Table 2.

Diagnostic accuracy measures on testing set (n = 499).

Predicting any ACS event
	Ml fusion model	Expert ECG read	Automated ECG read
Sensitivity	0.77 (0.67–0.85)	0.40 (0.30–0.51)	0.25 (0.17–0.35)
Specificity	0.76 (0.72–0.81)	0.94 (0.92–0.96)	0.98 (0.97–0.99)
PPV	0.43 (0.38–0.48)	0.63 (0.51–0.73)	0.79 (0.62–0.90)
NPV	0.94 (0.91–0.96)	0.87 (0.86–0.89)	0.85 (0.82–0.88)
Predicting NSTE-ACS events
Sensitivity	0.72 (0.60–0.81)	0.26 (0.16–0.37)	0.12 (0.06–0.22)
Specificity	0.76 (0.72–0.80)	0.94 (0.92–0.96)	0.98 (0.97–0.99)
PPV	0.36 (0.31–0.41)	0.46 (0.33–0.60)	0.60 (0.35–0.80)
NPV	0.94 (0.91–0.93)	0.87 (0.85–0.89)	0.86 (0.85–0.87)

PPV, positive predictive value; NPV, negative predictive value.