Table 1

Number of correct reader assessments when the annular long-axis diameter is unknown (A) and known (B)

	Cardiac surgeons		Interventional cardiologists
	R1	R2	R3	R4	R5
(A) Unaware of annular long-axis diameter
20 mm (n/N(%))	0/1(0)	0/1(0)	0/1(0)	0/1(0)	0/1(0)
23 mm (n/N(%))	8/23(35)	7/23(30)	14/23(61)	15/23(65)	18/23(78)
26 mm (n/N(%))	9/16(56)	10/16(63)	11/16(69)	13/16(81)	10/16(63)
29 mm (n/N(%))	8/10(80)	9/10(90)	6/10(60)	6/10(60)	6/10(60)
K (95% CI)	0.28 (0.10 to 0.47)	0.31 (0.13 to 0.50)	0.42 (0.22 to 0.62)	0.51 (0.32 to 0.70)	0.52 (0.33 to 0.70)
Kw (95% CI)	0.47 (0.28 to 0.66)	0.50 (0.32 to 0.68)	0.63 (0.46 to 0.80)	0.73 (0.60 to 0.85)	0.73 (0.60 to 0.86)
(B) Aware of annular long-axis diameter
20 mm (n/N(%))	0/1(0)	0/1(0)	0/1(0)	0/1(0)	0/1(0)
23 mm (n/N(%))	10/23(43)	10/23(43)	14/23(61)	12/23(52)	20/23(87)
26 mm (n/N(%))	10/16(63)	9/16(56)	10/16(63)	13/16(81)	10/16(63)
29 mm (n/N(%))	7/10(70)	6/10(60)	6/10(60)	7/10(70)	6/10(60)
K (95% CI)	0.32 (0.12 to 0.52)	0.28 (0.08 to 0.48)	0.39 (0.18 to 0.59)	0.48 (0.29 to 0.66)	0.56 (0.37 to 0.75)
Kw (95% CI)	0.54 (0.35 to 0.73)	0.47 (0.27to 0.66)	0.62 (0.45 to 0.79)	0.74 (0.63 to 0.84)	0.77 (0.66 to 0.88)