Graded exercise therapy compared to activity management for paediatric chronic fatigue syndrome/myalgic encephalomyelitis: pragmatic randomized controlled trial

Abstract

The MAGENTA pragmatic parallel groups randomized controlled trial compared graded exercise therapy (GET) with activity management (AM) in treating paediatric myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS). Children aged 8-17 years with mild/moderate ME/CFS and presenting to NHS specialist paediatric services were allocated at random to either individualised flexible treatment focussing on physical activity (GET, 123 participants) or on managing cognitive, school and social activity (AM, 118 participants) delivered by NHS therapists.

The primary outcome was the self-reported short-form 36 physical function subscale (SF-36-PFS) after 6 months, with higher scores indicating better functioning. After 6 months, data were available for 201 (83%) participants who received a mean of 3.9 (GET) or 4.6 (AM) treatment sessions. Comparing participants with measured outcomes in their allocated groups, the mean SF-36-PFS score changed from 54.8 (standard deviation 23.7) to 55.7 (23.3) for GET and from 55.5 (23.1) to 57.7 (26.0) for AM giving an adjusted difference in means of -2.02 (95% confidence interval -7.75, 2.70). One hundred thirty-five participants completed the mean SF-36-PFS at 12 months, and whilst further improvement was observed, the difference between the study groups remained consistent with chance.

The two study groups showed similar changes on most of the secondary outcome measures: Chalder Fatigue, Hospital Anxiety and Depression Scale: Depression, proportion of full-time school attended, a visual analogue pain scale, participant-rated change and accelerometer measured physical activity, whether at the 6-month or 12-month assessment.

There was an isolated finding of some evidence of an improvement in anxiety in those allocated to GET, as measured by the Hospital Anxiety and Depression Scale at 6 months, with the 12-month assessment, and the Spence Children’s Anxiety scale being aligned with that finding. There was weak evidence of a greater risk of deterioration with GET (27%) than with AM (17%; p = 0.069).

At conventional UK cost per QALY thresholds, the probability that GET is more cost-effective than AM ranged from 18 to 21%. Whilst completion of the SF-36-PFS, Chalder Fatigue Scale and EQ-5D-Y was good at the 6-month assessment point, it was less satisfactory for other measures, and for all measures at the 12-month assessment.

Conclusion: There was no evidence that GET was more effective or cost-effective than AM in this setting, with very limited improvement in either study group evident by the 6-month or 12-month assessment points.

Trial registration: The study protocol was registered at www.isrctn.com (3rd September 2015; ISRCTN 23962803) before the start of enrolment to the initial feasibility phase.

Source: Gaunt DM, Brigden A, Harris SRS, Hollingworth W, Jago R, Solomon-Moore E, Beasant L, Mills N, Sinai P, Crawley E, Metcalfe C. Graded exercise therapy compared to activity management for paediatric chronic fatigue syndrome/myalgic encephalomyelitis: pragmatic randomized controlled trial. Eur J Pediatr. 2024 Mar 2. doi: 10.1007/s00431-024-05458-x. Epub ahead of print. PMID: 38429546. https://link.springer.com/article/10.1007/s00431-024-05458-x (Full text)

Investigating the factors associated with meaningful improvement on the SF-36-PFS and exploring the appropriateness of this measure for young people with ME/CFS accessing an NHS specialist service: a prospective cohort study

Abstract:

Objectives: Paediatric myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is relatively common and disabling, but little is known about the factors associated with outcome. We aimed to describe the number and characteristics of young people reaching the 10-point minimal clinically important difference (MCID) of SF-36-Physical Function Subscale (SF-36-PFS), and to investigate factors associated with reaching the MCID.

Design: Prospective observational cohort.

Setting: A specialist UK National Health Service (NHS) ME/CFS service, Southwest England. Recruitment between March 2014 and August 2015.

Participants: 193 eligible patients with ME/CFS aged 8 to 17 years reported baseline data. 124 (65%) and 121 (63%) with outcome data at six- and 12-months, respectively.

Outcome measures: SF-36-PFS (primary outcome). Chalder Fatigue Questionnaire, school attendance, visual analogue pain scale, Hospital Anxiety and Depression Scale, Spence Young people Anxiety Scale, Clinical Global Impression scale, and EQ-5D-Y (secondary)

Results: At six-months 48/120 (40%) had reached the MCID for SF-36-PFS. This had increased to 63/117 (54%) at 12-months. On the CGI, 77% and 79% reported feeling either a little better, much better, or very much better. Those with worse SF-36-PFS at baseline assessment were more likely to achieve the MCID for SF-36-PFS at six-months (OR 0.97, 95% CI 0.96 to 0.99, p-value 0.003), but there was no evidence of effect at 12-months (OR 0.98, 95% CI 0.97 to 1.00, p-value 0.038). No other factors at baseline were associated with the odds of reaching the MCID at six-months. However, at 12-months there was strong evidence of an effect of pain on MCID (OR 0.97, 95% CI 0.95 to 0.99, p-value 0.001), and SF-36-PFS on MCID (OR 0.96, 95% CI 0.94 to 0.98, p-value 0.001).

Conclusions: 40% and 54% of young people reached the MCID at 6 and 12 months respectively. No factors at assessment (other than SF-36-PFS at six-months, and pain and SF-36-PFS at 12-months) are associated with MCID of SF-36-PFS at either six-, or 12- months. Further work is needed to explore the most appropriate outcome measure for capturing clinical meaningful improvement for young people with ME/CFS.

Source: Gaunt, D. M., Brigden, A. L. C., Metcalfe, C., Loades, M., & Crawley, E. M. (Accepted/In press). Investigating the factors associated with meaningful improvement on the SF-36-PFS and exploring the appropriateness of this measure for young people with ME/CFS accessing an NHS specialist service: a prospective cohort study. BMJ Open. https://research-information.bris.ac.uk/en/publications/investigating-the-factors-associated-with-meaningful-improvement- 

Severe myalgic encephalomyelitis/chronic fatigue syndrome in children and young people: a British Paediatric Surveillance Unit study

Abstract:

Objectives: Primary objective: to determine the point prevalence and incidence rate of severe myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in children aged 5-16 years over 13 months.

Secondary objectives: to describe the demographic features, symptoms, impact on activities of daily living, school attendance and time to diagnosis.

Design: Prospective surveillance study conducted by the British Paediatric Surveillance Unit. Paediatricians was asked if they had assessed a child with severe ME/CFS (screening definition for prevalence and incidence: children (5-16 years) diagnosed with ME/CFS so severe that they are unable to attend school for more than 1 hour a week during the last 6 weeks of the school term).

Participants: Patients 5-16 years of age, seen by paediatricians and two large ME/CFS specialist services across the UK and Ireland.

Outcome measures: Paediatrician-completed questionnaires describing demographics, symptoms, function and treatment, (applying National Institute for Health and Care Excellence (NICE)-recommended criteria to assess severity of ME/CFS). Diagnosis of severe, probable severe or possible severe ME/CFS was made only with evidence of NICE-recommended screening blood tests.

Results: 285 cases were reported, of which of which 33 were severe, 4 probable severe and 55 possible severe. Estimated prevalence was 3.2 per million children (95% CI 2.2 to 4.5). Including possible/probable severe ME/CFS gave 8.9 per million children (95% CI 7.2 to 11). The incidence rate was 0.90 per million children-years (95% CI 0.43 to 1.65) (1.97 per million children-years (95% CI 1.24 to 2.99)). Median age was 13 years and 58% of cases were female. Median time to diagnosis was 0.47 years.

Conclusions: Although the incidence of children presenting with severe ME/CFS is low, all were very disabled. In addition, the majority receive little or no education. Paediatricians need to consider how to provide rehabilitation and education for these disabled young people.

Source: Royston AP, Rai M, Brigden A, Burge S, Segal TY, Crawley EM. Severe myalgic encephalomyelitis/chronic fatigue syndrome in children and young people: a British Paediatric Surveillance Unit study. Arch Dis Child. 2022 Dec 1:archdischild-2022-324319. doi: 10.1136/archdischild-2022-324319. Epub ahead of print. PMID: 36456114. https://adc.bmj.com/content/early/2022/11/30/archdischild-2022-324319 (Full text)

Experiences of pain in paediatric chronic fatigue syndrome/myalgic encephalomyelitis: a single-centre qualitative study

Abstract:

Background: Moderate to severe pain affects up to two-thirds of children with chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) and is associated with worse fatigue and physical functioning. This research aims to gain a greater insight into pain experienced by these children.

Methods: Thematic analysis of qualitative data from semistructured interviews with 13 children with CFS/ME (mean age=15.3 years, 67% female) was completed.

Results: Thematic analysis enabled construction of three themes: children’s wide-ranging experiences of pain, negative impact of pain and lack of effective treatment for pain and nine subthemes. The first theme demonstrated highly varied pain experiences, ranging from ‘like [being]… on fire’, like ‘being stabbed’ to ‘like…lead’. Children experienced pain in multiple sites and with wide-ranging frequency and severity. The second theme highlighted the profound negative impact of pain on multiple aspects of children’s lives. Physical activity was severely impaired; some children ‘couldn’t leave bed’ or ‘couldn’t…brush [their] own hair’. Abdominal pain meant some would ‘go…days without eating’. Pain substantially impacted on mental health, leaving children feeling ‘agitated’, experiencing ‘really bad panic attacks’ or making them ‘[want to] breakdown’. Children felt they ‘can’t do the things that everyone else can do’, had ‘missed out’ and are ‘behind everyone’. Some avoided socialising as they ‘don’t want to stop everyone else’. The final theme demonstrates the absence of adequate treatment for pain, with participants reporting ‘nothing has ever really got rid of it’ and only ‘slightly [takes] the edge off’ and other experiencing side effects.

Conclusions: Pain in paediatric CFS/ME is highly variable, common and often results in severe physical limitation and poor mental health. Effective treatments for pain represent an unmet need.

Source: Serafimova T, Ascough C, Parslow RM, Crawley E. Experiences of pain in paediatric chronic fatigue syndrome/myalgic encephalomyelitis: a single-centre qualitative study. BMJ Paediatr Open. 2022 Feb;6(1):e001201. doi: 10.1136/bmjpo-2021-001201. Epub 2022 Feb 15. PMID: 36053633. https://bmjpaedsopen.bmj.com/content/6/1/e001201 (Full text)

The importance of school in the management of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS): issues identified by adolescents and their families

Abstract:

Paediatric Myalgic Encephalomyelitis (ME)/Chronic Fatigue Syndrome (CFS) is a disabling condition. Schools play a key role in adolescents’ experiences with managing ME/CFS. However, little is known about the experiences of adolescents with ME/CFS (and their families) in schools.

This paper is an incidental qualitative study, which combines data from two independent ME/CFS studies: study 1 researched ethnic minority adolescents with ME/CFS; study 2 explored Acceptance and Commitment Therapy for adolescents with ME/CFS who had not recovered after one year. Participants included: adolescents with ME/CFS; their families; and medical professionals (ME/CFS specialists and non-specialists). Adolescents, their families, and ME/CFS medical professionals were recruited from a UK specialist paediatric ME/CFS service. Non-ME/CFS medical professionals were recruited from the same region.

Semi-structured qualitative interviews and focus groups were undertaken. Participants’ views on schools from each study were combined and thematic analysis was used to identify themes. Fifteen adolescents with ME/CFS (11-17 years old), sixteen family members, and ten medical professionals (GPs, school nurses and ME/CFS specialists) were interviewed.

Four key themes were found: (1) adolescents identified school was important for aiding ME/CFS recovery, especially educationally and socially; (2) families described varying levels of support from schools and local authorities with help managing ME/CFS – some described significant practical and emotional difficulties to accessing education, whereas others recounted examples of positive supportive strategies, particularly when teachers had previous experience or knowledge of ME/CFS; (3) parents thought three-way communication between schools, healthcare and families could improve support; (4) participants felt schools were an appropriate place for knowledge building and raising awareness of ME/CFS amongst teachers and pupils, to aid improved supportive measures.

In conclusion, this paper provides rich data that highlights the importance of education and the realistic fears and hurdles for adolescents with ME/CFS remaining engaged in education and the impact on their future. Some families described positive strategies in school, which were viewed as helpful to manage ME/CFS in the classroom. These strategies could be implemented alongside knowledge building initiatives and improved communication between healthcare and education. There is a need to further investigate useful strategies and determine how teachers can be best supported in implementing them.

Source: Clery P, Linney C, Parslow R, Starbuck J, Laffan A, Leveret J, Crawley E. The importance of school in the management of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS): issues identified by adolescents and their families. Health Soc Care Community. 2022 Aug 22. doi: 10.1111/hsc.13942. Epub ahead of print. PMID: 35996850. https://onlinelibrary.wiley.com/doi/10.1111/hsc.13942 (Full text)

What treatments work for anxiety and depression in children and adolescents with chronic fatigue syndrome? An updated systematic review

Abstract:

Objectives: Children with chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) experience a higher prevalence of depression and anxiety compared with age-matched controls. Our previous systematic reviews in 2015/16 found little evidence for effective treatment for children with CFS/ME with comorbid depression and/or anxiety. This review updates these findings.

Design: A systematic review. We searched Cochrane library, Medline, Embase and PsycINFO databases from 2015 to 2020. We combined the updated results with our previous reviews in a narrative synthesis.

Participants: Inclusion criteria: <18 years old; diagnosed with CFS/ME (using Centers for Disease Control and Prevention, National Institute for Health and Care Excellence or Oxford criteria); validated measures of depression and/or anxiety.

Interventions: Observational studies or randomised controlled trials.

Comparison: Any or none.

Outcomes: Studies with outcome measures of anxiety, depression or fatigue.

Results: The updated review identified two studies. This brings the total number of paediatric CFS/ME studies with a measure of anxiety and/or depression since 1991 to 16. None of the studies specifically targeted depression, nor anxiety. One new study showed the Lightning Process (in addition to specialist care) was more effective at reducing depressive and anxiety symptoms compared with specialist care alone. Previous studies evaluated cognitive-behavioural therapy (CBT); pharmacological interventions and behavioural approaches. CBT-type interventions had most evidence for improving comorbid anxiety and/or depressive symptoms but varied in delivery and modality. Other interventions showed promise but studies were small and have not been replicated.

Conclusion: Very few paediatric CFS/ME intervention studies have been conducted. This review update does not significantly add to what is known from previous reviews. The evidence is of poor quality and insufficient to conclude which interventions are effective at treating comorbid anxiety and/or depression in paediatric CFS/ME.

Source: Clery P, Royston A, Driver K, Bailey J, Crawley E, Loades M. What treatments work for anxiety and depression in children and adolescents with chronic fatigue syndrome? An updated systematic review. BMJ Open. 2022 Jan 31;12(1):e051358. doi: 10.1136/bmjopen-2021-051358. PMID: 35105619. https://pubmed.ncbi.nlm.nih.gov/35105619/

What treatments work for anxiety and depression in children and adolescents with Chronic Fatigue Syndrome? An updated systematic review

Abstract:

Objectives: Children with Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME) experience a higher prevalence of depression and anxiety compared to age-matched controls. Our previous systematic reviews in 2015/16 found little evidence for effective treatment for children with CFS/ME with comorbid depression and/or anxiety. This review updates these findings.

Design: A systematic review. We searched Cochrane library, Medline, Embase and PsychINFO databases from 2015-2020. We combined the updated results with our previous reviews in a narrative synthesis.

Participants: Inclusion criteria: <18 years old; diagnosed with CFS/ME (using Centre for Disease Control, National Institute for Health and Care Excellence, or Oxford criteria); validated measures of depression and/or anxiety.

Interventions: Observational studies or randomised controlled trials.

ComparisonAny or none.

Outcomes: Studies with outcome measures of anxiety, depression, or fatigue.

Results: The updated review identified two studies. This brings the total number of paediatric CFS/ME studies with a measure of anxiety and/or depression since 1991 to 16. None of the studies specifically targeted depression, nor anxiety. One new study showed the Lightning Process (in addition to specialist care) was more effective at reducing depressive and anxiety symptoms compared to specialist care alone. Previous studies evaluated cognitive behavioural therapy (CBT); pharmacological interventions; and behavioural approaches. CBT-type interventions had most evidence for improving comorbid anxiety and/or depressive symptoms but varied in delivery and modality. Other interventions showed promise but studies were small and have not been replicated.

Conclusion: Very few paediatric CFS/ME intervention studies have been conducted. This review update does not significantly add to what is known from previous reviews. The evidence is of poor quality and insufficient to conclude which interventions are effective at treating comorbid anxiety and/or depression in paediatric CFS/ME.

Source:Clery, P., Royston , A., Driver, K., Bailey, J., Crawley, E. M., & Loades, M. (Accepted/In press). What treatments work for anxiety and depression in children and adolescents with Chronic Fatigue Syndrome? An updated systematic review. BMJ Open. https://research-information.bris.ac.uk/en/publications/what-treatments-work-for-anxiety-and-depression-in-children-and-a

Exploring anhedonia in adolescents with Chronic Fatigue Syndrome (CFS): A mixed-methods study

Abstract:

Background: Chronic Fatigue Syndrome (CFS/ME) may get in the way of enjoying activities. A substantial minority of adolescents with CFS/ME are depressed. Anhedonia is a core symptom of depression. Anhedonia in adolescents with CFS/ME has not been previously investigated.

Method: One hundred and sixty-four adolescents, age 12 to 18, with CFS/ME completed a diagnostic interview (K-SADS) and questionnaires (HADS, RCADS). We used a mixed-methods approach to explore the experience of anhedonia and examine how common it is, comparing those with clinically significant anhedonia to those without.

Results: Forty-two percent of adolescents with CFS/ME reported subclinical or clinical levels of anhedonia. Fifteen percent had clinically significant anhedonia. Thematic analysis generated two themes: (1) stopping activities that they previously enjoyed and (2) CFS/ME obstructs enjoyment. Most (72%) of those who reported clinically significant anhedonia met the depression diagnostic criteria. Those who were depressed used more negative language to describe their experience of activities than in those who were not depressed, although the themes were broadly similar.

Conclusions: Experiencing pleasure from activities may be affected in CFS/ME, particularly in those who are depressed. Anhedonia may get in the way of behavioural strategies used within CFS/ME treatments.

Source: Smith L, Crawley E, Riley M, McManus M, Loades ME. Exploring anhedonia in adolescents with Chronic Fatigue Syndrome (CFS): A mixed-methods study. Clin Child Psychol Psychiatry. 2021 Apr 16:13591045211005515. doi: 10.1177/13591045211005515. Epub ahead of print. PMID: 33863235. https://pubmed.ncbi.nlm.nih.gov/33863235/

Recovery from chronic fatigue syndrome: a systematic review-heterogeneity of definition limits study comparison

Abstract:

Background: Paediatric chronic fatigue syndrome or myalgic encephalomyelitis (CFS/ME) is a common illness with a major impact on quality of life. Recovery is poorly understood. Our aim was to describe definitions of recovery in paediatric CFS/ME, the rate of recovery and the time to recovery.

Methods: This systematic review included a detailed search of MEDLINE, EMBASE, PsycInfo and Cochrane Library between 1994 and July 2018. Inclusion criteria were (1) clinical trials and observational studies, (2) participants aged <19 years with CFS/ME, (3) conducted in Western Healthcare systems and (4) studies including a measure of recovery and time taken to recover.

Results: Twelve papers (10 studies) were identified, involving 826 patients (range 23-135). Recovery rates were highly varied, ranging between 4.5% and 83%.Eleven distinct definitions of recovery were used; six were composite outcomes while five used unidimensional outcomes. Outcome measures used to define recovery were highly heterogeneous. School attendance (n=8), fatigue (n=6) and physical functioning (n=4) were the most common outcomes included in definition of recovery. Only five definitions included a personal measure of recovery.

Implications: Definitions of recovery are highly variable, likely secondary to differences in study design, outcomes used, follow-up and study populations. Heterogeneous definitions of recovery limit meaningful comparison between studies, highlighting the need for a consensus definition going forward. Recovery is probably best defined from the child’s own perspective with a single self-reported measure. If composite measures are used for research, there should be agreement on the core outcome set used.

Source: Moore Y, Serafimova T, Anderson N, King H, Richards A, Brigden A, Sinai P, Higgins J, Ascough C, Clery P, Crawley EM. Recovery from chronic fatigue syndrome: a systematic review-heterogeneity of definition limits study comparison. Arch Dis Child. 2021 Apr 12:archdischild-2020-320196. doi: 10.1136/archdischild-2020-320196. Epub ahead of print. PMID: 33846138. https://pubmed.ncbi.nlm.nih.gov/33846138/

Cost-effectiveness of Interventions for Chronic Fatigue Syndrome or Myalgic Encephalomyelitis: A Systematic Review of Economic Evaluations

Abstract:

Introduction: Chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) has profound quality of life and economic consequences for individuals, their family, formal services and wider society. Little is known about which therapeutic interventions are more cost-effective.

Objective: A systematic review was carried out to identify and critically appraise the evidence on the cost-effectiveness of CFS/ME interventions.

Methods: The review protocol was prespecified (PROSPERO: CRD42018118731). Searches were carried out across two databases-MEDLINE (1946-2020) and EMBASE (1974-2020). Additional studies were identified by searching reference lists. Only peer-reviewed journal articles of full economic evaluations examining CFS/ME interventions were included. Trial- and/or model-based economic evaluations were eligible. Data extraction and screening were carried out independently by two reviewers. The methodological quality of the economic evaluation and trial were assessed using the Consensus Health Economic Criteria checklist (CHEC-list) and Risk of Bias-2 (RoB-2) tool, respectively. A narrative synthesis was used to summarise the economic evidence for interventions for adults and children in primary and secondary care settings.

Results: Ten economic evaluations, all based on data derived from randomised controlled trials, met our eligibility criteria. Cognitive behavioural therapy (CBT) was evaluated across five studies, making it the most commonly evaluated intervention. There was evidence from three trials to support CBT as a cost-effective treatment option for adults; however, findings on CBT were not uniform, suggesting that cost-effectiveness may be context-specific. A wide array of other interventions were evaluated in adults, including limited evidence from two trials supporting the cost effectiveness of graded exercise therapy (GET). Just one study assessed intervention options for children. Our review highlighted the importance of informal care costs and productivity losses in the evaluation of CFS/ME interventions.

Conclusions: We identified a limited patchwork of evidence on the cost-effectiveness of interventions for CFS/ME. Evidence supports CBT as a cost-effective treatment option for adults; however, cost-effectiveness may depend on the duration and frequency of sessions. Limited evidence supports the cost effectiveness of GET. Key weaknesses in the literature included small sample sizes and short duration of follow-up. Further research is needed on pharmacological interventions and therapies for children.

Source: Cochrane M, Mitchell E, Hollingworth W, Crawley E, Trépel D. Cost-effectiveness of Interventions for Chronic Fatigue Syndrome or Myalgic Encephalomyelitis: A Systematic Review of Economic Evaluations. Appl Health Econ Health Policy. 2021 Mar 1:1–14. doi: 10.1007/s40258-021-00635-7. Epub ahead of print. PMID: 33646528; PMCID: PMC7917957. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7917957/ (Full text)