Table 2.

Inter‐ and Intraobservational Variability in Measuring Edge Lengths

Edge Length of Mitral Tetrahedron, mm	Interobservational Variabilitya		Intraobservational Variabilitya
	ICCinter b	SEE	ICCIntra b	SEE
DAP	0.72	1.16	0.77	1.08
DAL	0.92	2.63	0.91	2.77
DAM	0.89	2.61	0.93	2.11
DPL	0.89	2.59	0.97	1.49
DPM	0.93	1.86	0.95	1.67
DML	0.90	1.89	0.97	1.1

Abbreviations: D_AL, the distance between the root of lateral papillary muscle and the anterior annulus; D_AM, the distance between the root of medial papillary muscle and the anterior annulus; D_AP, distance between the anterior and posterior annulus; D_ML, the interpapillary muscle roots distance; D_PL, the distance between the root of lateral papillary muscle and the posterior annulus; D_PM, the distance between the root of medial papillary muscle and the posterior annulus; SEE, standard error of estimation.

^aInter‐ and intraobservational variability presented as inter‐ and intracorrelation coefficients (ICC_inter and ICC_Intra) with SEE of ICCs.

^bAll ICCs are significant with a P value <0.001.