Table 3.

Comparison of the efficacy of Ai and BIS in monitoring the different states of consciousness of patients in different age groups.

States of consciousness	Index	Age (years)	AUC	SE	95% CI	Cutoff value
Anesthesia-induced unconsciousness	Ai	<60	0.947	0.004779	0.852, 0.942	71.5
		≥60	0.932	0.006998	0.866, 0.938	70.5
	BIS	<60	0.947	0.005216	0.879, 0.937	72.5
		≥60	0.939	0.006647	0.892, 0.919	72.5
LOC	Ai	<60	0.958	0.005202	0.889, 0.967	78.5
		≥60	0.945	0.007534	0.882, 0.977	75.5
	BIS	<60	0.969	0.005027	0.929, 0.967	79.5
		≥60	0.960	0.007158	0.917, 0.953	77.5
ROC	Ai	<60	0.943	0.005514	0.852, 0.923	71.5
		≥60	0.926	0.007846	0.863, 0.922	69.5
	BIS	<60	0.937	0.006133	0.862, 0.942	70.5
		≥60	0.930	0.007623	0.869, 0.929	69.5

AUC, Area under the curve; SE, Standard error; CI, Confidence interval; Cutoff, Optimal cutoff value.