How should we use the visual analogue scale (VAS) in rehabilitation outcomes? II: Visual analogue scales as ratio scales: an alternative to the view of Kersten et al.
J Rehabil Med. 2012 Sep;44(9):800-1; discussion 803-4. doi: 10.2340/16501977-1031.
J Rehabil Med. 2012.
PMID: 22915047
Free PMC article.
No abstract available.