The visual analog scale (VAS) demonstrates comparable validity for perennial allergic rhinitis (PAR) and nonallergic rhinitis (NAR) severity and quality-of-life (QoL) impairment, according to a study ...
The expert panel agreed that the VAS-IBS gives a good picture of how a patient with IBS might feel, and all members except one thought that the VAS-IBS might be useful in clinical practice. Agreement ...
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