Table 2.

Specificity (Spec), Sensitivity (Sens) as well as Negative (NPV) and Positive Predictive Value (PPV) of the Four Diagnostic Methods for the Prediction of Coronary Artery Disease in Patients With Acute Chest Pain Without Pretest Probability

	MCG			ECG n = 160b	Trop I n = 185	Echo n = 184c
	R1 (n = 185)	R2 (n = 183a)	AUT (n = 185)
Spec	92.8%	76.2%	82.5%	91.1%	90.5%	76.2%
Sens	95.1%	88.7%	86.4%	33.9%	42.7%	51.0%
NPV	84.8%	66.7%	63.5%	27.4%	31.7%	31.4%
PPV	97.8%	92.6%	94.5%	93.3%	93.8%	87.9%

^aThe raw data of two patients could not be used because of a disk error; ^bThirteen patients had left bundle branch block (LBBB), and 12 right bundle branch block (RBBB), so that the ECG could not be evaluated; ^cIn 1 patient, ECHO was missing.

R1 = reader 1; R2 = reader 2; AUT = automated analysis.