VALIDITY AND RELIABILITY OF VISUAL ANALOGUE SCALE (VAS) FOR PAIN MEASUREMENT

Aim: The aim of the study was to find out the validity and reliability of visual analogue scale in pain measurement. Methodology: A critical review was done for this study. Total ten studies are included in this study. The majority of study designs are cross sectional study. In analyses most of the studies used spearman correlation was used to see the strength of the study. The participants’ age was more than 18 years. The most of the studies seen the post-operative pain by pain measurement scale. The used scales were visual analogue scale, numeric rating scale, color analogue scale and faces pain scales. Conclusion: The majority of the studies showed that visual analogue scale is a valid and reliable scale. Also, it is an interval scale. So, in clinical practice we can use this scale in case of pain measurement as an outcome measure tool.