Carlsson Anna Maria
Department of Psychology, University of Stockholm, Karolinska Sjukhuset, S10401 StockholmSweden Departments of Neurosurgery and Neurology, Karolinska Sjukhuset, S10401 StockholmSweden.
Pain. 1983 May;16(1):87-101. doi: 10.1016/0304-3959(83)90088-X.
The visual analogue scale (VAS) is a simple and frequently used method for the assessment of variations in intensity of pain. In clinical practice the percentage of pain relief, assessed by VAS, is often considered as a measure of the efficacy of treatment. However, as illustrated in the present study, the validity of VAS estimates performed by patients with chronic pain may be unsatisfactory. Two types of VAS, an absolute and a comparative scale, were compared with respect to factors influencing the reliability and validity of pain estimates. As shown in this study the absolute type of VAS seems to be less sensitive to bias than the comparative one and is therefore preferable for general clinical use. Moreover, the patients appear to differ considerably in their ability to use the VAS reliably. When assessing efficacy of treatment attention should therefore be paid to several complementary indices of pain relief as well as to the individual's tendency to bias his estimates.
视觉模拟评分法（VAS）是一种简单且常用的评估疼痛强度变化的方法。在临床实践中，通过VAS评估的疼痛缓解百分比常被视为治疗效果的一种衡量指标。然而，如本研究所示，慢性疼痛患者进行的VAS评估的有效性可能并不理想。就影响疼痛评估可靠性和有效性的因素而言，对两种类型的VAS（绝对量表和比较量表）进行了比较。如本研究所示，绝对类型的VAS似乎比比较类型的VAS对偏差不太敏感，因此更适合一般临床使用。此外，患者在可靠使用VAS的能力方面似乎存在很大差异。因此，在评估治疗效果时，应注意疼痛缓解的几个补充指标以及个体对评估产生偏差的倾向。
