Diagnostic performance of coronary computed tomography angiography stenosis score for coronary stenosis

BMC Medical Imaging

Table 2 Performance of CCTA and CCTA-SS for diagnosing CAD

	Optimal threshold	CAD by ICA		Specificity	Sensitivity	NPV	PPV	Accuracy	AUC (95% CI)
	Optimal threshold	No	Yes	Specificity	Sensitivity	NPV	PPV	Accuracy	AUC (95% CI)
CAD diagnosis: ICA ≥ 50%n = 228
CCTA	55%
No		43	23	93.48%	87.36%	65.15%	98.15%	88.60%	0.826 (0.771～0.873)
Yes		3	159	93.48%	87.36%	65.15%	98.15%	88.60%	0.826 (0.771～0.873)
CCTA-SS	51%
No		44	17	95.65%	90.66%	72.13%	98.80%	91.67%	0.909 (0.864～0.943)
Yes		2	165	95.65%	90.66%	72.13%	98.80%	91.67%	0.909 (0.864～0.943)
P-values									<0.05
Severe CAD diagnosis: ICA ≥ 70%n = 228
CCTA	68%
No		50	33	54.95%	75.91%	60.24%	71.72%	67.54%	0.521 (0.454～0.587)
Yes		41	104	54.95%	75.91%	60.24%	71.72%	67.54%	0.521 (0.454～0.587)
CCTA-SS	51%
No		89	10	97.80%	92.70%	89.90%	98.45%	94.74%	0.927 (0.885～0.957)
Yes		2	127	97.80%	92.70%	89.90%	98.45%	94.74%	0.927 (0.885～0.957)
P-values									< 0.0001

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