Table 1.

Performance evaluation of phase estimation during acute ischemia. For each of the body-surface, CS, LV and RV leads the ROC-derived thresholds, determined in artificially induced TWA in control swine, have been applied to the coherence estimation results reported in Figure 3. The 95% confidence intervals are shown in parentheses.

	Lead
	Surface	CS	LV	RV
Sn	0.89 (0.88–0.90)	0.93 (0.92–0.94)	0.94 (0.93–0.94)	0.80 (0.79–0.81)
Sp	0.93 (0.92–0.94)	0.95 (0.94–0.95)	0.92 (0.91–0.92)	1.00 (1.00-1.00)
PV+	0.93 (0.92–0.93)	0.95 (0.94–0.95)	0.92 (0.91–0.93)	1.00 (1.00-1.00)
PV−	0.90 (0.89–0.90)	0.93 (0.92–0.94)	0.93 (0.93–0.94)	0.83 (0.83–0.84)
Accuracy	0.91 (0.90–0.92)	0.94 (0.94-0.94)	0.93 (0.92–0.94)	0.90 (0.90-0.90)

(Sn: Sensitivity; Sp: Specificity; PV+: Positive predictive value; PV−: Negative predictive value).