For those who remember, the headlines claiming that there was a relationship were numerous and, it appears, incredibly misleadingpic.twitter.com/6d7Dt5GXp9
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For those who remember, the headlines claiming that there was a relationship were numerous and, it appears, incredibly misleadingpic.twitter.com/6d7Dt5GXp9
Just goes to show how easily bad science can cause serious, long-term beliefs and research investment, and it takes months of effort to even make a dent in terms of correction
For example, this study was rated at very high risk of bias in the review 42,000 accesses, 144 citations per Google Scholar, Altmetric of 1,389pic.twitter.com/JiRea6v4Ke
In comparison, the excellent review by @EpiEllie
1,600 accesses, no citations, Altmetric of 31
That is THE WRONG WAY AROUND
The original paper that brought attention the idea was this one, which is a teaching case for unreliable control groups. https://nejm.org/doi/full/10.1056/NEJMoa2020283 … ICU patients vs. blood donors???
That’s the one that set me off down the rabbit hole of these bad studies too.
Dear @EpiEllie congrats. What a great DAG ! Transparent assumptions.pic.twitter.com/wlKN23P309
As one of those in the supposed ‘higher risk’ blood groups - thanks @EpiEllie !
Which is also included in the @COVID_E_N_D inventory of best evidence syntheses, under public-health measureshttps://www.mcmasterforum.org/networks/covid-end/resources-to-support-decision-makers/Inventory-of-best-evidence-syntheses/public-health-measures …
Oh wow, I didn’t know this! Thanks for sharing!
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