Annals of Rheumatic Diseases
Published online: 12 February 2018
Richard Holland1,2, William Tillett1,3, Eleanor Korendowych1, Charlotte Cavill1, Nicola Waldron1, Melanie Brooke1, Neil J McHugh1,3
Objectives: The Psoriatic Arthritis Impact of Disease (PsAID) Questionnaire is a recently developed patient-reported outcome measure (PROM) of disease impact in psoriatic arthritis (PsA). We set out to assess the validity in an independent cohort of patients, estimate the minimally important difference for improvement and explore the potential of individual components of the PsAID in clinical practice.