In univariate analysis for the discrimination of ADHF in the presence of AF, AUCs in both countries are reduced and similar (NZ; 0.71, SG; 0.61, p = 0.331), and not inferior to that of NT-proBNP (NZ; p = 0.968, SG; p = 0.728) (Table 5). Here, NPPB is linked to atrial fibrillation.