Figure 2 —

Agreement between daytime ambulatory systolic blood pressure (SBP) and comparator measurements (in millimeters of mercury). Bland-Altman scatterplots show the mean of the ambulatory and comparator SBP measurements on the x axes and the difference of those readings on the y axes. Horizontal lines mark the mean difference in SBP between the methods and the upper and lower limits of the 95% confidence interval for that difference. (A) BpTRU (BpTRU Medical Devices, Coquitlam, BC, Canada) comparator measurement. (B) Office comparator measurement. (C) Home comparator measurement. ΔSBP = (SBP by comparator method) - (SBP daytime ambulatory measurement).