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People who had severe covid-19 show cognitive decline years later (www.newscientist.com)

submitted 3 months ago by MicroWave@lemmy.world to c/health@lemmy.world

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An analysis of people who were hospitalised with covid-19 in the first wave of the pandemic has revealed that the ongoing decline in their cognitive abilities is the equivalent to losing 10 IQ points

The cognitive abilities of people who were hospitalised with covid-19 during the first wave of the pandemic remain lower than expected, even years later, and there is some evidence that this is forcing them to change jobs.

“What we found is that the average cognitive deficit was equivalent to 10 IQ points, based on what would be expected for their age, et cetera,” says Maxime Taquet at the University of Oxford.

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[–] Darrell_Winfield@lemmy.world 23 points 3 months ago (1 children)

The tag line on this with regards to IQ is very misleading. Setting aside that IQ is a terrible form of measurement and no weight should be given to it, the study actually reveals that measured IQ is unchanged. They measured after discharge, and then several years later with no change. With no pre-covid measurement, this is a more than useless bit of data.

Depression and anxiety are increased, but so did that of the general population. So hard to tie any of that to COVID or long COVID.

[–] CleoTheWizard@lemmy.world 2 points 3 months ago (1 children)

IQ tests seem like they would actually be useful here though had they done pre-Covid tests and at least a couple of them. I’m not an expert but it seems like the thing they’re bad at is quantifying in specific amounts the intelligence of a person.

For instance, we can’t say that if someone’s IQ went from 100 down to 80 that they became 20% less intelligent. But we can maybe say that this suggests that they lost some cognitive ability and then we can characterize that against a population without long Covid. And again we couldn’t say they’re 20% worse than someone without long Covid, but we certainly know that losing 20 points on an IQ test isn’t normal.

[–] JackbyDev@programming.dev 2 points 3 months ago

Losing 20 points of IQ is massive. That's two standard deviations worth. It's going from average to bottom of the barrel.