Table 3

 Results of biochemical classification of patients with and without CHF at cut off concentrations with the highest diagnostic accuracy for BNP and NT-proBNP*

NT-proBNPBNPTotal
False classificationCorrect classification
*295 ng/l for BNP and 825 ng/l for NT-proBNP.
McNemar test p = 0.720.
False classification261440
Correct classification17194211
Total43208251