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Cochrane review has many flaws

https://www.cidrap.umn.edu/covid-19/commentary-wear-respirat...

People wear N95s to protect against COVID transmission because they work. Yet every time the topic comes up online, someone is always quick to reach for the flawed Cochrane review.




Again, for an n=1 case of a medical professional doing it in a diligent fashion they probably do work.

In gen pop with patchy adherence to usage not so much.


For an n=1 case, we can control adherence.




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