Evidence map›Paper›PMID 29562932›Full record

Trial reportBMC psychology2018

Rethinking the treatment of chronic fatigue syndrome-a reanalysis and evaluation of findings from a recent major trial of graded exercise and CBT.

Carolyn E Wilshire, Tom Kindlon, Robert Courtney, Alem Matthees, David Tuller, Keith Geraghty, Bruce Levin

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in BMC psychology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 2 pooled it
9.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

53 citing papers in PubMed, 2 syntheses or guidelines pooled it, 119 citations in OpenAlex.

  1. Recent research in myalgic encephalomyelitis/chronic fatigue syndrome: an evidence map.Health technology assessment (Winchester, England) · 2025
    Pooled it
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  3. Review
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  5. An Overview of Severe Myalgic Encephalomyelitis.Journal of clinical medicine · 2026
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 4 countries.

Carolyn E WilshireSchool of Psychology, Victoria University of Wellington, New Zealand, P.O. Box 600, Wellington, New Zealand. Carolyn.Wilshire@vuw.ac.nz.ORCID http://orcid.org/0000-0002-0126-4708
Tom KindlonIrish ME/CFS Association, Dublin, Ireland.
Robert Courtney, London, UK.
Alem Matthees, Perth, Australia.
David TullerSchool of Public Health, University of California, Berkeley, California, USA.
Keith GeraghtySchool of Health Sciences, University of Manchester, Manchester, UK.
Bruce LevinDepartment of Biostatistics, Columbia University, New York, USA.
Columbia University · USForas Áiseanna Saothair · IEManchester Academic Health Science Centre · GBUniversity of California, Berkeley · USVictoria University of Wellington · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe PACE trial was a well-powered randomised trial designed to examine the efficacy of graded exercise therapy (GET) and cognitive behavioural therapy (CBT) for chronic fatigue syndrome. Reports concluded that both treatments were moderately effective, each leading to recovery in over a fifth of patients. However, the reported analyses did not consistently follow the procedures set out in the published protocol, and it is unclear whether the conclusions are fully justified by the evidence.

methodsHere, we present results based on the original protocol-specified procedures. Data from a recent Freedom of Information request enabled us to closely approximate these procedures. We also evaluate the conclusions from the trial as a whole.

resultsOn the original protocol-specified primary outcome measure - overall improvement rates - there was a significant effect of treatment group. However, the groups receiving CBT or GET did not significantly outperform the Control group after correcting for the number of comparisons specified in the trial protocol. Also, rates of recovery were consistently low and not significantly different across treatment groups. Finally, on secondary measures, significant effects were almost entirely confined to self-report measures. These effects did not endure beyond two years.

conclusionsThese findings raise serious concerns about the robustness of the claims made about the efficacy of CBT and GET. The modest treatment effects obtained on self-report measures in the PACE trial do not exceed what could be reasonably accounted for by participant reporting biases.

Indexed as

Cognitive Behavioral TherapyExercise TherapyAdultFatigue Syndrome, ChronicFollow-Up StudiesHumansSelf ReportTreatment OutcomeChronic fatigue syndromeCognitive behavioral therapyGraded exercise therapyMyalgic encephalomyelitis

Identifiers

PMID29562932
PMCPMC5863477
OpenAlexW2794591439

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.