I have a new article in the New York Times discussing lack of randomized trials for masks for source-control for COVID. In my newsletter, I discuss what this debate/debacle reveals, not just about COVID denialism, but also about our public health response.https://zeynep.substack.com/p/on-randomized-trials-and-medicine …
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Thank you as always for your analysis. And really, really thank you for that RCT/mask article. It has been eminently useful in swatting down those who insist on RCT's before donning a mask.
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Also, some people may have been infected inside their households. Wife participated, but not me, so I could perceivably have infected her, that would drag down efficiency as well since we know many infections happen in the household.
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This would also be difficult to detect giv en that the bulk of transmission is asymtomatic.
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Thanks for this... really difficult to find decent write ups that are not seeming to sell an agenda
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I agree that it does not measure source control. However, does it present a realistic picture of the outcome of recommending masks to a population?
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2/. The N95 filters 95% of particles, including near-range covid aerosols. They protect the user. The industrial versions reduce leakage. Let’s face it: protect yourself! Covid will be life threatening for at least 18 months. Time to get 500 million masks.
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Underpowered to find a ridiculously small effect, you mean. Vaccines data this week reflect 100 total events on a 30000 sample size (90 on a group vs 5 on the other) and nobody claimed to be underpowered...
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@threadreaderapp please unroll, thanks!Thanks. Twitter will use this to make your timeline better. UndoUndo
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