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GidMK's profile
Health Nerd
Health Nerd
Health Nerd
Verified account
@GidMK

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Health NerdVerified account

@GidMK

Epidemiologist. Writer (Guardian, Observer etc). "Well known research trouble-maker". PhDing at @UoW Host of @senscipod Email gidmk.healthnerd@gmail.com he/him

Sydney, New South Wales
theguardian.com/profile/gideon…
Joined November 2015

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    1. Dr Paul Mackey‏ @auscandoc 23 Jul 2020

      Dr Paul Mackey Retweeted Betsy Lehman Center

      “Universal masking at MGB was associated with a significantly lower rate of #SARSCoV2 positivity among HCWs.” They do acknowledge potential confounders but this would appear to be “smart-masking” @jvipondmd @TheSGEM @DrPieterPeach @drvyom @GidMK ?https://twitter.com/BetsyLehmanCtr/status/1286322847141564416 …

      Dr Paul Mackey added,

      Betsy Lehman Center @BetsyLehmanCtr
      Researchers at @MassGenBrigham showed that an infection control effort that included mask-wearing for all health care workers and patients in hospitals was associated with lower rates of coronavirus infections. https://jamanetwork.com/journals/jama/fullarticle/2768533 … via @JAMA_current pic.twitter.com/s94XKnkQO1
      4 replies 0 retweets 2 likes
    2. Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @auscandoc @jvipondmd and

      It's a terrible study, many obvious counterpoints. For one, the infection numbers across the whole state almost perfectly match that graph, so you can't attribute any differences to masks

      2 replies 0 retweets 5 likes
    3. Ken Milne MD‏ @TheSGEM 23 Jul 2020
      Replying to @GidMK @auscandoc and

      I would not say it is a terrible study. It is an observational study with known limitations. The authors appropriately stated this in the title (Association) and were very reasonable and cautious in their interpretation. They did not over-state the evidence.pic.twitter.com/tm3dqQsNR8

      1 reply 0 retweets 1 like
    4. Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @TheSGEM @auscandoc and

      Nah it's very silly. The statistical analyses are intrinsically flawed, the confounding pretty atrocious, and there are basic checks that would disprove the hypothesis that were not performed.

      2 replies 0 retweets 0 likes
    5. Ken Milne MD‏ @TheSGEM 23 Jul 2020
      Replying to @GidMK @auscandoc and

      I wouldnt uses "silly" (derogatory) - Accurately said association - Used "may" which could be substituted with may not & be just as correct - Recognized confounders - Used "suggest" I've seen such over-interpreted COVID literature and they were measuredhttps://www.merriam-webster.com/dictionary/silly …

      1 reply 0 retweets 0 likes
    6. Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @TheSGEM @auscandoc and

      Well, we're on twitter so I'm a bit informal If you want a more pedantic answer, the statistical analyses appear unjustified, are under-reported (R^2?) , and thus the results may be entirely spurious. The confounding, which is briefly discussed, is not just a limitation

      2 replies 0 retweets 0 likes
    7. Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @GidMK @TheSGEM and

      But is an intrinsic flaw in the study design. Pre/post studies, by design, are challenging to infer causality from, and while there are observational designs that could have supported the statements made by the authors, this is not one of them. It is probably not appropriate

      1 reply 0 retweets 1 like
    8. Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @GidMK @TheSGEM and

      To even use the word "association" given that no effort was made to quantify the strength of that association in the paper. Moreover, given the obvious outliers, it appears likely that moving the analysis slightly would entirely change the results, which raises the possibility

      2 replies 0 retweets 1 like
      Health Nerd‏Verified account @GidMK 23 Jul 2020
      Replying to @GidMK @TheSGEM and

      That the observed rates are simply an artifact of chance. On top of this, we have substantial issues with the methodology - mask mandates, as has been observed in many places, do not always correlate well with actual mask-wearing behaviour

      3:27 PM - 23 Jul 2020
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Health Nerd‏Verified account @GidMK 23 Jul 2020
          Replying to @GidMK @TheSGEM and

          People may have started using masks before the mandate, or may not have started using them until some time after. Without any attempt to investigate this, we are left with no possible way to conclude that there is any relationship between mask-wearing and infections

          1 reply 0 retweets 0 likes
        3. Health Nerd‏Verified account @GidMK 23 Jul 2020
          Replying to @GidMK @TheSGEM and

          On top of all of this, we have some evidence that the rates within the hospital simply mirrored the rates seen elsewhere in the state/city. This would seem to imply that, in fact, mask wearing had no impact on infections

          0 replies 0 retweets 1 like
        4. End of conversation

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