4.6 Article

Explaining COVID-19 mortality among immigrants in Sweden from a social determinants of health perspective (COVIS): protocol for a national register-based observational study

Journal

BMJ OPEN
Volume 13, Issue 4, Pages -

Publisher

BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2022-070670

Keywords

COVID-19; INFECTIOUS DISEASES; SOCIAL MEDICINE

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Using a social determinants of health perspective, this project aims to study the association between disproportionate COVID-19 mortality among immigrants in Sweden and social factors such as differential exposure to the virus and differential effects of infection due to pre-existing health conditions, healthcare seeking behavior, and inequitable healthcare provision. The study will utilize health and sociodemographic information from Swedish national registers. Statistical modeling techniques including mediation analyses, multilevel models, Poisson regression, and event history analyses will be employed.
Introduction Adopting a social determinants of health perspective, this project aims to study how disproportionate COVID-19 mortality among immigrants in Sweden is associated with social factors operating through differential exposure to the virus (eg, by being more likely to work in high-exposure occupations) and differential effects of infection arising from socially patterned, pre-existing health conditions, differential healthcare seeking and inequitable healthcare provision. Methods and analysis This observational study will use health (eg, hospitalisations, deaths) and sociodemographic information (eg, occupation, income, social benefits) from Swedish national registers linked using unique identity numbers. The study population includes all adults registered in Sweden in the year before the start of the pandemic (2019), as well as individuals who immigrated to Sweden or turned 18 years of age after the start of the pandemic (2020). Our analyses will primarily cover the period from 31 January 2020 to 31 December 2022, with updates depending on the progression of the pandemic. We will evaluate COVID-19 mortality differences between foreign-born and Swedish-born individuals by examining each mechanism (differential exposure and effects) separately, while considering potential effect modification by country of birth and socioeconomic factors. Planned statistical modelling techniques include mediation analyses, multilevel models, Poisson regression and event history analyses. Ethics and dissemination This project has been granted all necessary ethical permissions from the Swedish Ethical Review Authority (Dnr 2022-0048- 01) for accessing and analysing deidentified data. The final outputs will primarily be disseminated as scientific articles published in open-access peer-reviewed international journals, as well as press releases and policy briefs.

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