Kobayashi, Hidetsugu, Demura, Shinichi · [Nihon koshu eisei zasshi] Japanese journal of public health · 2002
This study looked at whether a new questionnaire (the SFS-Y) could help identify young people experiencing chronic fatigue by measuring different types of tiredness symptoms. Researchers gave the questionnaire to over 1,100 teenagers and found that the tool was quite good at spotting chronic fatigue, especially when it measured difficulty concentrating. The results suggest this questionnaire might be useful for screening young people who could develop ME/CFS-like conditions.
Early identification of chronic fatigue symptoms in adolescents is important because untreated fatigue may progress to ME/CFS. This study offers a validated screening tool that could help clinicians and researchers recognize at-risk young people before more severe disease develops.
This study does not prove that the SFS-Y can diagnose ME/CFS or that concentration difficulties cause chronic fatigue—it only shows an association. The cross-sectional design cannot establish whether fatigue symptoms precede or result from chronic fatigue, and results from Japanese adolescents may not apply to other age groups or populations. The study also does not distinguish between typical adolescent tiredness and pathological chronic fatigue.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Kobayashi, Hidetsugu & Demura, Shinichi (2002). [Relationship between chronic fatigue and subjective symptoms of fatigue with performance status (P.S.) and subjective fatigue scale for young adults (SFS-Y)].. [Nihon koshu eisei zasshi] Japanese journal of public health. https://pubmed.ncbi.nlm.nih.gov/12462040/
BibTeX
@article{mecfsatlas-kobayashi-2002-relationship-between,
author = {Kobayashi, Hidetsugu and Demura, Shinichi},
title = {[Relationship between chronic fatigue and subjective symptoms of fatigue with performance status (P.S.) and subjective fatigue scale for young adults (SFS-Y)].},
journal = {[Nihon koshu eisei zasshi] Japanese journal of public health},
year = {2002},
note = {PubMed: 12462040},
url = {https://www.mecfsatlas.com/evidence/kobayashi-2002-relationship-between},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/kobayashi-2002-relationship-between
Contribute
Private, reviewed by a human. Not a public comment thread.