"Masks stop respiratory droplets sometimes!" is a ridiculous exercise in surrogate outcomes
We KNOW that masks are unlikely to prevent community acquired infections. THAT'S what we care about, not some statistics on particulate movement #COVID19
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Because people get mad about anything mask-related, some links to read before you righteously claim that they MUST work https://wwwnc.cdc.gov/eid/article/15/2/08-1167_article …https://www.ncbi.nlm.nih.gov/pubmed/25858901
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Replying to @GidMK
The abstract on that CDC article is: It seems like it is saying they are not useful because people don't wear them consistently. Not that masks don't work.pic.twitter.com/pdEAPOVhFS
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Replying to @GregFromCos
Working is a function of use. If it was a drug that only worked for a small proportion of people in per-protocol analyses, we'd absolutely conclude that it was ineffective
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Replying to @GidMK
But if there were a drug that people just for whatever reason did not want to take 50% of the time we would not conclude the drug was ineffective. We'd look at ways to increase people remembering to take it, like phone app reminders.
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Replying to @GregFromCos
I'm not saying people don't ~want~ to use it, I'm saying in clinical trials people ~don't~ - because of discomfort, perceived value etc - which is a very different argument
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Replying to @GidMK
What would the results have been if they'd tried physical distancing in a home? Would that also have been determined to not be viable because people could not maintain it all the time? Seems to me that pandemic flattening measures would be different than what works in a home.
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Well, there's significant evidence that washing hands and face hygiene can help prevent infections, so who knows? Not many RCTs on distancing tho. Most of it has been tested on seasonal or pandemic influenza, true that this virus is somewhat different
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Replying to @GidMK
By the way, I see that Hand Hygeine has also not been shown to be effective by this same standard, yet we still encourage that. This article talks about that: https://www.npr.org/sections/health-shots/2020/03/31/824560471/should-we-all-be-wearing-masks-in-public-health-experts-revisit-the-question …
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