Is vaccine efficacy a statistical illusion?

To evaluate the risk/benefit of a vaccine for treating a virus, such as covid-19, we can compare the all-cause mortality rate of vaccinated against unvaccinated people on a periodic basis. If the mortality rate for those vaccinated is consistently lower than that for unvaccinated then we might conclude the vaccine must be beneficial.

link

The author elegantly argues it is a statistical illusion. Well-worth reading and not hard to follow. ABN

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