Table 3.

Bland–Altman analysis: the aggregate mean value of the paired values are presented as mean bias, precision, and ±95 % limits of agreement (LOA), which are presented as percent (%) and mL

	Mean bias (%)	Precision (%)	95 % Limits of agreement
			Upper (%)	Lower (%)	% Error
TBEV SV-1 versus TBEV SV-2	2.87	13.59	+29.51	−23.77	–
TBEV SV versus cMRI SV	−1.56	13.47	+24.85	−27.97	–
TBEV CO versus cMRI CO	5.01	12.85	+30.20	−20.17	–

	Mean bias (mL)	Precision (mL)	95 % Limits of agreement
			Upper (mL)	Lower (mL)	% Error
TBEV SV-1 versus TBEV SV-2	2.05	11.99	+25.55	−21.45	–
TBEV SV versus cMRI SV	−1.53	12.84	+23.64	−26.71	26.2

	Mean bias (L min−1)	Precision (L min−1)	Upper (L min−1)	Lower (L min−1)
TBEV CO versus cMRI CO	0.32	0.77	+1.83	−1.19	24.8

Percent error is computed for absolute values of SV and CO. For cardiac output (CO) mean bias, precision, and ±95 % LOA are presented as (%) and L min⁻¹. Note that the mean biases are small and the SD, precision and limits of agreement are similar over the 3 comparisons