Fig. 3
a Bland–Altman plots illustrating the agreement of right ventricular stroke work index (RVSWI) by right heart catheterization and the four different echocardiographic methods for calculation of RVSWI (RVSWIECHO1-4). The red lines represent the absolute bias and the green lines represents the level of agreement (LOA). b Bland–Altman plots based on the percentage differences in RVSWI between right heart catheterization and echocardiography. The red lines represent the relative bias and the green lines represents the level of agreement (LOA)