Crawley, Esther M, Emond, Alan M, Sterne, Jonathan A C · BMJ open · 2011 · DOI
Researchers set up clinics in three schools to identify students missing a lot of school without an obvious reason. They found that ME/CFS was responsible for about 1 in 100 cases of unexplained school absence. Students identified through this school-based approach were less severely ill than those who went to specialist clinics through typical healthcare pathways, and many improved quickly once they received appropriate care.
This study demonstrates that ME/CFS is a substantial but underrecognized cause of school absence, suggesting many cases go undiagnosed. The finding that early intervention in less severely affected patients leads to rapid recovery highlights the potential value of early identification and treatment, offering hope that timely specialist care can improve outcomes in pediatric ME/CFS.
This study does not prove that early detection causes better outcomes—the less severe baseline severity in school-identified cases may explain their better prognosis independent of intervention timing. The study also cannot establish causation regarding fatigue and absence, only association. Results from three schools in one region may not generalize to other populations or healthcare systems.
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
Crawley, Esther M, Emond, Alan M, & Sterne, Jonathan A C (2011). Unidentified Chronic Fatigue Syndrome/myalgic encephalomyelitis (CFS/ME) is a major cause of school absence: surveillance outcomes from school-based clinics.. BMJ open. https://doi.org/10.1136/bmjopen-2011-000252
BibTeX
@article{mecfsatlas-crawley-2011-unidentified-chronic,
author = {Crawley, Esther M and Emond, Alan M and Sterne, Jonathan A C},
title = {Unidentified Chronic Fatigue Syndrome/myalgic encephalomyelitis (CFS/ME) is a major cause of school absence: surveillance outcomes from school-based clinics.},
journal = {BMJ open},
year = {2011},
doi = {10.1136/bmjopen-2011-000252},
note = {PubMed: 22155938},
url = {https://www.mecfsatlas.com/evidence/crawley-2011-unidentified-chronic},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/crawley-2011-unidentified-chronic
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