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Open Access 13-11-2024 | Fatigue

Psychometric evaluation of the Functional Assessment of chronic illness therapy–fatigue (FACIT-Fatigue) in adults with moderately to severely active Crohn’s disease

Authors: Miguel Regueiro, Sylvia Su, Aisha Vadhariya, Xian Zhou, Frederick Durand, Larissa Stassek, Ariane K. Kawata, Claudine Clucas, Vipul Jairath

Published in: Quality of Life Research | Issue 2/2025

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Abstract

Purpose

To provide further evidence on the psychometric properties of the Functional Assessment of Chronic Illness Therapy–Fatigue (FACIT-Fatigue) in moderately to severely active Crohn’s disease (CD), and to determine thresholds for meaningful improvement in fatigue.

Methods

The FACIT-Fatigue is a 13-item patient-reported outcome measure (range, 0–52) assessing fatigue over the previous week. Using pooled data from the Phase 3 VIVID-1 study of moderately to severely active CD, psychometric properties of FACIT-Fatigue were evaluated up to Week 52. The Patient Global Rating of Severity (PGRS) and Patient Global Impression of Change (PGIC) were used as primary anchors to estimate the FACIT-Fatigue score change representing meaningful improvement.

Results

Psychometric analyses included 1065 adults. The FACIT-Fatigue demonstrated good internal consistency, and correlations between individual items and the total score were moderate to strong. The FACIT-Fatigue score showed moderate to strong correlations with other patient-reported assessments and weak correlations with endoscopic/laboratory assessments. The FACIT-Fatigue differentiated between distinct groups of participants varying in disease severity, quality of life, and fatigue based on PGRS and other assessments. FACIT-Fatigue improvements during the study differed significantly between most PGRS change and PGIC categories. Anchor-based estimates suggested a 6–9-point increase in the FACIT-Fatigue total score as meaningful improvement.

Conclusions

The FACIT-Fatigue demonstrated strong psychometric properties in the VIVID-1 population of adults with moderately to severely active CD and determined a FACIT-Fatigue score change threshold representing meaningful improvement.

Trial registration

NCT03926130. Registered 23 April 2019, https://​clinicaltrials.​gov/​study/​NCT03926130.
Appendix
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Metadata
Title
Psychometric evaluation of the Functional Assessment of chronic illness therapy–fatigue (FACIT-Fatigue) in adults with moderately to severely active Crohn’s disease
Authors
Miguel Regueiro
Sylvia Su
Aisha Vadhariya
Xian Zhou
Frederick Durand
Larissa Stassek
Ariane K. Kawata
Claudine Clucas
Vipul Jairath
Publication date
13-11-2024
Publisher
Springer New York
Published in
Quality of Life Research / Issue 2/2025
Print ISSN: 0962-9343
Electronic ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-024-03829-3