Clinical Trial – Page 12 – American ME and CFS Society

Once again, the PACE authors respond to concerns with empty answers

Abstract:

In their response to Geraghty, the PACE investigators state that they have “repeatedly addressed” the various methodological concerns raised about the trial. While this is true, these responses have repeatedly failed to provide satisfactory explanations for the trial’s very serious flaws. This commentary examines how the current response once again demonstrates the ways in which the investigators avoid acknowledging the obvious problems with PACE and offer non-answers instead—arguments that fall apart quickly under scrutiny.

Source: David Tuller. Once again, the PACE authors respond to concerns with empty answers. Journal of Health Psychology. First Published April 27, 2017. http://journals.sagepub.com/doi/full/10.1177/1359105317703788 (Full article)

PACE investigators’ response is misleading regarding patient survey results

Abstract:

The PACE investigators’ citation of a patient survey might mislead readers into thinking that the experience of people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) supports PACE findings. In fact, patient survey evidence directly contradicts the results of the PACE trial. A review of survey data published between 2001 and 2015 reveals that for most patients, graded exercise therapy leads to worsening of symptoms, cognitive behavioural therapy leads to no change in symptoms, and pacing leads to improvement. The experience of people with ME/CFS as reflected in surveys is a rich source of information, made more compelling by the consistency of results. Consequently, patient survey evidence can be used to inform practice, research and guidelines. Misrepresentation of patient experience must be vigorously challenged, to ensure that patients and health professionals make decisions about therapies based on accurate information.

Source: Karen D. Kirke. PACE investigators’ response is misleading regarding patient survey results. Journal of Health Psychology. First Published May 11, 2017. http://journals.sagepub.com/doi/full/10.1177/1359105317703787 (Full article)

Randomised controlled trial of online continuing education for health professionals to improve the management of chronic fatigue syndrome: a study protocol

Abstract:

INTRODUCTION: Chronic fatigue syndrome (CFS) is a serious and debilitating illness that affects between 0.2%-2.6% of the world's population. Although there is level 1 evidence of the benefit of cognitive behaviour therapy (CBT) and graded exercise therapy (GET) for some people with CFS, uptake of these interventions is low or at best untimely. This can be partly attributed to poor clinician awareness and knowledge of CFS and related CBT and GET interventions. This trial aims to evaluate the effect of participation in an online education programme, compared with a wait-list control group, on allied health professionals' knowledge about evidence-based CFS interventions and their levels of confidence to engage in the dissemination of these interventions.

METHODS AND ANALYSIS: A randomised controlled trial consisting of 180 consenting allied health professionals will be conducted. Participants will be randomised into an intervention group (n=90) that will receive access to the online education programme, or a wait-list control group (n=90). The primary outcomes will be: 1) knowledge and clinical reasoning skills regarding CFS and its management, measured at baseline, postintervention and follow-up, and 2) self-reported confidence in knowledge and clinical reasoning skills related to CFS. Secondary outcomes include retention of knowledge and satisfaction with the online education programme. The influence of the education programme on clinical practice behaviour, and self-reported success in the management of people with CFS, will also be assessed in a cohort study design with participants from the intervention and control groups combined.

ETHICS AND DISSEMINATION: The study protocol has been approved by the Human Research Ethics Committee at The University of New South Wales (approval number HC16419). Results will be disseminated via peer-reviewed journal articles and presentations at scientific conferences and meetings.

TRIAL REGISTRATION: ACTRN12616000296437.

Source: Li SH, Sandler CX1, Casson SM, Cassar J, Bogg T, Lloyd AR, Barry BK. Randomised controlled trial of online continuing education for health professionals to improve the management of chronic fatigue syndrome: a study protocol. BMJ Open. 2017 May 10;7(5):e014133. doi: 10.1136/bmjopen-2016-014133. https://www.ncbi.nlm.nih.gov/pubmed/28495811

Do graded activity therapies cause harm in chronic fatigue syndrome?

Abstract:

Reporting of harms was much better in the PACE (Pacing, graded Activity, and Cognitive behavioural therapy: a randomised Evaluation) trial than earlier chronic fatigue syndrome trials of graded exercise therapy and cognitive behavioural therapy. However, some issues remain. The trial’s poor results on objective measures of fitness suggest a lack of adherence to the activity component of these therapies. Therefore, the safety findings may not apply in other clinical contexts. Outside of clinical trials, many patients report deterioration with cognitive behavioural therapy and particularly graded exercise therapy. Also, exercise physiology studies reveal abnormalities in chronic fatigue syndrome patients’ responses to exertion. Given these considerations, one cannot conclude that these interventions are safe and risk-free.

Source: Tom Kindlon. Do graded activity therapies cause harm in chronic fatigue syndrome? Journal of Health Psychology. March 20, 2017. http://journals.sagepub.com/doi/full/10.1177/1359105317697323 (Full article)

The problem of bias in behavioural intervention studies: Lessons from the PACE trial

Abstract:

Geraghty’s recent editorial on the PACE trial for chronic fatigue syndrome has stimulated a lively discussion. Here, I consider whether the published claims are justified by the data. I also discuss wider issues concerning trial procedures, researcher allegiance and participant reporting bias. Cognitive behavioural therapy and graded exercise therapy had modest, time-limited effects on self-report measures, but little effect on more objective measures such as fitness and employment status. Given that the trial was non-blinded, and the favoured treatments were promoted to participants as ‘highly effective’, these effects may reflect participant response bias. In non-blinded trials, the issue of reporting biases deserves greater attention in future.

Source: Carolyn Wilshire. The problem of bias in behavioural intervention studies: Lessons from the PACE trial. Journal of Health Psychology. First published date: March-23-2017. http://journals.sagepub.com/doi/full/10.1177/1359105317700885 (Full article)

PACE team response shows a disregard for the principles of science. Journal of Health Psychology

Abstract:

The PACE trial of cognitive behavioural therapy and graded exercise therapy for chronic fatigue syndrome/myalgic encephalomyelitis has raised serious questions about research methodology. An editorial article by Geraghty gives a fair account of the problems involved, if anything understating the case. The response by White et al. fails to address the key design flaw, of an unblinded study with subjective outcome measures, apparently demonstrating a lack of understanding of basic trial design requirements. The failure of the academic community to recognise the weakness of trials of this type suggests that a major overhaul of quality control is needed.

Source: Jonathan Edwards. PACE team response shows a disregard for the principles of science. Journal of Health Psychology. First published date: March-28-2017. http://journals.sagepub.com/doi/full/10.1177/1359105317700886 (Full article)

Acupuncture and Moxibustion have Different Effects on Fatigue by Regulating the Autonomic Nervous System: A Pilot Controlled Clinical Trial

Abstract:

In order to investigate the different effects of acupuncture and moxibustion on chronic fatigue syndrome (CFS) and alterations in the autonomic nervous system by measuring heart rate variability (HRV).

Forty-five participants were recruited and randomly divided into 3 groups using a randomization schedule. The control group (CG, n = 15) and the acupuncture group (AG, n = 15) were treated by manipulation acupuncture, and the moxibustion group (MG, n = 15) was treated by indirect moxibustion. Primary outcomes were the scores of the Fatigue Assessment Instrument (FAI). Secondary outcomes were the HRV parameters which can reflect activity of the autonomic nervous system.

This trial considered both instantaneous changes and long-term effectiveness. FAI scores decreased after the 4th and 10th treatments in the 3 groups. The decrease in FAI in the MG was greater than that in the AG. Acupuncture was more effective in instantaneous changes of HRV and moxibustion in long-term aspects. Both acupuncture and moxibustion improved fatigue in CFS patients, but moxibustion was more effective.

The possible mechanism of the intervention may be through activation of the vagus nerve. Moxibustion was more effective than acupuncture in long-term treatment of CFS.

Source: Shu Q, Wang H, Litscher D, Wu S, Chen L, Gaischek I, Wang L, He W, Zhou H, Litscher G, Liang F. Acupuncture and Moxibustion have Different Effects on Fatigue by Regulating the Autonomic Nervous System: A Pilot Controlled Clinical Trial. Sci Rep. 2016 Nov 25;6:37846. doi: 10.1038/srep37846. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5122953/ (Full article)

‘PACE-Gate’: When clinical trial evidence meets open data access

Abstract:

Science is not always plain sailing and sometimes the voyage is across an angry sea. A recent clinical trial of treatments for chronic fatigue syndrome (the PACE trial) has whipped up a storm of controversy. Patients claim the lead authors overstated the effectiveness of cognitive behavioural therapy and graded exercise therapy by lowering the thresholds they used to determine improvement. In this extraordinary case, patients discovered that the treatments tested had much lower efficacy after an information tribunal ordered the release of data from the PACE trial to a patient who had requested access using a freedom of information request.

Source: Geraghty KJ. ‘PACE-Gate’: When clinical trial evidence meets open data access. J Health Psychol. 2016 Nov 1. pii: 1359105316675213. [Epub ahead of print] https://www.ncbi.nlm.nih.gov/pubmed/27807258

Managed Activity Graded Exercise iN Teenagers and pre-Adolescents (MAGENTA) feasibility randomised controlled trial: study protocol

Abstract:

INTRODUCTION: Paediatric chronic fatigue syndrome or myalgic encephalomyelitis (CFS/ME) is a relatively common and disabling condition, yet there is a limited evidence base for treatment. There is good evidence that graded exercise therapy is moderately effective in adults with CFS/ME, but there is little evidence for the effectiveness, cost-effectiveness, acceptability or best method of delivery for paediatric CFS/ME. This study aims to investigate the acceptability and feasibility of carrying out a multicentre randomised controlled trial investigating the effectiveness of graded exercise therapy compared with activity management for children/teenagers who are mildly or moderately affected with CFS/ME.

METHODS AND ANALYSIS: 100 paediatric patients (8-17 years) with CFS/ME will be recruited from 3 specialist UK National Health Service (NHS) CFS/ME services (Bath, Cambridge and Newcastle). Patients will be randomised (1:1) to receive either graded exercise therapy or activity management. Feasibility analysis will include the number of young people eligible, approached and consented to the trial; attrition rate and treatment adherence; questionnaire and accelerometer completion rates. Integrated qualitative methods will ascertain perceptions of feasibility and acceptability of recruitment, randomisation and the interventions. All adverse events will be monitored to assess the safety of the trial.

ETHICS AND DISSEMINATION: The trial has received ethical approval from the National Research Ethics Service (South West-Frenchay 15/SW/0124).

TRIAL REGISTRATION NUMBER: ISRCTN23962803; Pre-results.

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Source: Brigden A, Beasant L, Hollingworth W, Metcalfe C, Gaunt D, Mills N, Jago R, Crawley E. Managed Activity Graded Exercise iN Teenagers and pre-Adolescents (MAGENTA) feasibility randomised controlled trial: study protocol. BMJ Open. 2016 Jul 4;6(7):e011255. doi: 10.1136/bmjopen-2016-011255. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4947787/ (Full article)

Long-term methylphenidate intake in chronic fatigue syndrome

Abstract:

OBJECTIVE: Concentration disturbances are frequent in chronic fatigue syndrome (CFS). In a placebo-controlled double-blind crossover study, methylphenidate over 4 weeks was superior to placebo in the relief of fatigue and concentration disturbance. This observational study describes the effect of long-term methylphenidate intake on fatigue, concentration, and daily life activities, as reported by the patients themselves.

METHODS: A questionnaire was sent to all CFS patients who were prescribed methylphenidate at the general internal medicine department of a university hospital between August 2004 and February 2007, for possible improvement of concentration difficulties and fatigue.

RESULTS: Out of 194 consecutive patients, 149 (76.8%) sent the questionnaire back. At the time of the questionnaire, 65.3% had stopped the intake of methylphenidate, 34.7% still took it daily or occasionally. Among the patients who continued methylphenidate, 48% reported an at least 50% improvement of fatigue, and 62% reported an at least 50% improvement of concentration difficulties. This continued intake of methylphenidate resulted in more working hours in these patients. Side effects (agitation, palpitations, and dry mouth) were reported significantly more in patients who had stopped methylphenidate than in those who still took it.

CONCLUSION: The long-term intake of methylphenidate by CFS patients with concentration difficulties has a positive effect in about one out of three patients.

Source: Blockmans D, Persoons P. Long-term methylphenidate intake in chronic fatigue syndrome. Acta Clin Belg. 2016 Dec;71(6):407-414. Epub 2016 Jun 27. https://www.ncbi.nlm.nih.gov/pubmed/27351244