Study population
Patients eligible in the GERIA-COVID study were adults aged 75 years and over admitted into the geriatric acute care unit of the University Hospital of Angers, France, during the first wave of the pandemic (between March and June 2020) who were no objection for using anonymized clinical and biological data for research purpose.The inclusion criteria for the present analysis were as follows: (i) COVID-19 diagnosed with RT-PCR and/or chest-CT scan; (ii) data available on the vital status 1 year after the diagnosis of COVID-19. Ninety-seven patients were diagnosed with COVID-19 during the study period in the unit, and were recruited in the GERIA-COVID study. This analysis included all of them.