Figure 4.

Twenty four–hour and home systolic (S) and diastolic (D) blood pressure (BP) values in normotensive (N) and white coat hypertensive (WCH) subjects from the PAMELA (Pressioni Arteriose Monitorate e Loro Associazioni) population. Bottom, Left, Prevalence (%) of nocturnal hypertension in N and WCH. Bottom, Right, SBP variability in N, WCH, and sustained hypertension (SH) of the PAMELA study. P refers to data adjusted for age and sex. Twenty-four-hour BP variability was calculated as the variability value that survived the elimination of the oscillatory variability components (day-night and prepostprandial) identified by the Fourier analysis, which was termed residual or erratic variability. Data derived from Mancia et al,³³ Cuspidi et al,³⁹ and Mancia et al.⁸