Fig. 1
From: IgE is associated with exacerbations and lung function decline in COPD
Distribution of IgE in serum. Shown are total IgE and allergen-specific IgE (as measured by the SX1 screening test) levels in the COSYCONET cohort. Box plots display the median (line within the box), interquartile range (edges of the box) and extremes (vertical lines). The dotted lines show currently accepted cut-offs for normal values. The differences between men and women were highly significant (***: p < 0.001)