Table 5: Accuracy of Bispectral Index Monitors To Predict Consciousness and Unconsciousness.

Study (year) Purpose	Sensitivity %	Specificity %	PPV* %	NPV* %
Schneider et al. (2003) (29) For the detection of consciousness	90.6	26.3	55.1	73.7
Sleigh et al. (2001) (37) For the detection of unconsciousness	61	98	97	75

^*PPV indicates positive predictive value; NPV, negative predictive value.