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What is Visual analog scale is a - and explain in detail?
Ans. is 'a' i.e., Pain scale Visual analog Scaleo The visual analogue scale or visual analog scale (VAS) is a psychometric response scale which can be used in questionnaires.o It is a measurement instrument for subjective characteristics or attitudes that cannot be directly measured,o When responding to a VAS item, respondents specify their level of agreement to a statement by indicating a position along a continuous line between two end-points,o VAS is the most common pain scale for quantification of severity of pain.