August 2020 in “Research Square (Research Square)” This study found that an age-adjusted Charlson comorbidity index of four or more strongly predicts mortality in South Korean COVID-19 patients, highlighting the impact of comorbidity burden and older age on disease severity.
December 2020 in “Ambiance in Life” This study found that the average mortality rate at their hospital was higher in 2020 compared to 2018 and 2019, and suggests COVID-19 may have begun in Turkey earlier than widely recognized.
114 citations
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March 2021 in “Scientific Reports” This study found that, among COVID-19 patients in South Korea, hypertension, diabetes, and other comorbidities significantly increased mortality risk, with the age-adjusted Charlson comorbidity index being a strong predictor of death.
6 citations
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October 2024 in “npj Digital Medicine” This study observed that patients with COVID-19 had many conditions and phenotypes that increased post-infection, varying by demographics and infection wave, which could enhance understanding and diagnostics of Long-COVID.
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December 2022 in “BMC Public Health” In this study, among over one million COVID-19 patients, several long-term effects were identified, with age and gender commonly associated, while other social determinants showed limited significant associations.
