1. Chand, M. et al. Investigation of Novel SARS-COV-2 Variant: Variant of Concern 202012/01. Technical Briefing 1 https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/959438/Technical_Briefing_VOC_SH_NJL2_SH2.pdf (Public Health England, 2020).
2. Davies, N. G. et al. Estimated transmissibility and impact of SARS-CoV-2 lineage B.1.1.7 in England. Science https://doi.org/10.1126/science.abg3055 (2021).
3. McLennan, D. et al. English Indices of Deprivation 2019. https://www.gov.uk/government/publications/english-indices-of-deprivation-2019-technical-report (Ministry of Housing, Communities & Local Government 2019).
4. Cox, D. R. Regression models and life‐tables. J. R. Stat. Soc. B 34, 187–202 (1972).
5. Seaman, S. R. & White, I. R. Review of inverse probability weighting for dealing with missing data. Stat. Methods Med. Res. 22, 278–295 (2013).