The patient experience with fatigue and content validity of a measure to assess fatigue severity: qualitative research in patients with ankylosing spondylitis (AS)

Title
The patient experience with fatigue and content validity of a measure to assess fatigue severity: qualitative research in patients with ankylosing spondylitis (AS)
Authors
Keywords
Ankylosing spondylitis, Concept elicitation, Content validity, Fatigue, Patient reported outcomes (PRO), Worst Fatigue Numeric Rating Scale (WF-NRS)
Journal
Health and Quality of Life Outcomes
Volume 11, Issue 1, Pages 192
Publisher
Springer Nature
Online
2013-11-11
DOI
10.1186/1477-7525-11-192

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