Abstract

This study investigated the extent to which ethnic inequalities in severe COVID-19 (i.e. hospitalization or deaths) are mediated through occupational risk differences. We used a population-based cohort study linking the 2011 Scottish Census to health records. We included all individuals aged 30–64 years and living in Scotland on 1 March 2020. The study period was from 1 March 2020 to 17 April 2022. Self-reported ethnicity was taken from the Census. We derived occupational risk of SARS-COV-2 infection using the 3-digit Standard Occupational Classification (SOC2010). We estimated hazard ratios (HRs) of total effects and controlled direct effects of ethnicity on severe COVID-19 mediated by occupational risk using marginal structural Cox models and subsequent proportional change. For aggregated ethnic groups, Non-White groups experienced a higher risk of severe COVID-19 (HR 1.6; 95% CI 1.4–1.8) compared to White group (all White ethnic groups) which increased to (1.7; 1.4–2.1) after accounting for occupational risk, representing a 6.0% change. For disaggregated ethnic groups, risks for South Asian (2.0; 1.8–2.3), African, Caribbean, or Black (1.3; 0.9–1.7) and Other ethnic groups (1.1; 0.9–1.3) were higher compared to White Scottish. After accounting for occupational risk, estimated risk of severe COVID-19 remained elevated for South Asian (1.8; 1.2–2.3), African Caribbean or Black (1.4; 0.8–2.1) and Other ethnic group (1.7; 1.1–2.3) representing a reduction of 11.8% and increases of 16.4% and 59.0%, respectively. Our findings suggest that ethnic inequalities in severe COVID-19 were impacted by differences in occupational risk.

Rights

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

Cite as

Kibuchi, E., Amele, S., McCabe, R., Demou, E., Leyland, A., Simpson, C., Shi, T., Irizar, P., Bécares, L., Sheikh, A., Pearce, A. & Katikireddi, S. 2025, 'Are ethnic inequalities in COVID-19 outcomes mediated by occupation risk? Analyses of a two-year record linked national cohort study in Scotland', European Journal of Public Health, article no: ckaf025. https://doi.org/10.1093/eurpub/ckaf025

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Last updated: 29 March 2025
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