Thread by @serenatinari

(1/4) This @CochraneLibrary review

https://twitter.com/CochraneLibrary/status/1393170994026713088?s=20

is based on modelling and observational studies. In other words, LOW level of evidence. The #Covid era has trashed well-established standards and practices. What does this mean? cc @RecheckHealth @CatherineRiva

(2/4) Throughout this crisis, public health authorities put the world in stand-by without knowing if that would make sense. Instead of quality studies to assess the effectiveness of non-pharmaceutical interventions, we are left with low level of evidence. #evidencefreepandemic

(3/4) In less than two years, clinical medicine and a robust evidence-based approach indeed seem to not count anymore. But there is a good reason why #publichealth policies need solid evidence. It's because all interventions come with downsides. #GIJNHealthGuide

(4/end) In the #COVID era, as this @CochraneLibrary paper ultimately demonstrates, we are on a blind flight. Observational data and models are not good enough to come to reliable conclusions. Sad, that medical journalists needs to say it. #EBM @RecheckHealth @CatherineRiva