. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: J Am Soc Echocardiogr. 2013 Sep 27;27(1):10.1016/j.echo.2013.08.023. doi: 10.1016/j.echo.2013.08.023

Table 3.

Association of Frontal QRS-T Angle with B-type Natriuretic Peptide and Echocardiographic Parameters on Unadjusted and Multivariable Adjusted Linear Regression Analysis

Dependent variable	Unadjusted		Multivariable-adjusted^*		Additional adjustment for BNP^**

	β-Coefficient (95% CI)	P-value	β-Coefficient (95% CI)	P-value	β-Coefficient (95% CI)	P-value
• Log BNP, pg/ml	0.46 (0.31, 0.60)	<0.001	0.18 (0.03, 0.33)	0.019	—	—
• Tissue Doppler s’ velocity, cm/s	−0.55 (−0.76, −0.34)	<0.001	−0.38 (−0.62, −0.13)	0.002	−0.33 (−0.57, −0.08)	0.010
• Tissue Doppler e’ velocity, cm/s	−0.61 (−0.88, −0.33)	<0.001	−0.50 (−0.82, −0.18)	0.002	−0.49 (−0.81, −0.17)	0.003
• E/e’ ratio	2.29 (1.37, 3.22)	<0.001	1.40 (0.34, 2.44)	0.010	1.09 (−0.02, 2.20)	0.055
• Isovolumic relaxation time, ms	7.75 (5.42, 10.09)	<0.001	4.91 (2.20, 7.62)	<0.001	3.69 (0.92, 6.45)	0.009
• LV mass index, g/m²	10.39 (6.90, 13.87)	<0.001	5.95 (1.74, 10.15)	0.006	4.63 (0.18, 9.07)	0.041
• TAPSE, cm	−0.16 (−0.22, −0.10)	<0.001	−0.13 (−0.20, −0.06)	0.001	−0.09 (−0.17, −0.01)	0.023
• RV wall thickness, mm/m²	0.15 (0.09, 0.22)	<0.001	0.11 (0.04, 0.17)	0.001	0.08 (0.01, 0.14)	0.021

Multivariable model adjusted for age, sex, body-mass index, diabetes mellitus, atrial fibrillation, coronary artery disease, estimated glomerular filtration rate, amiodarone use, diuretic use, QRS interval, and QTc interval

^**

Includes all covariates of the multivariable model plus log BNP

BNP, B-type natriuretic peptide; TAPSE, tricuspid annular plane systolic excursion; RV, right ventricular; LV, left ventricular; CI, confidence interval.