficients between the WIQ speed score and the usual-paced 4-m walk score were 0.528 among patients with PAD (P < .001) and 0.524 among patients without PAD (P < .001). The correlations were not affected by the presence versus the absence of intermittent claudication, by PAD severity, or by the presence of 2 or more versus less than 2 comorbid illnesses. The WIQ scores in the highest and lowest quartiles were the most closely associated with the objective measures of function.Conclusion: The WIQ is a valid measure of community walking ability in a heterogeneous group of patients with and without PAD. The WIQ discriminates best among patients in the highest and the lowest quartiles of walking speed and endurance.