visual analog scale

visual analog scale
visual analog scale n a testing technique for measuring subjective or behavioral phenomena (as pain or dietary consumption) in which a subject selects from a gradient of alternatives (as from „no pain” to „worst imaginable pain” or from „every day” to „never”) arranged in linear fashion abbr. VAS

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a scale that enables a patient to indicate the perceived level of intensity of a symptom (such as pain) by locating its position on a line representing a range from least intensity to greatest intensity.

Medical dictionary. 2011.

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