Additional file 1 of Ethnic differences in COVID-19 mortality in the second and third waves of the pandemic in England during the vaccine rollout: a retrospective, population-based cohort study

Additional file 1: Fig. S1. Percentage of people with different postcodes in GP records and 2011 Census by age group. Fig. S2. Directed acyclic graph of the hypothesised relationship between ethnicity and COVID-19 mortality. Table S1. Rates and odds ratios of linkage failure between the 2011 Census and 2011 to 2013 NHS Patient Registers for people living in England at the 2011 Census who were aged 30-100 years in 2020, by sex, age group, ethnicity, region and IMD decile. Table S2. Coding and source of variables included in the analysis. Table S3. Weighted mean follow-up time in days by ethnic groups for wave two and wave three. Table S4. Age-standardised mortality rates (ASMRs) of death involving COVID-19 (8 December 2020 to 1 December 2021) for disaggregated ‘White other’ and ‘Other’ ethnic groups.