Table 4. Linear mixed model analysis of the parameters used in the calculation of Pr.

	kd s-1	P∞ mmHg	ks s-1
Intercept	2.26 (1.86,2.66)	54.3 (50.7,57.9)	17.3 (15.6,18.9)
Slope	0.152 (0.067,0.237)	1.22 (0.78,1.66)	-1.61 (-1.96,-1.26)
Fractional Slope	6.7%	2.2%	-9.3%
ICC	0.989	0.903	0.944

Intercept – the intercept of the linear mixed model for the 5 aortic sites for all patients, Slope – the beta coefficient of the linear mixed model, % slope – 100 x slope/intercept, ICC – the intraclass correlation coefficient. kd – diastolic rate constant, P_∞ - asymptote of the exponential diastolic pressure fall-off, ks – systolic rate constant. The intercept and slope are given as mean (95% confidence interval).