LordoftheMorons posted... Good explainer on how the data supposedly showing a huge decrease in vaccine efficacy in Israel is actually to a large extent caused by a statistical anomaly known as Simpsons Paradox:
https://twitter.com/birdyword/status/1428001457341665283?s=21
Basically, since those most at risk for covid are also those who are most likely to be vaccinated, it can look like the vaccine is much less effective than it is in reality because being vaccinated means youre more likely to be old, and being old means youre more likely to get severe covid.
This is a huge problem, because most people, and in particular the media, are so terrible with numbers and statistics that they will immediately latch on to the simplest number they can understand. It blows my mind how little emphasis school systems place on probability and statistics, given that they are probably the single most important math discipline for every day life.