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Construct validity of the physical function scale of the Swiss Spinal Stenosis Questionnaire for the measurement of walking capacity.

机译：构建用于测量步行能力的瑞士脊椎狭窄问卷的身体功能量表的有效性。

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STUDY DESIGN: Measurement (validity) study using data from a prospective longitudinal study of lumbar spinal stenosis. OBJECTIVE: Provide convergent and divergent validity evidence for the use of the Physical Function Scale of the Swiss Spinal Stenosis Questionnaire for the measurement of walking capacity in persons with lumbar spinal stenosis. We were also interested in the association between the Physical Function Scale and the Oswestry Disability Index (ODI). SUMMARY OF BACKGROUND DATA: The Physical Function Scale has been used to assess walking capacity in persons with lumbar spinal stenosis; however, there have been limited studies investigating its psychometric properties. No validity studies have compared the Physical Function Scale and the ODI head to head. METHODS: The Physical Function Scale was correlated with the ODI, Health Utilities Index, Centres for Epidemiologic Studies Depression Scale, Medical Outcomes Survey Social Support Scale, and an additional item from the Oxford Claudication Score. RESULTS: As hypothesized, the Physical Function Scale was correlated highly with those instruments and items intended to measure walking capacity and minimally with those instruments intended to measure different constructs. The correlation between the Physical Function Scale and the ODI was r = 0.719. CONCLUSION: Results support construct validity of the Physical Function Scale for the measurement of walking in an lumbar spinal stenosis population. However, it cannot be ascertained from the current study that the construct being measured is, indeed, walking capacity. Further research is warranted to investigate criterion validity evidence for the use of the Physical Function Scale in the measurement of walking capacity in lumbar spinal stenosis, by examining the relationships between self-report and observational measures of walking.
机译：研究设计：测量（有效性）研究使用的是前瞻性纵向研究腰椎管狭窄症的数据。目的：使用瑞士脊椎狭窄问卷的身体功能量表测量腰椎管狭窄症患者的步行能力，提供收敛和不同的有效性证据。我们还对身体功能量表和Oswestry残疾指数（ODI）之间的关联感兴趣。背景数据摘要：身体功能量表已被用于评估腰椎管狭窄症患者的步行能力。但是，研究其心理测量特性的研究很少。没有有效性研究比较过身体功能量表和ODI。方法：身体功能量表与ODI，健康公用事业指数，流行病学研究中心抑郁量表，医疗结果调查社会支持量表以及牛津C声评分中的其他项目相关。结果：假设，身体功能量表与那些用来测量步行能力的仪器和项目高度相关，而与那些用来测量不同结构的仪器之间的相关性最低。身体功能量表与ODI之间的相关性为r = 0.719。结论：结果支持构建的物理功能量表在腰椎管狭窄人群步行测量中的有效性。然而，从当前的研究中不能确定被测量的结构确实是步行能力。通过检查自我报告与步行观察指标之间的关系，有必要进行进一步的研究，以调查使用物理功能量表测量腰椎管狭窄步行能力的标准有效性证据。

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