Age, comorbidities (i.e. diabetes mellitus and hypertension), laboratory data at admission (i.e. white blood cells, lymphocytes, neutrophils, ferritin, D-dimer, AST, ALT, and creatinine), and treatments during hospitalization (i.e. dexamethasone, systemic corticosteroid, remdesivir, tocilizumab, and baricitinib) were included as covariates in the logistic regression model with the outcome of severe COVID-19 to calculate the propensity score. This evidence concerns the gene GPT and diabetes mellitus.