Table 4.

Comparison of diagnostic performance between CardioTracker and the conventional pulse oximeter at the fingertip (control).

Device	Accuracy, mean percentage	Sensitivity, mean percentage	Specificity, mean percentage	Positive-predictive value, mean percentage	Negative-predictive value, mean percentage	AUCa (95% CI)b
CARTc	96.89	98.96	94.34	95.55	98.67	0.993 (0.992-0.993)
Control	97.50	99.66	94.89	95.95	99.56	0.995 (0.995-0.995)

^aAUC: area under the receiver operating characteristic curve.

^bThe standard error by the binomial exact test was less than 0.01.

^cCART: CardioTracker.