Table 5. Intra-observer and inter-observer variability for mitral orifice open distance and VFT measurements.

Parameter	Intra-observer (n=20)				Inter-observer (n=20)
	Bias (limits of agreement)	ICC	CoV		Bias (limits of agreement)	ICC	CoV
Mitral orifice open distance (mm)	0.17 (−0.91 to 1.26)	98.5%	2.21		0.33 (−1.15 to 1.81)	97.3%	3.15
VFTvolume	−0.11 (−0.55 to 0.33)	96.8%	5.29		−0.03 (−0.69 to 0.63)	93%	7.56
VFTblood	0.11 (−0.26 to 0.47)	97.4%	5.30		0.19 (−0.56 to 0.93)	88.9%	11.56

VFT, vortex formation time; ICC, intraclass correlation coefficient; CoV, coefficient of variation.