Table V.

Multivariate linear regression analysis for the association between body habitus and electrocardiographic intervals and axes.

	BMI		WC		WHtR
Variables	β (95% CI)	P-value	β (95% CI)	P-value	β (95% CI)	P-value
HR	0.112 (−0.005, 0.228)	0.061	0.019 (−0.025, 0.062)	0.398	6.959 (0.038, 13.880)	0.049
PR interval	0.390 (0.243, 0.537)	<0.001	0.155 (0.100, 0.210)	<0.001	13.024 (4.286, 21.762)	0.003
QRS duration	0.273 (0.195, 0.350)	<0.001	0.099 (0.070, 0.128)	<0.001	10.183 (5.567, 14.799)	<0.001
QTc duration	−0.012 (−0.195, 0.170)	0.897	−0.027 (−0.095, 0.041)	0.432	−5.523 (−16.354, 5.308)	0.317
P-wave axis	−0.430 (−0.689, −0.172)	0.001	−0.208 (−0.304, −0.112)	<0.001	−35.743 (−51.080, −20.407)	<0.001
QRS axis	−0.842 (−1.076, −0.608)	<0.001	−0.296 (−0.383, −0.209)	<0.001	−50.098 (−63.991, −36.205)	<0.001
T-wave axis	−0.649 (−0.797, −0.501)	<0.001	−0.224 (−0.279, −0.169)	<0.001	−38.230 (−47.011, −29.448)	<0.001

Multivariate analysis was adjusted for age, gender, ethnicity, systolic blood pressure and diastolic blood pressure. β, unstandardized regression coefficients; BMI, body mass index; WC, waist circumference; WHtR, waist-to-height ratio; HR, heart rate; QTc interval, corrected QT interval; CI, confidence interval.