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. 2022 Apr;10(4):347–354. doi: 10.1016/S2213-2600(21)00543-9

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© 2022 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Vaccine protection against COVID-19 hospitalisation stratified by markers of an asthma attack, defined by previous oral corticosteroid course in the 2 years before March 1, 2020

HRs were derived using Cox proportional hazard models adjusted for age, sex, socioeconomic status, body-mass index, number of risk groups of interest, and number of non-asthma-related hospitalisations within the 2-year period before March 1, 2020. The reference level for the adjusted HR is the unvaccinated group. HR=hazard ratio.