A COMPARISON OF LIKERT AND VISUAL ANALOG SCALES FOR MEASURING CHANGE IN FUNCTION
A COMPARISON OF LIKERT AND VISUAL ANALOG SCALES FOR MEASURING CHANGE IN FUNCTION
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DOI：
10.1016/0021-9681(87)90080-4
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发表时间：
1987-01-01
期刊：
影响因子：
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通讯作者：
KELLER, JL
中科院分区：
文献类型：
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作者：
GUYATT, GH;TOWNSEND, M;KELLER, JL
许多对照试验依赖生活质量症状的主观测量作为主要结果。这些措施的不同应对方案的相对优点是一个重要的，但在很大程度上尚未探索的问题。因此，我们比较了7分李克特量表和视觉模拟量表（VAS）在慢性肺病患者生活质量调查问卷中的反应性。在完成已知有益的住院呼吸康复计划之前和之后，对28名患者进行了VAS和7分制的问卷调查。对于问卷的所有四个维度（呼吸困难，疲劳，情绪功能和掌握），VAS显示比7分制的改善更大，当这两个维度都以0-10的尺度标准化时。然而，在每种情况下，使用VAS改善的可变性更大。两种量表的改善差异无统计学意义。我们得出结论，两种方法提出的回应选项显示可比的响应。易于管理和解释的7分量表推荐在临床试验中使用。
Many controlled trials rely on subjective measures of symptoms of quality of life as primary outcomes. The relative merits of different response options for these measures is an important, but largely unexplored, issue. Therefore, we compared the responsiveness of seven-point Likert vs visual analogue scales (VAS) in a questionnaire measuring quality of life in chronic lung disease. The VAS and seven-point scale versions of the questionnaire were administered to 28 patients before and after completing an inpatient respiratory rehabilitation program of known benefit. For all four dimensions of the questionnaire (dyspnea, fatigue, emotional function, and mastery) the VAS showed a larger improvement than the seven-point scale when both were standardized on a scale of 0-10. However, in each case the variability of the improvement was greater using the VAS. The difference in improvement between the two scales was not statistically significant. We conclude that the two methods of presenting response options show comparable responsiveness. The ease of administration and interpretation of the seven-point scale recommend its use in clinical trials.