Table 3. Correlation between the B type natriuretic and the inactive N-terminal pro-BNP chain with the clinical and laboratorial variables.

	BNP (95% CI)	p value	NT-proBNP (95% CI)	p value
Age	0.176 (0.003;0.027)	0.018	0.228 (0.009;0.035)	0.002
LVEF	-0.224 (-0.039;-0.008)	0.003	-0.264 (-0.049;-0.015)	<0.001
Obesity (BMI>30)	-0.104 (-0.833;0.131)	0.152	-0.074 (-0.82;0.245)	0.287
Anemia (yes)	0.436 (0.851;1.715)	<0.001	0.451 (1.056;2.01)	<0.001
Renal failure (yes)	0.206 (0.174;1.058)	0.007	0.214 (0.250;1.225)	0.003

95% CI: 95% confidence interval; NT-proBNP: N-terminal pro-BNP fraction; LVEF: left ventricle ejection fraction; BMI: body mass index.

LN(BNP): neperian logarithm of BNP; LN(NT-proBNP): neperian logarithm of NT-proBNP.