ArticleHealth and quality of life outcomes2021
Validation of a three-item Fatigue Severity Scale for patients with substance use disorder: a cohort study from Norway for the period 2016-2020.
Article in Health and quality of life outcomes, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Trial
- The efficacy of integrated hepatitis C virus treatment in relieving fatigue in people who inject drugs: a randomized controlled trial.Substance abuse treatment, prevention, and policy · 2023Trial
- From Disability to Diagnosis: Baseline Findings from the Calgary Functional Movement Disorder Registry.Movement disorders clinical practice · 2026Article
- Association between fatigue and functional status among patients with multiple sclerosis.Frontiers in neurology · 2026Article
- Validation of a French version of the DERS-SF and creation of a super short form (DERS-F SSF) for measuring emotion regulation difficulties.Scientific reports · 2025Article
- Article
- Low Testosterone Among Males in Opioid Agonist Therapy and Its Association With Fatigue and Psychological Distress.Journal of the Endocrine Society · 2025Article
- Integrating an exercise program into opioid agonist therapy: a pilot study on feasibility, fitness improvements, and participation challenges.Addiction science & clinical practice · 2025Article
- To smoothie or not to smoothie? A mixed-method approach of nutrition pilot intervention among individuals in opioid agonist treatment.BMC nutrition · 2025Article
- Evaluating Ma-ol-asal Syrup for Chemotherapy-induced Fatigue in Gastrointestinal Cancer Patients: A Randomized Double-blinded Placebo-controlled Clinical Trial :.Galen medical journal · 2025Article
- Article
- The impact of ageing on adults with cerebral palsy: the results of a national online survey.BJGP open · 2023Article
- Article
- Article
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Authors and funding
7 authors.
Funding
Abstract
backgroundLittle attention has been paid to customising fatigue questionnaires for patients with Substance Use Disorders (SUDs). The present study aims to validate and shorten the nine-item Fatigue Severity Scale (FSS-9) and Visual Analogue Fatigue Scale (VAFS) for use with this population.
methodsWe used data from a nested cohort with annual health assessments with responses on the FSS-9 and VAFS. During the period 2016-2020, 917 health assessments were collected from 655 patients with SUD in Bergen and Stavanger, Norway. A total of 225 patients answered the health assessment at least twice. We defined baseline as the first annual health assessment when the health assessments were sorted chronologically per patient. We checked for internal consistency, and we used longitudinal confirmatory factor analysis (CFA) and linear mixed model (LMM) analysis to validate and shorten the FSS-9 and VAFS.
resultsThe internal consistency of the FSS-9 was excellent with a Cronbach's α of 0.94 at baseline and 0.93 at the second annual health assessment. When shortening the FSS-9 to a three-item FSS (FSS-3, items 5-7), the Cronbach's α was 0.87 at baseline and 0.84 at the second health assessment. The internal consistency was not affected when the VAFS was added to the FSS-3 and the FSS-9. The longitudinal CFA model showed a well-fitting model for the FSS-3 (χ
conclusionThe FSS-9 could be shortened to the FSS-3 with high validity and reliability for patients with SUDs and the addition of VAFS did not provide much added variability.
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