Regional differences of repeatability on visual analogue scale with experimental mechanical pain stimuli
Regional differences of repeatability on visual analogue scale with experimental mechanical pain stimuli
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DOI：
10.1016/j.neulet.2014.11.032
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发表时间：
2015-01-12
影响因子：
2.5
通讯作者：
Ushida, Takahiro
中科院分区：
文献类型：
--
作者：
Hayashi, Kazuhiro;Ikemoto, Tatsunori;Ushida, Takahiro
疼痛-VAS作为一种量表是相当主观的，但根据感知的疼痛强度，有假设重复性差异的趋势。本研究的目的是调查疼痛VAS评分的区域差异的可重复性。三个实验性的机械刺激施加到27个健康志愿者在四个会议超过四周内的个人。同样的刺激也以同样的方式用电子天平同时测量。通过100 g、300 g和600 g单丝确定机械刺激的幅度。用电子天平测量的标准差（SD）随刺激幅度的增加而有规律地增加，而系数变化（CV）在每个刺激中是恒定的。另一方面，尽管300 g细丝的疼痛-VAS测量的SD显著大于100 g和600 g细丝，但CV显示刺激幅度有规律地降低。结果表明，无论刺激强度如何，电天平重复测量的CV值均一致，而重复测量的平均疼痛评分越高，疼痛VAS的CV值越低。这些结果表明，疼痛VAS评分较低本质上不客观，表明重复性较差。相比之下，疼痛-VAS的高评分更客观，实验疼痛感知的可重复性更好。(C)2014爱思唯尔爱尔兰有限公司版权所有。
Pain-VAS is quite subjective as a scale, but has a tendency to assume differences in repeatability in accordance with perceived pain intensity. The aim of the present study was to investigate the repeatability of regional differences with ratings of pain-VAS. Three experimental mechanical stimuli were applied to twenty seven healthy volunteers across four sessions over four weeks within individuals. The same stimuli were also simultaneously measured in the same manner with an electric balance. The magnitude of mechanical stimuli was determined by 100g, 300g, and 600g monofilaments. Standard deviations (SDs) across measurements with an electric balance showed a regular increase with stimulus magnitude, while coefficient variations (CVs) were constant in each stimulus. On the other hand, although SDs across pain-VAS measurements were significantly greater with the 300g filament than with the 100g and 600g filaments, CVs showed a regular decrease in magnitude of stimulus. These results showed that the CVs of repeated measurement with electric balance were consistent regardless of stimulus intensity, in contrast, CVs of pain-VAS decreased with greater pain rating averaged by repeated measurement. These results suggest that a low rating in pain-VAS is inherently less objective, indicating poor repeatability. In contrast, a high rating in pain-VAS is more objective with better repeatability for experimental pain perception. (C) 2014 Elsevier Ireland Ltd. All rights reserved.