Table 4.

Comparisons between psychometric hepatic encephalopathy score and number connection test-A, number connection test-B, and digit symbol test

		Sensitivity	Specificity	AUC	K value
Both of the two tests were abnormal	NCT-A + NCT-B	0.538	0.963	0.751	0.505
	NCT-A + DST	0.077	1.000	0.538	0.078
	NCT-B + DST	0.154	1.000	0.577	0.156
All of the three tests were abnormal	NCT-A + NCT-B+DST	0.077	1.000	0.538	0.078
At least one of the two tests was abnormal	NCT-A/NCT-B	0.923	0.741	0.832	0.661
	NCT-A/DST	0.769	0.963	0.866	0.735
	NCT-B/DST	0.769	0.741	0.755	0.510
At least one of the three tests was abnormal	NCT-A/NCT-B/DST	0.923	0.741	0.832	0.661
At least two of the three tests were abnormal	NCT-A/NCT-B/DST	0.615	0.963	0.789	0.582

PHES: Psychometric hepatic encephalopathy score; NCT-A: Number connection test-A; NCT-B: Number connection test-B; DST: Digit symbol test; AUC: Area under the curve.