A comparison of pain rating scales by sampling from clinical trial data
A comparison of pain rating scales by sampling from clinical trial data
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DOI：
10.1097/00002508-200003000-00005
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发表时间：
2000-03-01
影响因子：
2.9
通讯作者：
Skovlund, E
中科院分区：
文献类型：
--
作者：
Breivik, EK;Björnsson, GA;Skovlund, E
设计：对口腔手术后急性疼痛患者同时进行多项疼痛评估，比较四类言语评定量表(VRS-4)和11分数字评定量表(NRS-11)与100 mm视觉模拟评定量表(VAS)的敏感性差异。结果：VRS-4或NRS-11的VAS评分在不同患者之间以及同一患者的重复测量中都有相当大的差异。仿真实验表明，在所有的仿真中，VAS都比VRS-4具有更强的性能。结论：在该急性疼痛模型中，VRS-4的敏感性低于VAS。模拟结果显示，在比较急性术后疼痛强度时，NRS-11和VAS的敏感度相似。因此，VAS和NRS-11之间的选择可以基于主观偏好。
Objective: The goals of this study were to examine agreement and estimate differences in sensitivity between pain assessment scales.Design: Multiple simultaneous pain assessments by patients in acute pain after oral surgery were used to compare a four-category verbal rating scale (VRS-4) and an 11-point numeric rating scale (NRS-11) with a 100-mm visual analog scale (VAS). The sensitivity of the scales (i.e., their ability [power] to detect differences between treatments) was compared in a simulation model by sampling from true pairs of observations using varying treatment differences of predetermined size.Results: There was considerable variability in VAS scores within each VRS-4 or NRS-11 category both between patients and for repeated measures from the same patient. Simulation experiments showed that the VAS was systematically more powerful than the VRS-4 in all simulations performed. The sensitivity of the VAS and NRS-11 was approximately equal.Conclusions: In this acute pain model, the VRS-4 was less sensitive than the VAS. The simulation results demonstrated similar sensitivity of the NRS-11 and VAS when comparing acute postoperative pain intensity. The choice between the VAS and NRS-11 can thus be based on subjective preferences.