A Visual Analogue Scale (VAS) is one of the pain rating scales used for the first time in 1921 by Hayes and Patterson[1]. It is often used in epidemiologic and clinical research to measure the intensity or frequency of various symptoms.
Hawker GA, Mian S, et al. Measures of adult pain: Visual Analog Scale for Pain (VAS Pain), Numeric Rating Scale for Pain (NRS Pain), McGill Pain Questionnaire (MPQ), Short-Form McGill Pain Questionnaire (SF-MPQ), Chronic Pain Grade Scale (CPGS), Short Form-36 Bodily Pain Scale (SF-36 BPS), and Measure of Intermittent and Constant Osteoarthritis ...
The meaning of VISUAL ANALOG SCALE is 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 —abbreviation VAS.
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Imagine ordering delivery the same way you would with a waiter—changing your mind, asking questions, and customizing as you go, all in one continuous conversation. Starting today, that's exactly how Alexa+ will work with a new way to order food delivery with Grubhub and Uber Eats. It's just the start of our long-term vision for how customers can interact with Alexa.
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