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Alan Cassels
In this skill-testing question, tell me which of these statements is true:
-The shingles vaccine is 90% effective in preventing shingles.
-The shingles vaccine prevents shingles in ONE in every 32 people vaccinated. The other 31 people see no benefit.
Answer: both are true.
Guess which statement dominates the marketing of Shingrix, the most popular shingles vaccine in America?
90% effective. 90% effective. 90% effective.
That’s the main marketing message coming from the Centers for Disease Control and Prevention discussing the efficacy of the vaccine. So common is this sort of statistical sleight of hand that the CDC doesn’t even seem to see any real problem in how those effects are presented to the public. Because they are so impactful, and are essentially marketing messages, and they need to be deconstructed.
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