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Unfortunately, this study uses ICD-10-CM code R53.82, which is for Chronic Fatigue. That probably explains the incidence of 0.2% after 12 months for the "non-covid" controls (tho that just means no positive covid test recorded). Way too high for ME/CFS. Also, they don't check if the chronic...

I think that defining ME/CFS as a syndrome like this is a great idea, and could help research as well as clinical practice. If we are talking PVFS (rather than PVF), I'm not sure if it is different from ME/CFS.Mulitple survey studies find around 2/3 of people with ME/CFS report infectious onset...

I think so. The research results were first described two or three years ago, But it’s single cell RNA sequencing from the right authors and involving a cohort before and after a maximal single exercise test

Does anyone know how this compares with the much larger and probably more rigourous study by Andrew Gelman(?) in the Maureen Hansen group? I seem to remember that one came out with a surprising finding it it was all about monocytes. Sorry, I’ve got a migraine, no chance of link

Thanks. I had the familiar sinking feeling of Realising that I written quite a long and thoughtful post on that thread critiquing the pre-print. It was only last year :-(. But if that was it, it doesn’t amount to much and makes you you wonder where all the hype was coming from. I know...

A couple of years ago, the news from Dr Prusty suggested they were close to a breakthrough based on EBV and mitochondrial fragmentation (the science was beyond me). Does anyone know what happened to that? Much of this sounds like a new venture.

yes, I doubt it was a great diagnostic questionnaire. But to get reliable incidence or prevalence data you need to have robust diagnosis. That means competent doctors above all.

I remember discussing this study, possibly on Phoenix rising, when it came out. Wish I could remember what we concluded! Though from the abstract, the fundamental flaw is that, even though this is part of a prospective cohort, they rely on an email questionnaire for diagnosis. The point about...

I agree that people with ME could come under more pressure (though all the debate and proposed legislation focuses on protections). We also know that too many people with ME choose to take their own lives, including members of this and other ME forums. This is awful. We need societal and...

Thanks for the great analysis, @Hutan, as usual. Like you, I like the idea of traditional medicine helping, but don’t have the energy to read something like this.

Summary of big data studies: sex ratios and percentages Links & Notes Bakken, 2014 National Patient Register (NPR) Valdez, 2019 50m with active insurance, multiple providers, SE USA. Uses ICD-CM 9&10; different from Euro ICD usage Hilland, 2022 NPR, after 2014 national ME/CFS guidelines inc...

I’ve only read the abstract, but it’s conclusion that vigourous physical activity has a modestly protective effect of reducing the risk of major currently heart disease is not exactly earth-shattering. And no other measures of physical activity had an effect. CFS did not have a significant...

To come back to the paper itself, I think what it shows that Is valuable is a kind of biological footprint of the illness – even if you can only see it in a large sample. Although the pre-print says it shows it’s not a psychological illness, I don’t think that will convince doubters without...

Thanks, Veronica, you write so beautifully and evocatively about the experience of ME. And it’s great to have your work out there for others to read and maybe understand a little better

Norwegian Patient Registry studies Bakken: 74% female, ratio 3.2:1, 5,810 G93.3 cases, hospital diagnosis Hilland: 79% female, ratio 3.7:1, 5,560 G93.3 cases, hospital diagnosis These two studies used the same methodology, with Hilland looking at data several years later than Bakken. Both used...

NHS Hospital Episode Statistics Samms & Ponting preprint (thread) 80% Female/3.9:1, 100,000 cases diagnosed with the G93.3 code. This is the biggest study for sex ratios using codes that do not include chronic fatigue. Data quality/diagnosis The dataset reaches back to 1989, but outpatient...

Probably not needed for most people here, but here's a lay summary I wrote for te MEA website. Research: Myalgic Encephalomyelitis is clear to see in the blood

Thanks to @Hutan for splitting off this thread on sex ratios/female predominance. I was going to focus on the other big studies, but wanted to make a few points in response to yours above. I'm glad we agree that the prevalence data (and implied incidence) looks wrong. The question is whether...

These three researchers Have done great work including their recent pan- European patient survey of Oval 11,000 people. Apart from looking at experiences of treatments and getting social care, they also showed The adolescence and midlife age peaks found in the earlier Norwegian study Replicated...

I've reread that paper. It's interesting and has some notable ME authors: Lucinda Bateman, Charles Lapp and Peter Rowe. However, there are issues with the data that cast doubt on the accuracy of diagnosis and so the finding of 59% female (sex ratio 1.4) for ME codes as shown in Table 8. The...