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Fig. 2 | BMC Medicine

Fig. 2

From: Patient-reported reactogenicity and safety of COVID-19 vaccinations vs. comparator vaccinations: a comparative observational cohort study

Fig. 2

Data selection and preparation process. If a person registered twice with the same email address, data sets were merged. If an email address was used by more than one participant, data records were considered separately. Batch numbers were checked for plausibility: surveys regarding vaccinations with invalid batch numbers were counted as missing; invalid batch number was defined as an unknown number or an incorrect combination of number and vaccine

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BMC Medicine

ISSN: 1741-7015

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