Figure 3
From: Intra-beat biomarker for accurate continuous non-invasive blood pressure monitoring
Assessing accuracy and precision of inpatient BP monitoring using a CAP sensor. (a) Pearson correlation and (b) Bland–Altman analyses compared beat-to-beat (left) SBP, (middle) DBP, and (right) MAP measurements between the noninvasive CAP sensor and invasive A-line. (a) CAP sensor measurements (n = 11,002) showed strong linear correlations to the A-line, with Pearson coefficients of 0.987, 0.960, and 0.980 for SBP, DBP, and MAP, respectively. (b) CAP sensor measurements (n = 11,002) demonstrated mean biases of 0.05 (3.07), − 0.21 (2.47), and − 0.12 (2.35) mmHg for SBP, DBP, and MAP, respectively. Light- and dark-shaded areas represent 68% (1 SD) and 95% (1.96 SD) limits of agreement, respectively.
