Table 2 Comparison of values for mean arterial pressure, systolic blood pressure and diastolic blood pressure obtained from the non-invasive measurements arm cuffs (NIBP) compared with invasive arterial line (INV) in 29 participants (359 pairs of NIBP-INV measurements). Summary of the calculated bias and 95% limits of agreement with 95% CIs calculated and used to create the modified Bland-Altman plots shown in Additional Figure 3, INV – NIBP
INV-NIBP | Bias (SD) mmHg | Lower LOA (95% CI) mmHg | Upper LOA (95% CI) mmHg |
|---|---|---|---|
Systolic blood pressure | -0.6 (16.8) | -33.5 (-43.8 – -26.4) | 32.4 (25.2 – 42.7) |
Diastolic blood pressure | -1.7 (10.6) | -22.5 (-28.5 – -18.2) | 19.1 (14.9 – 25.2) |
Mean arterial pressure | -3.6 (10.8) | -24.9 (-30.8 – -20.7) | 17.6 (13.5 – 23.5) |