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  1. ME/CFS Science Blog

    CDC Data Brief: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome in Adults: United States, 2021–2022, 2023, Vahratian, Unger et al

    Noticed that the data of these NHIS surveys is open-access and available here: https://www.cdc.gov/nchs/nhis/data-questionnaires-documentation.htm Had a quick look at the most recent data from 2023 (more recent than the Unger paper posted here). Summary 2023 NHIS survey 29522 adults...
  2. ME/CFS Science Blog

    News from The Netherlands

    The 14 projects funded by the ZonMw Long Covid program in the Netherlands has been published. It looks quite impressive. The total budget has been increased from 6 to 11.4 miljoen euros. https://www.zonmw.nl/nl/nieuws/honorering-van-projecten-biomedische-en-klinische-rondes-post-covid
  3. ME/CFS Science Blog

    Comparison of [CBT] versus activity management, both delivered remotely, to treat paediatric [CFS/ME]: the UK FITNET-NHS RCT 2024 Metcalfe et al

    On page 41, the document itself says 61 treatment withdrawals for FITNET compared to 12 for AM. Not sure what the difference with the flow chart comes from.
  4. ME/CFS Science Blog

    Comparison of [CBT] versus activity management, both delivered remotely, to treat paediatric [CFS/ME]: the UK FITNET-NHS RCT 2024 Metcalfe et al

    These look like the main results. The Clinical Global Improvement Score and quality of life (EQ-5D-Y) are not shown but also showed no significant differences. The only results that point to a consistent effect is (self-reported) school attendance which was about 12% higher in the FITNET group.
  5. ME/CFS Science Blog

    Comparison of [CBT] versus activity management, both delivered remotely, to treat paediatric [CFS/ME]: the UK FITNET-NHS RCT 2024 Metcalfe et al

    Another remarkable figure that does not receive a lot of attention in the abstract: the percentage of patients completing 80% or more of expected modules/sessions was 78% in the Activity Management control group but only 37.4% of the intervention group.
  6. ME/CFS Science Blog

    Comparison of [CBT] versus activity management, both delivered remotely, to treat paediatric [CFS/ME]: the UK FITNET-NHS RCT 2024 Metcalfe et al

    They define the control treatment as if it was similar to pacing: But it seems more like graded exercise therapy (GET):
  7. ME/CFS Science Blog

    Comparison of [CBT] versus activity management, both delivered remotely, to treat paediatric [CFS/ME]: the UK FITNET-NHS RCT 2024 Metcalfe et al

    Haven't read the report yet but the research team of Crawley defined the minimal clinically important difference for this scale to be 10 points. So that would suggest that the effect they found was too small to be clinically significant. It also seems that it decreased to 4.4 points at the 12...
  8. ME/CFS Science Blog

    Cognitive assessment in ME/CFS: a cognitive substudy of the multi-site clinical assessment of ME/CFS (MCAM), 2024, Lange, Unger +

    Traditional Neuropsychological Tests The following two traditional neuropsychological tests were used and took about 10 minutes to be completed. Test of Premorbid Functioning (TOPF (Pearson, 2009): The TOPF requires participants to read a list of 70 phonetically irregular words. The ability to...
  9. ME/CFS Science Blog

    Cognitive assessment in ME/CFS: a cognitive substudy of the multi-site clinical assessment of ME/CFS (MCAM), 2024, Lange, Unger +

    A description of the tasks is available in the supplementary material. Except for the maze (GML) they seem rather easy tasks focusing on detection and memory. CogState Brief Screening Battery (CBSB) Detection Task (DET): Task stimuli are images of playing cards showing either red or black...
  10. ME/CFS Science Blog

    Cognitive assessment in ME/CFS: a cognitive substudy of the multi-site clinical assessment of ME/CFS (MCAM), 2024, Lange, Unger +

    So accuracy showed no difference but performance speed does. Exercise had no further impact on cognitive functioning. Here's quote from the discussion section that summarizes the findings:
  11. ME/CFS Science Blog

    Two-Day Cardiopulmonary Exercise Testing in Long COVID Post-Exertional Malaise Diagnosis, 2024, Gattoni

    Seems like you're right. When looking into this, I tried to calculate the minimum effect size d (mean_difference/sd_baseline) that could be statistically significant (p = 0.05) given the sample size n = 15. To get an easy approximation, I assumed sd_baseline = sd_post = 1 and the sd of the...
  12. ME/CFS Science Blog

    Two-Day Cardiopulmonary Exercise Testing in Long COVID Post-Exertional Malaise Diagnosis, 2024, Gattoni

    VO2_peak (19.43 on day 1 versus 19.67 on day 2) and workload_peak (36 on day 1 versus 36 on day 2) did not change at all. At the gas exchange threshold (GET), VO2 declined from 1.09 to 1.06 (in absolute numbers) corresponding to a cohen's d of 0.318. Workload at GET does not seem to be reported.
  13. ME/CFS Science Blog

    Postacute Sequelae of SARS-CoV-2 Infection in the Pre-Delta, Delta, and Omicron Eras, 2024, Ziyad Al-Aly, M.D et al

    The cumulative DALY impact for fatigue seems rather low compared to other outcomes:
  14. ME/CFS Science Blog

    Cardiopulmonary and metabolic responses during a 2-day CPET in [ME/CFS]: translating reduced oxygen consumption [...], Keller et al, 2024

    Interesting. I was curious to know how it worked so had a look at the code: https://github.com/kosukeimai/MatchIt/blob/master/R/matchit.R It's a far too complex for me but if I understand the gist of it, the default is to use logistic regression, calculate predicted values and then find the...
  15. ME/CFS Science Blog

    News from Austria and Switzerland

    This looks like a very successful grant round at the university of Vienna: The WWT and WE&ME Foundation provided funding for a call on Understanding ME/CFS of maximal 100.000 euros in funding per project. They received 13 applications and 7 were funded. These include research on severe ME...
  16. ME/CFS Science Blog

    Genetic variants associated with chronic fatigue syndrome predict population-level fatigue severity and actigraphic measurements, 2024, Liu et al.

    The conclusion of the paper writes: Which I found rather confusing because the content of their paper suggest rather the opposite. Of 30 single nucleotide variants (SNVs) previously associated with CFS, only one was associated with subjective fatigue severity in the control group. The authors...
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