2/n The paper is here, with that infamous graphic https://jamanetwork.com/journals/jama/fullarticle/2768533 …
-
-
12/n Problem is, confounding in this study isn't just a small problem - it's an enormous, gaping hole in the reliability of the results
Show this thread -
13/n What if people were wearing masks before the study started? What if the population of HCWs changed during the pandemic? What if reporting of tests changed? What if they simply DID MORE TESTS? So many problems, no answers at all
Show this thread -
14/n To some extent, it's hard to blame the authors for these issues, but it shows why you probably shouldn't report on research letters - they just don't have enough information to make a balanced judgement
Show this thread -
15/n At the absolute minimum for this study, you need an adequate control group to even begin to understand what these results might mean Without that, about all we can say is that they made a pretty graph with lines on it
Show this thread -
Note: all of this is independent of whether you like masks! I'm not saying masks don't work, just that this study says nothing about the question
Show this thread
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.