Randomized trial suggesting mask use does not protect the wearer from Covid-19 sparks controversy
20 Nov, 2020 | 08:48h | UTCEditorials: Of Masks and Methods AND The Role of Masks in Mitigating the SARS-CoV-2 Pandemic: Another Piece of the Puzzle
Commentaries: Expert reaction to paper using an RCT to assess mask use as a public health measure to help control SARS-CoV-2 spread (DANMASK-19) – Science Media Centre AND Here’s How to Think About the Danish Mask Study – MedPage Today AND Lead Researcher Behind Controversial Danish Study Says You Should Still Wear A Mask – Forbes AND Denmark trial measures effectiveness of adding a mask recommendation to other public health measures for preventing SARS-CoV-2 infection – ACP Newsroom
“questioning why a top medical journal would publish a large randomized trial on an important issue is absolutely antithetical to science. Of course they should, so we may all read and debate it” (via @VPrasadMDMPH see Tweet)
Commentaries on Twitter (threads – click for more)
Not perfect, nor confirmatory, but a good enough study to modulate the probability of a large self-efficacy from masks. Study powered to a 50% RRR, correctly concluded that it does not reduce infection by 50%. A negative study is negative only for the effect size it was powered https://t.co/aDPxRoIuqS
— Luis Correia (@LuisCLCorreia) November 19, 2020
So, The Big Mask study has been published, and I thought rather than expound on what the results DID show (everyone's doing that), I might point out a few things that they DIDN'T show 1/n pic.twitter.com/zG4jtXQVVq
— Health Nerd (@GidMK) November 18, 2020