Table 5. Linear mixed model analysis of the parameters describing Pr and Px.
Prmax - Pd mmHg | Tr ms | Pxmax mmHg | Tx ms | IPx mmHg s | |
---|---|---|---|---|---|
Intercept | 52.1 (47.8,56.3) | 308 (297,318) | 20.1 (16.6,23.5) | 144 (125,163) | 4.91 (3.91,5.90) |
Slope | -0.68 (-1.01,0.34) | -6 (-7,-5) | 4.09 (3.64,4.54) | -3 (-7,1) | 0.70 (0.61,0.80) |
Fractional slope | -1.3% | 1.9% | 20.4% | -2.1% | 14.3% |
ICC | 0.978 | 0.962 | 0.964 | 0.914 | 0.972 |
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. Prmax – maximum of Pr, Tr – time to Prmax, IPr – the integral of (Pr – Pd) over the cardiac period, Pxmax – maximum of Px, Tx – time to Pxmax, IPx – integral of Px over the cardiac period. The intercept and slope are given as mean (95% confidence interval).