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. 2022 Jul 11;9:958212. doi: 10.3389/fcvm.2022.958212

FIGURE 1.

FIGURE 1

Bias and precision plots according to Taffé method. Figures were constructed according to the Taffé method. (A) Bias plots for systolic and diastolic blood pressure (BP). The x-axis indicates the best linear unbiased prediction (BLUP) or true value of BP. Smartwatch measurements (blue dashed lines) are compared to 24-h BP measurements (solid black line); both values are read from the leftmost y-axis. The bias (difference of smartwatch measurement compared to the 24-h BP measurement) is depicted as a solid red line; the value of bias is read from the rightmost y-axis. (B) Precision plots for systolic and diastolic blood pressure (BP). The x-axis indicates the best linear unbiased prediction (BLUP) or true value of BP. The standard deviation of measurement errors for both measurements are depicted with the 24-h BP measurement depicted in black and the smartwatch method depicted in blue.