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. 2024 Sep 13;38(12):814–820. doi: 10.1038/s41371-024-00956-9

Fig. 1. Modified Bland–Altman plots of WatchBP central systolic pressure compared against multiple reference methods.

Fig. 1

Plots compare the difference between the cSBP estimates of the WatchBP and the reference cSBP values (Y-axis) against the reference cSBP (X-axis). Bias (blue dashed lines) and limits of agreement (black dotted lines) are shown. n = 11 patients with 25 individual comparisons for the left panel, n = 27 with 57 comparisons for the middle panel, and n = 39 with 78 comparisons for the right panel. The blue shaded box represents the range of acceptable bias values. The black bracket on the right-hand side of each plot represents the acceptable limits of agreement (LOA, given the measured bias). In the third panel, the filled black dots represent data from data from Group 1 and the unfilled black dots represent data from Group 2.