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Reference Bias: Presentation Of Extreme Health States Prior To Eq-Vas Improves Health-Related Quality Of Life Scores. A Randomised Cross-Over Trial, Steven Mcphail, Elaine Beller, Terry Haines

Elaine Beller

Background - Clinical practice and clinical research has made a concerted effort to move beyond the use of clinical indicators alone and embrace patient focused care through the use of patient reported outcomes such as health-related quality of life. However, unless patients give consistent consideration to the health states that give meaning to measurement scales used to evaluate these constructs, longitudinal comparison of these measures may be invalid. This study aimed to investigate whether patients give consideration to a standard health state rating scale (EQ-VAS) and whether consideration of good and poor health state descriptors immediately changes their self-report.

Methods …