Coronavirus and Simpson’s paradox: Oldsters are more likely to be vaccinated and more likely to have severe infections, so you need to adjust for age when comparing vaccinated and unvaccinated people

Biostatistician Jeff Morris writes: I [Morris] have downloaded and evaluated the recent Israeli data in detail to explore what it tells us about efficacy vs. severe disease with the Delta variant. In spite of the fact that ~60% of those with severe infections are vaccinated (as emphasized by anti-vaxxers as well as people pushing third …