Fig. 4

Bland-Altman plots for the comparison during beach chair positioning of mean arterial blood pressure (MAP; mmHg) obtained from (a) intermittent non-invasive oscillometric blood pressure assessment (NIBP) to ClearSightTM blood pressure (CS-BP), (b) invasive blood pressure assessment (IBP) to CS-BP, and (c) IBP to NIBP. The solid lines illustrate the mean difference and the dashed lines indicate average differences ±1.96 standard deviation of the difference. The red lines visualize the regression line and indicate whether the differences are dependent on the size of MAP values