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Stephen Evans, professor of pharmacoepidemiology, London School of Hygiene and Tropical Medicine, said it was important not to pay too much attention to the exact percentage value of efficacy.
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“While the best estimate is 94.1% against all Covid-19 disease, the statistical uncertainty in this is such that the data are compatible with a true efficacy of about 87%,” he said. “This is, of course, still a very good efficacy. Similarly, the 100% efficacy against more severe disease is compatible with an efficacy of 90% again, this is very good and is some evidence that severe as well as mild disease is prevented.”
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Would you expect this kind of information about statistical uncertainty to be helpful?
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BUMT 3100