Table 2.

Summary of the correlation of IVUS with reference to OCT for atherosclerotic plaque composition (n=146 sites).

	Specificity (%)	Sensitivity (%)	PPV (%)	κ	ROC area	LR+	LR−
Plaque containing lipid	93.9	24.1	93	0.10	0.59	3.95	0.81
Lipid-rich plaque#	56.7	35.9	49	−0.07	0.46	0.83	1.13
Calcification	66.4	92.9	23	0.25	0.80	2.76	0.11
Disruption	96.1	66.7	17	0.04	0.53	17.1	0.35

PPV: positive predictive value; ROC area: area under Receiver Operating Characteristic curve; LR+: likelihood ratio positive; LR−: likelihood ratio negative;

^#plaque with lipid content occupying at least 2 quadrants.