Table 3.

Sensitivity and specificity for detecting AF on index-ECG for NT-proBNP levels 125 ng/L, 300 ng/L, 450 ng/L, 900 ng/L, and 1800 ng/L

Level of NT-proBNP cut-point (ng/L)	Sensitivity (%)	Specificity (%)
125	97	41
300	86	80
450	86	91
900	59	98
1800	34	100

AF, atrial fibrillation; ECG, electrocardiogram; NT-proBNP, N-terminal B-type natriuretic peptide.