Figure 4From: Cross-comparison of cardiac output trending accuracy of LiDCO, PiCCO, FloTrac and pulmonary artery cathetersBland-Altman analysis of subgroups of patients with either thermodilution cardiac output (CO TD ) or CCO PAC ( Z -statistic). Solid line, mean difference (bias); dotted lines, limits of agreement (bias ± 1.96 SD).Back to article page