The significance of response shift in sinus surgery outcomes.


BACKGROUND Functional endoscopic sinus surgery (FESS) aims to improve quality-of-life (QOL). Perception of QOL can change according to one's current medical or emotional state. This is known as response shift. It can be measured by the "then-test," which asks patients to report pretreatment symptoms after receiving treatment. Patients often do not… (More)
DOI: 10.1002/alr.21420


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