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KMID : 1130220230270030241
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Annals of Geriatric Medicine and Research
2023 Volume.27 No. 3 p.241 ~ p.249
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The Risk Factors of COVID-19 Infection and Mortality among Older Adults in South Korea
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Lee Sung-Min
Park Jung-Ha
Lee Jae-Ryun
Lee Jin-Yong
Kim Byung-Sung
Won Chang-Won
Lee Hye-Jin
Kim Sun-Young
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Abstract
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Background : This study aimed to identify the risk factors associated with coronavirus disease 2019 (COVID-19) infection and mortality among older adults in South Korea.
Methods : Using Korean National Health Insurance data from January 1, 2020, to March 31, 2022, we analyzed the impact of various factors, including age, comorbidity burden, and insurance type, on COVID-19 infection and mortality rates.
Results : Age was the most significant risk factor for mortality in older adults. A higher comorbidity burden was also associated with increased infection (odds ratio [OR]=1.33 for Charlson Comorbidity Index [CCI] ≥2, 95% confidence interval [CI] 1.321?1.339) and mortality (OR=1.537 for CCI ≥2, 95% CI 1.459?1.618) rates. While Medical Aid recipients exhibited lower infection rates (OR=0.898, 95% CI 0.89?0.906) than National Health Insurance beneficiaries, they had higher mortality rates (OR=1.692, 95% CI 1.623?1.763).
Conclusion : These results emphasized the need to prioritize vaccination and allocate healthcare resources for older adults, particularly those with multiple comorbidities. Addressing socioeconomic disparities and ensuring equitable access to testing and healthcare services are crucial for mitigating the impact of COVID-19 on older adults.
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KEYWORD
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COVID-19, Mortality, Aged, Republic of Korea, Risk factors
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