RETRACTED ARTICLE: Content validity and psychometric evaluation of Functional Assessment of Chronic Illness Therapy-Fatigue in patients with psoriatic arthritis

• Main Authors: David Cella (Author), Hilary Wilson (Author), Huda Shalhoub (Author), Dennis A. Revicki (Author), Joseph C. Cappelleri (Author), Andrew G. Bushmakin (Author), Elizabeth Kudlacz (Author), Ming-Ann Hsu (Author)
• Format: Bog
• Udgivet: SpringerOpen, 2019-01-01T00:00:00Z.
• Fag: article
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Abstract Background To evaluate the measurement properties (e.g. content validity, reliability and ability to detect change) of the Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue scale in patients with active psoriatic arthritis (PsA). Methods One-on-one semi-structured qualitative...