ArticleJournal of clinical medicine2021
The Effects of Income Level on Susceptibility to COVID-19 and COVID-19 Morbidity/Mortality: A Nationwide Cohort Study in South Korea.
Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Impacts of the COVID-19 pandemic on Brazilian families: a countrywide population-based survey.International journal of epidemiology · 2026Article
- Longitudinal assessment of immunogenicity of inactivated COVID-19 booster immunization and breakthrough infection in blood donors: A multicenter study from 2021 to 2023.Human vaccines & immunotherapeutics · 2025Article
- The mediating role of SARS-CoV-2 variants between income and hospitalization due to COVID-19: a period-based mediation analysis.American journal of epidemiology · 2025Article
- Causal effects of education, intelligence, and income on COVID-19: evidence from a Mendelian randomization study.Human genomics · 2025Article
- The association of combinations of social factors and SARs-CoV-2 infection: A retrospective population-based cohort study in Ontario, 2020-2021.Dialogues in health · 2024Article
- The impact of lockdown on child adjustment: a propensity score matched analysis.BMC psychology · 2024Article
- Article
- Did the socioeconomic inequalities in avoidable and unavoidable mortality worsen during the first year of the COVID-19 pandemic in Korea?Epidemiology and health · 2023Article
- Mortality in Four Waves of COVID-19 Is Differently Associated with Healthcare Capacities Affected by Economic Disparities.Tropical medicine and infectious disease · 2022Article
- Impact of the COVID-19 Pandemic on Global Diseases and Human Well-Being.Journal of clinical medicine · 2022Article
- Sero-prevalence and risk factors for Severe Acute Respiratory Syndrome Coronavirus 2 infection in women and children in a rural district of Bangladesh: A cohort study.Journal of global health · 2022Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
This study aimed to investigate the association of income level with susceptibility to coronavirus disease 2019 (COVID-19) and COVID-19 morbidity and mortality. Using the Korean National Health Insurance COVID-19 Database cohort, medical claim data from 2015 through 2020 were collected. A total of 7943 patients who were diagnosed with COVID-19 from 1 January 2020 to 4 June 2020 were included. A total of 118,914 participants had negative COVID-19 PCR tests. Income levels were classified by 20th percentiles based on 2019 Korean National Health Insurance premiums. The 20th percentile income levels were categorized into three groups (low, middle, and high). The relationship of income level with susceptibility to COVID-19 and COVID-19 morbidity and mortality was analyzed using logistic regression analysis. A high income level was related to lower odds of COVID-19 infection (adjusted odds ratio (aOR) = 0.79, 95% confidence interval (CI) = 0.75-0.83,
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