Table 6 Inter-observer agreement and reproducibility.

	Structural interventionalist–structural interventionalist two			Structural interventionalist–imaging specialist			Structural interventionalist–cardiac surgeon
	Mean Difference (SD)	ICC (95%CI)	COV (%)	Mean Difference (SD)	ICC (95%CI)	COV (%)	Mean Difference (SD)	ICC (95%CI)	COV (%)
Inter-observer
Area [mm²]	− 2.36 (23.4)	0.991 (0.977–0.996)	4.65	− 23.14 (34.20)	0.973 (0.893–0.991)	6.65	− 53.50 (36.33)	0.934 (0.112–0.984)	6.86
Area derived diameter [mm]	− 0.07 (0.60)	0.989 (0.972–0.996)	2.38	− 0.61 (0.87)	0.966 (0.859–0.988)	3.43	− 1.34 (0.95)	0.917 (0.084–0.980)	3.69
Avg. diameter [mm]	− 0.02 (0.69)	0.984 (0.960–0.994)	2.72	− 0.45 (0.91)	0.967 (0.907–0.988)	3.57	− 1.31 (0.95)	0.917 (0.084–0.980)	3.59
Perimeter [mm]	− 0.57 (2.01)	0.987 (0.968–0.995)	2.49	− 1.87 (2.54)	0.969 (0.863–0.990)	3.13	− 4.54 (3.11)	0.904 (0.005–0.977)	3.77
SOV average diameter [mm]	− 0.03 (0.61)	0.996 (0.990–0.998)	1.82	− 0.13 (0.51)	0.997 (0.992–0.999)	1.53	− 0.01 (0.56)	0.997 (0.991–0.999)	1.67

	Structural interventionalist–general physician			Structural interventionalist–medical student
	Mean Difference (SD)	ICC (95%CI)	COV (%)	Mean Difference (SD)	ICC (95%CI)	COV (%)
Intra-observer
Area [mm²]	− 22.91 (47.15)	0.965 (0.902–0.987)	9.17	− 68.45 (54.62)	0.901 (0.136–0.974)	10.14
Area derived diameter [mm]	− 0.81 (0.92)	0.960 (0.752–0.988)	3.60	− 1.66 (1.25)	0.891 (0.048–0.972)	4.82
Average diameter [mm]	− 0.8 (1.02)	0.953 (0.773–0.985)	3.97	− 1.56 (1.26)	0.897 (0.137–0.973)	4.83
Perimeter [mm]	− 3.54 (2.95)	0.944 (0.398–0.986)	3.60	− 10.72 (6.30)	0.708 (0.215–0.920)	7.35
SOV average diameter [mm]	0.24 (1.10)	0.986 (0.965–0.994)	3.31	− 0.04 (0.74)	0.994 (0.985–0.998)	2.20

Results are reported as mean (SD). SOV: sinus of valsalva; ICC: intraclass-correlation coefficient; CoV: coefficient of variation; SD: standard deviation; CI: confidence interval.

Search