The Pain Visual Analog Scale: Is It Linear or Nonlinear?
- 1 December 1999
- journal article
- clinical trial
- Published by Wolters Kluwer Health in Anesthesia & Analgesia
- Vol. 89 (6) , 1517-20
- https://doi.org/10.1097/00000539-199912000-00038
Abstract
A change in the visual analog scale score represents a relative change in the magnitude of pain sensation. Use of the VAS in comparative analgesic trials can now meaningfully quantify differences in potency and efficacy.Keywords
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