Fig. 1
From: Variability in total serum IgE over 1 year in severe asthmatics
The 12-month variability in sIgEtot in severe asthmatic patients stratified by sIgEtot at baseline (low, intermediate and high). The 12-month variability in sIgEtot was evaluated in 41 patients divided post hoc in three strata based on sIgEtot at baseline: < 76 IU/mL (n = 10) (a); 76–700 IU/mL (n = 20) (c) and > 700 IU/mL (n = 11) (d). One outliner patient from the low sIgEtot group is shown separately (b). The gray zone indicates the 76–700 IU/mL region (intermediate group) to allow for the identification of patients whose sIgEtot reached the level of a different group during the study period