What can some simple Bayesian analysis tell us about vaccine safety?
Steve Kirsch posed the following problem:
He has a dataset of 7500 people of whom 5625 were vaxxed; 1875 were unvaxxed
Over a period of 6 months (182 days) 15 people died, ALL from the vaxxed group
Of the 15 who died, 4 died within 24 hours of getting the vaccine.
Steve asked what’s the probability of this happening if the vaxx was safe?
(update: Steve has now written up about the context/source fot this dataset: )
Here’s how I answered it using Bayes Theorem to combine the different pieces of evidence. (Note: this assumes the data is accurate, ignores all confounders like age, and assumes the vaxxed and unvaxxed are similar types of people)
Software used for the Bayesian network analysis is
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