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zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
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@zeynep

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zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

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    1. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      Whether you're pro- or anti- masks (I'm neither), it is important we assess any downsides & investigate ways these could be mitigated. We recently reviewed 37 studies on this which I'll summarise; preprint here ->https://www.medrxiv.org/content/10.1101/2020.06.16.20133207v1 …

      7 replies 66 retweets 113 likes
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    2. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      1. Adherence to face mask - in 8 trials that measured it was modest (average 47% more wearing in face mask group); but appeared similar in combined face mask + handwashing group (so no "risk compensation" - for which we found no other studies). Adherence decreased with time.pic.twitter.com/25BqM1mcLw

      1 reply 4 retweets 13 likes
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    3. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      2. Adherence was worse for N95 than surgical masks. This illustrates need to consider & measure discomforts (which is one possible explanation for why N95s appear no better than surgical masks in 4 RCTs of preventing flu, eg Radonovich 2019 ).pic.twitter.com/F2Mtd97gKh

      1 reply 4 retweets 11 likes
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    4. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      3. Commonest complaints were the discomfort, especially restricted breathing & facial. Communication was also a common problem - and a reason to discontinue use (mitigations might be face shield or transparent masks). Note special problem for lip readers.pic.twitter.com/Dpk8lwXfRZ

      1 reply 4 retweets 14 likes
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    5. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      4. Mitigation could be gained thru (1) limiting situations or duration of mask wearing or (2) alternatives such as transparent masks or face shields. Education appeared to have little impact.pic.twitter.com/7yXdKiIw35

      2 replies 5 retweets 14 likes
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    6. Paul Glasziou‏ @PaulGlasziou 25 Jun 2020

      5. No head-to-head studies exist of masks versus face shields. Such trials seem urgent & important but, as well as prevention of viral transmission, should measure adherence and downsides. https://www.ijidonline.com/article/S1201-9712(20)30399-4/fulltext …

      3 replies 12 retweets 28 likes
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      zeynep tufekci‏Verified account @zeynep 26 Jun 2020
      Replying to @PaulGlasziou

      Thank you for this! I know we have very little studies that relate directly to the current moment but this is great to have all in one place. I know such reviews can be a lot of work.

      11:01 AM - 26 Jun 2020
      0 replies 0 retweets 0 likes

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