Petersen, Marie Weinreich, Schröder, Andreas, Jørgensen, Torben et al. · Journal of psychosomatic research · 2019 · DOI
Researchers developed a new interview tool called RIFD to help doctors identify people with chronic fatigue syndrome and similar conditions that cause long-term physical symptoms. Instead of relying only on questionnaires, trained doctors conducted phone interviews with nearly 1,600 people from Denmark to see if the tool could accurately spot cases. The interview was quick, easy to do, and people were satisfied with it.
For ME/CFS research, standardized clinical interview tools like RIFD are essential to move beyond self-reported questionnaires and improve case identification in large population studies. This work demonstrates how structured physician-administered interviews can feasibly and reliably identify functional somatic disorders in epidemiological research, which may improve future prevalence estimates and phenotyping of ME/CFS. Better case identification tools strengthen the evidence base for understanding ME/CFS burden and characteristics in affected populations.
This study does not prove that RIFD is a validated diagnostic tool for ME/CFS or functional somatic disorders in routine clinical practice, as the validation sample was very small (n=25) and further testing is needed. It also does not establish the etiology or underlying mechanisms of these conditions, nor does it demonstrate superiority of RIFD over existing diagnostic criteria in clinical settings. The feasibility demonstrated in a Danish general population may not generalize to other countries 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
Petersen, Marie Weinreich, Schröder, Andreas, Jørgensen, Torben, Ørnbøl, Eva, Dantoft, Thomas Meinertz, Eliasen, Marie, et al. (2019). RIFD - A brief clinical research interview for functional somatic disorders and health anxiety.. Journal of psychosomatic research. https://doi.org/10.1016/j.jpsychores.2019.04.001
BibTeX
@article{mecfsatlas-petersen-2019-rifd-brief,
author = {Petersen, Marie Weinreich and Schröder, Andreas and Jørgensen, Torben and Ørnbøl, Eva and Dantoft, Thomas Meinertz and Eliasen, Marie and Fink, Per},
title = {RIFD - A brief clinical research interview for functional somatic disorders and health anxiety.},
journal = {Journal of psychosomatic research},
year = {2019},
doi = {10.1016/j.jpsychores.2019.04.001},
note = {PubMed: 30955913},
url = {https://www.mecfsatlas.com/evidence/petersen-2019-rifd-brief},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/petersen-2019-rifd-brief
Contribute
Private, reviewed by a human. Not a public comment thread.