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Taking a machine learning approach to optimize prediction of vaccine hesitancy in high income countries.


ABSTRACT: Understanding factors driving vaccine hesitancy is crucial to vaccination success. We surveyed adults (N = 2510) from February to March 2021 across five sites (Australia = 502, Germany = 516, Hong Kong = 445, UK = 512, USA = 535) using a cross-sectional design and stratified quota sampling for age, sex, and education. We assessed willingness to take a vaccine and a comprehensive set of putative predictors. Predictive power was analysed with a machine learning algorithm. Only 57.4% of the participants indicated that they would definitely or probably get vaccinated. A parsimonious machine learning model could identify vaccine hesitancy with high accuracy (i.e. 82% sensitivity and 79-82% specificity) using 12 variables only. The most relevant predictors were vaccination conspiracy beliefs, various paranoid concerns related to the pandemic, a general conspiracy mentality, COVID anxiety, high perceived risk of infection, low perceived social rank, lower age, lower income, and higher population density. Campaigns seeking to increase vaccine uptake need to take mistrust as the main driver of vaccine hesitancy into account.

SUBMITTER: Lincoln TM 

PROVIDER: S-EPMC8827083 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature

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Taking a machine learning approach to optimize prediction of vaccine hesitancy in high income countries.

Lincoln Tania M TM   Schlier Björn B   Strakeljahn Felix F   Gaudiano Brandon A BA   So Suzanne H SH   Kingston Jessica J   Morris Eric M J EMJ   Ellett Lyn L  

Scientific reports 20220208 1


Understanding factors driving vaccine hesitancy is crucial to vaccination success. We surveyed adults (N = 2510) from February to March 2021 across five sites (Australia = 502, Germany = 516, Hong Kong = 445, UK = 512, USA = 535) using a cross-sectional design and stratified quota sampling for age, sex, and education. We assessed willingness to take a vaccine and a comprehensive set of putative predictors. Predictive power was analysed with a machine learning algorithm. Only 57.4% of the partici  ...[more]

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