Levels of classical COVID-19 biomarkers with the highest importance among the machine learning models.

Mean ± SEM levels are reported for biochemical markers including C-reactive protein, D-dimer, ferritin, procalcitonin, lactate dehydrogenase (LDH), fibrinogen, prothrombin time, alanine aminotransferase (ALT), and aspartate aminotransferase (AST), as well as cytokines such as IL-1β, IL-6, IL-8, TNF-α, CCL2, IL-12p70, IL-10, IL-13, IL-17A, CXCL10, GM-CSF and IFN-γ for each Severity Score group. Some information is missing for biochemical markers in Score 0 and Score 1 because they were not measured during their admission to the Emergency Service. Pearson correlations were performed between biomarkers and severity score. p = p-value and r = correlation coefficient. In bold, when p