ArticleInternal medicine (Tokyo, Japan)2025
Reliability and Validity of the Japanese Version of the Fatigue Assessment Scale.
Article in Internal medicine (Tokyo, Japan), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Beyond Fatigue: The Fatigue Assessment Scale as a Potential Indicator of Long COVID Severity.Journal of clinical medicine · 2026Article
- Reliability and Validity of the Simple Qi Deficiency Score in Patients with Post-COVID-19 Condition.Medicina (Kaunas, Lithuania) · 2026Article
- Exploratory Analysis of Serum IGF-I Levels and Symptom Trajectories in Long COVID During the Omicron Period.Journal of clinical medicine · 2026Article
- Clinical Utility of SARS-CoV-2 Antibody Titers in the Management of Patients With Long COVID Infected With the Omicron Variant.British journal of biomedical science · 2026Observational
- Symptomatic Trends and Time to Recovery for Long COVID Patients Infected During the Omicron Phase.Journal of clinical medicine · 2025Article
- A competency-based framework for preventing blood-borne pathogen occupational exposures in medical students: literature review and Delphi study.BMC medical education · 2025Review
- Clinical Characteristics of Vitamin D Deficiency Detected in Long COVID Patients During the Omicron Phase.Nutrients · 2025Observational
- Course of General Fatigue in Patients with Post-COVID-19 Conditions Who Were Prescribed Hochuekkito: A Single-Center Exploratory Pilot Study.Journal of clinical medicine · 2025Article
- Assessment of long COVID-19 symptoms and functional status: insights from a cross-sectional study.Frontiers in medicine · 2025Article
- Changes in Working Situations of Employed Long COVID Patients: Retrospective Study in Japanese Outpatient Clinic.Journal of clinical medicine · 2024Article
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5 authors.
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Abstract
Objective General fatigue is one of the most frequent chief complaints in primary care, and an accurate assessment of fatigue has a direct impact on a patient's quality of life and treatment decisions. The Fatigue Assessment Scale (FAS), a measure of general fatigue, is useful for assessing fatigue in diverse cultures and diseases. However, there has been no study showing the reliability and validity of the scale in the Japanese context. The present study assessed the reliability and validity of the Japanese version of the FAS. Methods This study was conducted on 649 patients with long COVID who had a high frequency of general fatigue. To test the structural validity of the FAS, the patients were randomly divided into two groups: one in which an exploratory factor analysis (EFA) was conducted and one in which a confirmatory factor analysis (CFA) was conducted. Cronbach's alpha was calculated to assess internal consistency reliability. Results As 58 patients had missing values, we analyzed the data of 591 patients. The EFA led to an FAS comprising two factors. The CFA showed an acceptable fit for this two-factor model. The internal consistency was found to be good (Cronbach's alpha =0.89). Conclusion This study verified the structural validity and internal consistency and reliability of the Japanese version of the FAS. The results indicate that the Japanese version of the FAS is useful for assessing general fatigue in patients with long COVID in Japan.
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