Hadzi-Pavlovic, D, Hickie, I B, Wilson, A J et al. · Social psychiatry and psychiatric epidemiology · 2000 · DOI
This study developed and tested two screening tools (called SOFA/CFS and SOFA/GP) to help doctors identify patients with chronic fatigue syndrome and prolonged fatigue conditions. Researchers tested these tools with 770 CFS patients in specialist clinics and 1,593 people in regular primary care settings, and found that both instruments could reliably spot these fatigue syndromes. The study also showed that fatigue syndromes have distinct patterns that are separate from anxiety and depression, and these patterns remained stable over a 12-month follow-up.
This study provides validated screening tools that could help primary care physicians and specialists identify ME/CFS patients more reliably, potentially reducing diagnostic delays. By demonstrating that fatigue syndromes have distinct characteristics separate from psychiatric conditions, the research supports the legitimacy of these conditions as medical entities rather than purely psychological disorders.
This study does not establish the biological cause of ME/CFS or prove that these fatigue syndromes are fundamentally distinct diseases—it only shows they can be identified and measured as distinct symptom clusters. The screening tool validation does not test whether these instruments predict disease progression, treatment response, or long-term outcomes. Cross-sectional and longitudinal screening data do not address mechanism of disease or explain why fatigue syndromes develop.
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
Hadzi-Pavlovic, D, Hickie, I B, Wilson, A J, Davenport, T A, Lloyd, A R, & Wakefield, D (2000). Screening for prolonged fatigue syndromes: validation of the SOFA scale.. Social psychiatry and psychiatric epidemiology. https://doi.org/10.1007/s001270050266
BibTeX
@article{mecfsatlas-hadzi-pavlovic-2000-screening-prolonged,
author = {Hadzi-Pavlovic, D and Hickie, I B and Wilson, A J and Davenport, T A and Lloyd, A R and Wakefield, D},
title = {Screening for prolonged fatigue syndromes: validation of the SOFA scale.},
journal = {Social psychiatry and psychiatric epidemiology},
year = {2000},
doi = {10.1007/s001270050266},
note = {PubMed: 11127722},
url = {https://www.mecfsatlas.com/evidence/hadzi-pavlovic-2000-screening-prolonged},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/hadzi-pavlovic-2000-screening-prolonged
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