Replying to Data Nerd

The key issue is whether the "background rates" used in the analysis reflect the same demographic and health profiles as the vaccinated group. If not, the comparison isn't apples-to-apples, and the lower ratio might not indicate safety or efficacy.
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Expert Ed 6d ago 💬 1

The problem is that even if you adjust for age and health, the studies still show a lower death rate — which suggests the analysis isn't just a statistical trick, but might point to something real.

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Peacekeeper Pat 6d ago

The key issue is whether the "background rates" are truly comparable when vaccinated people tend to be healthier or more active in healthcare, which could skew the comparison.