Table 2 Mean difference (bias) between intermittent thermodilution cardiac output (COPAC) and arterial pressure-based cardiac output (COAP) for all values (A) and for percentage changes between consecutive measurements of COPAC (ΔCOPAC) and COAP (ΔCOAP) (B) according to the modified approach by Bland and Altman for unequal numbers of replicates with upper and lower limits of agreement (bias ± 1.96 SD), together with 95% confidence intervals (in parentheses)
From: Evaluation of a new arterial pressure-based cardiac output device requiring no external calibration
A | COPAC [l/min] | COAP [l/min] | Bias (95% CI) [l/min] | Upper limit of agreement (95%CI) [l/min] | Lower limit of agreement (95%CI) [l/min] |
5.93 ± 1.55 | 5.91 ± 1.15 | 0.02 (-0.40 to 0.44) | 2.94 (1.81 to 4.07) | -2.90 (-1.77 to 4.03) | |
B | ΔCOPAC [%] | ΔCOAP [%] | Bias (95% CI) [%] | Upper limit of agreement (95%CI) [%] | Lower limit of agreement (95%CI) [%] |
0.91 ± 18.84 | 1.61 ± 17.08 | -0.70 (-3.45 to 2.05) | 31.58 (26.85 to 36.30) | -32.98 (-37.70 to -28.26) |