Covid vaccination rates and deaths were rather famously subject to it. E.g. some combination of stats like “most covid deaths were vaccinated individuals”, “vaccination reduces death rate”, and “population segment with lowest vaccination rates has lowest covid death rates.” were all true at the same time.
Those aren't examples of Simpsons even taken together, but there was a famous (by which I mean it got a lot of press, including being written up in the Times and Post when it came out) study that showed that although every subgroup in Italian demographic data had lower CFRs than their Chinese counterparts, the Chinese group had a lower CFR when taken as a whole:
