Fig. 3

Analysis of Inflammatory Factor Concentrations on Admission in Children with COVID-19. a Ferritin (FERR), b calcitonin (PCT), c serum amyloid A protein (SAA) and d C-reactive protein (CRP) concentrations in the peripheral blood from common (group I), severe (group II), and critical (group III) cases were analyzed after hospital admission. Median [min, max]; *, p < 0.05; **, p < 0.01, ***, p < 0.001. Results were tested for significance with the Kruskal–Wallis test