{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T13:50:00Z","timestamp":1782222600480,"version":"3.54.5"},"reference-count":36,"publisher":"Wiley","issue":"3-4","license":[{"start":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T00:00:00Z","timestamp":1768089600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T00:00:00Z","timestamp":1768089600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J of Comm Psychol"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Health inequalities persist along lines of income and wealth, shaped by unequal access to healthcare, differences in health behaviors, and pre\u2010existing chronic conditions. The COVID\u201019 pandemic further put families in Korea under health strain and worsened their health outcomes. This study investigates how pre\u2010existing socioeconomic disparities intersect with health outcomes. Using the national administrative health big data provided by the Korean National Health Insurance Service, we employ logistic regression models for 10,459,043 randomly sampled cases from a total of more than 34 million registered positive cases in the country. We specifically examine whether and to what extent individuals from lower income backgrounds with positive cases are more or less likely to experience negative health outcomes. Our findings reveal that individuals from higher income backgrounds are less likely to experience negative health outcomes compared to the lowest income group, including hospitalization (odds ratio [OR]\u2009=\u20090.45, confidence interval [CI]\u2009=\u20090.44, 0.46), severe illness (OR\u2009=\u20090.70, CI\u2009=\u20090.61, 0.81), and fatalities (OR\u2009=\u20090.40, CI\u2009=\u20090.38, 0.41). Furthermore, our subsample analyses based on various demographic characteristics consistently showed that individuals from higher income backgrounds face a lower risk of adverse health outcomes. These results indicate that disadvantaged individuals are disproportionately affected by the health crisis, deepening health inequities. This paper emphasizes the need for targeted public policies.<\/jats:p>","DOI":"10.1002\/ajcp.70044","type":"journal-article","created":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T06:45:22Z","timestamp":1768200322000},"page":"485-495","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The intersection of health inequalities and COVID\u201019: Evidence from National Health Insurance Big Data in South Korea"],"prefix":"10.1002","volume":"77","author":[{"given":"Jaehyun","family":"Nam","sequence":"first","affiliation":[{"name":"Department of Social Welfare Pusan National University Busan South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6493-6049","authenticated-orcid":false,"given":"Sarah Jiyoon","family":"Kwon","sequence":"additional","affiliation":[{"name":"Department of Social Welfare University of Seoul Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9126-0067","authenticated-orcid":false,"given":"Wonik","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Social Welfare Pusan National University Busan South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eunji","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Social Welfare Pusan National University Busan South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,1,11]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.puhe.2023.09.016"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/jech-2020-214401"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpubh.2020.577018"},{"key":"e_1_2_11_5_1","volume-title":"Underlying conditions and risk factors associated with COVID\u201019 severity","author":"Centers for Disease Control and Prevention","year":"2024"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2016.4226"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.2991\/jegh.k.200725.001"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1080\/07853890.2022.2031274"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-45720-2"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1089\/heq.2021.0115"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1136\/jech-2020-215626"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.4178\/epih.e2023068"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-024-74729-2"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.3201\/eid2610.202573"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.1377\/hpb20180817.901935"},{"key":"e_1_2_11_16_1","unstructured":"Korea Disease Control and Prevention Agency. 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