Fig. 4From: Central wave reflection is associated with peripheral arterial resistance in addition to arterial stiffness in subjects without antihypertensive medicationComparison of two methods in the evaluation of large arterial stiffness. Correlation between pulse wave velocity measured using impedance cardiography and applanation tonometry, the lines depict mean and 95 % confidence intervals of mean (a); and differences between the two methods plotted against the average value of the methods with limits of agreement (±2SD) shown (b)Back to article page