Fig. (5).

Reported comparisons between central aortic systolic pressure (cSBP) and radial second systolic pressure (rSBP2). The mean differences between rSBP2 and cSBP reported in three papers [34-36] shown in Table 2 are plotted on the same plane of coordinates with ranges of ±SD of the differences (rectangular height) and limits of agreement (double-arrowed vertical line). The distance between the two horizontal dashed lines may correspond to the pressure difference attributable to the difference between central (CBP) and peripheral (CBP) BPs in calibration pressures (Cal_BP); i.e., noninvasive (NIBP) vs. invasive (IBP).