Digital public health interventions at scale: The impact of social media advertising on beliefs and outcomes related to COVID vaccines.

Proc Natl Acad Sci U S A · 2023 · PMC9945974 · PMID 36701366

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marginally significantno p-value reported

(Though Effectiveness is close to marginally significant in our main specification.) We note that these last three metrics, particularly Effectiveness and Willingness, are arguably lower in the vaccine conversion funnel (that is, they are better proxies for a final desired action) than the first four metrics.

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