Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research
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Randomized Controlled Trial Multicenter Study
Item-level psychometric properties for a new patient-reported psoriasis symptom diary.
This research evaluated the psychometric properties of a new Psoriasis Symptom Diary, identified diary responder definitions for use in determining whether a patient has experienced clinically meaningful change, and refined diary item content for use in future clinical trials. ⋯ The 16-item Psoriasis Symptom Diary demonstrated favorable psychometric properties and is a brief, useful tool for measuring patient-based symptoms and the impact of chronic plaque psoriasis.