Table IV.

Pearson’s correlation coefficients between electrocardiographic variables and BMI, WC and WHtR.

	BMI		BMIa		WC		WCa		WHtR		WHtRa
Variables	r	P-value	r	P-value	r	P-value	r	P-value	r	P-value	r	P-value
HR	−0.037	0.006	0.028	0.061	−0.080	<0.001	0.012	0.398	0.031	0.024	0.029	0.049
PR interval	0.160	<0.001	0.076	<0.001	0.185	<0.001	0.081	<0.001	0.057	<0.001	0.043	0.003
QRS duration	0.161	<0.001	0.101	<0.001	0.174	<0.001	0.099	<0.001	0.127	<0.001	0.063	<0.001
QTc duration	0.011	0.409	−0.002	0.897	0.004	0.771	−0.012	0.432	−0.016	0.231	−0.015	0.317
P-wave axis	−0.013	0.331	−0.048	0.001	−0.014	0.296	−0.062	<0.001	−0.067	<0.001	−0.067	<0.001
QRS axis	−0.119	<0.001	−0.103	<0.001	−0.117	<0.001	−0.097	<0.001	−0.119	<0.001	−0.103	<0.001
T-wave axis	−0.106	<0.001	−0.125	<0.001	−0.088	<0.001	−0.116	<0.001	−0.091	<0.001	−0.124	<0.001

^aAdjusted for age, gender, ethnicity, systolic blood pressure and diastolic blood pressure.

r, Pearson’s correlation coefficient; BMI, body mass index; WC, waist circumference; WHtR, waist-to-height ratio; HR, heart rate; QTc interval, corrected QT interval.