Interesting new preprint on #LongCovid. Some take-homes:
- ~14% of people
- can last months
- associated with +symptoms, previous respiratory disease, gender, age
- not associated with metabolic disease (mostly)https://www.medrxiv.org/content/10.1101/2020.10.19.20214494v1 …
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However, some MAJOR limitations to the analysis. The patient group is very selected (people who use and KEEP using an app long term), and this only captures those who had PCR-positive cases of COVID-19
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So, interesting, but I'd be very cautious about drawing inferences from this (i.e. you can't say that 2% of people who get COVID-19 will still have symptoms months later, we don't know if that's true from this study)
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A good way of thinking about it is, I reckon, to say that
#LongCovid does appear to impact a reasonable fraction of people, but exactly who they are is still up in the air and requires much more researchShow this thread -
It's also worth noting that we still don't know how much COVID-19 differs from other respiratory diseases in this context, although this study does seem to indicate that those who tested positive for COVID-19 were more likely to experience long-lasting symptomspic.twitter.com/5w3lgCwpag
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Also, I should note that the fact that this data was gathered through an app is definitely an issue. I've actually published research on attrition in app-based interventions, it's a tricky subject https://www.jmir.org/2020/9/e20283/
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