Simpsons' paradox in Canadian study of vaccine hesitancy and increased risk of traffic crash
For those who do not know Simpson’s paradox and why it is so important in understanding and interpreting many observational studies, this 10-minute video explains the paradox using very simple hypothetical data based on the recent Canadian study that showed “Unvaccinated more likely to be injured in a car accident than vaccinated”. The authors of that study hypothesized that this was due to inherent mental and social problems of the unvaccinated. But they did not consider the simple explanation that the unvaccinated were more likely to be driving during the lockdown period since they were banned from planes and trains.
My previous video showing why the Canadian study was stupid: https://youtu.be/_iryCrHaozU
The Canadian study: https://doi.org/10.1016/j.amjmed.2022.11.002
My previous videos on Simpson’s paradox:
https://youtu.be/39RZFm4EEzQ
https://youtu.be/2Dz6XPjD7YE
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