Seylanova, Nina, Chernyavskaya, Anastasia, Degtyareva, Natalia et al. · The European respiratory journal · 2024 · DOI
This study developed a standardized list of health outcomes and measurement tools that doctors and researchers should use when evaluating children and young people with long COVID. International experts from 37 countries agreed on seven key areas to measure: fatigue, post-exertion symptoms, changes in work or school, and cardiovascular, neurological, gastrointestinal, and physical problems. They also identified specific questionnaires that work best for measuring fatigue, digestive symptoms, thinking problems, and overall functioning.
For ME/CFS and long COVID patients, particularly children, standardized outcome measurement is critical for ensuring consistent evaluation across research studies and clinical care settings. This consensus framework enables better comparison of treatment effectiveness, more accurate tracking of disease severity, and improved clinical management. Having validated instruments for fatigue and post-exertional symptoms—hallmark features of ME/CFS—supports rigorous, comparable research that can advance understanding and treatment of these debilitating conditions.
This study does not establish which treatments are effective for long COVID in children, nor does it define the underlying biological mechanisms of post-COVID-19 condition. It also does not demonstrate that these outcome measures will detect clinically meaningful changes or that they are suitable for all populations with ME/CFS. The consensus process reflects expert opinion rather than empirical validation of instrument responsiveness or sensitivity in pediatric long COVID populations.
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
Seylanova, Nina, Chernyavskaya, Anastasia, Degtyareva, Natalia, Mursalova, Aigun, Ajam, Ali, Xiao, Lin, et al. (2024). Core outcome measurement set for research and clinical practice in post-COVID-19 condition (long COVID) in children and young people: an international Delphi consensus study "PC-COS Children".. The European respiratory journal. https://doi.org/10.1183/13993003.01761-2023
BibTeX
@article{mecfsatlas-seylanova-2024-core-outcome,
author = {Seylanova, Nina and Chernyavskaya, Anastasia and Degtyareva, Natalia and Mursalova, Aigun and Ajam, Ali and Xiao, Lin and Aktulaeva, Khazhar and Roshchin, Philipp and Bobkova, Polina and Aiyegbusi, Olalekan Lee and Anbu, Anbarasu Theodore and Apfelbacher, Christian and Asadi-Pooya, Ali Akbar and Ashkenazi-Hoffnung, Liat and Brackel, Caroline and Buonsenso, Danilo and de Groote, Wouter and Diaz, Janet V and Dona, Daniele and Dunn Galvin, Audrey and Genuneit, Jon and Goss, Helen and Hughes, Sarah E and Jones, Christina J and Kuppalli, Krutika and Malone, Laura A and McFarland, Sammie and Needham, Dale M and Nekliudov, Nikita and Nicholson, Timothy R and Oliveira, Carlos R and Schiess, Nicoline and Segal, Terry Y and Sigfrid, Louise and Thorne, Claire and Vijverberg, Susanne and Warner, John O and Were, Wilson Milton and Williamson, Paula R and Munblit, Daniel and PC-COS Children Study Group},
title = {Core outcome measurement set for research and clinical practice in post-COVID-19 condition (long COVID) in children and young people: an international Delphi consensus study "PC-COS Children".},
journal = {The European respiratory journal},
year = {2024},
doi = {10.1183/13993003.01761-2023},
note = {PubMed: 38359962},
url = {https://www.mecfsatlas.com/evidence/seylanova-2024-core-outcome},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-26. https://www.mecfsatlas.com/evidence/seylanova-2024-core-outcome
Contribute
Private, reviewed by a human. Not a public comment thread.