Fig. 1

Illustration of the area under the curve (AUC) of systolic blood pressure (SBP). The area under the curve (AUC) of systolic blood pressure (SBP) was calculated as the integral of the curve parameters during the follow-up period in each of these two subjects. The incremental AUCs were different in the two individuals as examples. a = incremental AUC; b = baseline AUC; a + b = total AUC.