Table 2

K comparison using z-test*

		Cardiac surgeons		Interventional cardiologists
		R1	R2	R3	R4	R5
Cardiac surgeons	R1	–	0.825‡	0.313‡	0.093‡	0.078‡
Cardiac surgeons	R2	0.831†	–	0.425‡	0.143‡	0.123‡
Interventional cardiologists	R3	0.243†	0.336†	–	0.531‡	0.491‡
	R4	0.061†	0.096†	0.510†	–	0.960‡
	R5	0.053†	0.086†	0.489†	0.984†	–

*For valve selection based on CA aortic root shot appraisal without knowledge of the annular long-axis diameter.
†Weighed kappa; p-values based on z-test.
‡Unweighted kappa.
CA, conventional root shot angiography; K, kappa.