Fig. 5
AUC1 minus AUC2 by country. AUC1 is the area under the inhibition curve obtained after competition of increasing dilutions of one 5-grass tablet for the binding of serum IgE from Spanish and Swedish patients (n = 19 and 22, respectively) to immobilized allergens of a 12-grass pollen extract, and detection of the IgE that remained bound to the immobilized allergens; AUC2 is the area under the inhibition curve obtained in the same conditions with increasing dilutions of three 1-grass pollen tablets. The triangle and losange are, respectively, a severe outlier and an outlier corresponding to Spanish patients #00103 and #00118. The p-value was obtained with the exact two-sided Wilcoxon rank-sum test