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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Comparing response differences due to answer option design (percentages of participants chose Yes vs. Definitely/Very Likely to a vaccine intention question) *. * Data points do not include Morning Consults and YouGov to simplify the visual presentation.