PROMIS Fatigue short forms are reliable and valid in adults with rheumatoid arthritis

Clifton O. Bingham, Anna Kristina Gutierrez, Alessandra Butanis, Vivian P. Bykerk, Jeffrey R. Curtis, Amye Leong, Anne Lyddiatt, W. Benjamin Nowell, Ana Maria Orbai, Susan J. Bartlett

Research output: Contribution to journalArticle

Abstract

Background: Fatigue is prevalent and impactful in rheumatoid arthritis (RA). There is no standardized measure for its assessment nor data concerning the performance of PROMIS-Fatigue short forms (SFs) in people with RA. We evaluated the construct validity of 4-, 7-, and 8-item PROMIS-Fatigue SFs in RA patients across the range of disease activity. Methods: Adult RA patients were recruited from an online patient community and an observational cohort from three academic medical centers. Measures included PROMIS-Fatigue SFs, other PROMIS measures, and other patient reported outcomes including RAND-36 Vitality, Fatigue NRS, and patient global assessment of disease activity. Other measures from the observational cohort included 28-joint swollen and tender joints, physician global assessment, and the composite RA clinical disease activity index (CDAI). Results: Two-hundred online participants and 348 participants from the observational cohort were included. PROMIS Fatigue SF scores spanned the measurement continuum and correlated highly with each other (r’s ≥ 0.91) and other fatigue measures (r’s ≥ 0.85). PROMIS-Fatigue SF scores were highly and inversely associated with Physical Function and Participation (r’s − 0.77 to − 0.78), and moderately-highly and positively correlated with pain, sleep disturbance, anxiety, and depression (r’s 0.60 to 0.75). PROMIS-Fatigue SF scores showed dose-response relationships across fatigue severity descriptors and CDAI categories. Conclusions: These results provide robust evidence supporting the construct validity of the 4, 7, and 8-item PROMIS-Fatigue SFs. They capture fatigue across the spectrum of RA disease activity in diverse groups of individuals and should be considered for use as patient-centered assessments of disease control and treatment efficacy.

Original languageEnglish (US)
Article number14
JournalJournal of Patient-Reported Outcomes
Volume3
Issue number1
DOIs
StatePublished - Dec 1 2019

Keywords

  • Fatigue
  • PROMIS
  • Patient reported outcomes
  • Rheumatoid arthritis
  • Validation

ASJC Scopus subject areas

  • Health Informatics
  • Health Information Management

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    Bingham, C. O., Gutierrez, A. K., Butanis, A., Bykerk, V. P., Curtis, J. R., Leong, A., Lyddiatt, A., Nowell, W. B., Orbai, A. M., & Bartlett, S. J. (2019). PROMIS Fatigue short forms are reliable and valid in adults with rheumatoid arthritis. Journal of Patient-Reported Outcomes, 3(1), [14]. https://doi.org/10.1186/s41687-019-0105-6