External validation of EncephalApp Stroop test to screen minimal hepatic encephalopathy patients with nonalcoholic cirrhosis

Table 2 Performance of the EncephalApp Stroop test in the diagnosis of minimal hepatic encephalopathy in nonalcoholic liver cirrhotic patients

Parameters	AUC (95%CI)	Optimal cutoff	Sensitivity	Specificity	Precision, PPV	NPV
Off time, second	0.85 (0.79-0.91)	101.93	0.84	0.77	0.75	0.85
On time, second	0.84 (0.78-0.90)	104.51	0.89	0.71	0.73	0.90
On + off time, second	0.85 (0.80-0.91)	205.86	0.90	0.71	0.72	0.89
On - off time, second	0.54 (0.44-0.63)	14.95	0.45	0.71	0.57	0.61
Total runs of off session	0.61 (0.52-0.69)	6.50	0.38	0.83	0.65	0.62
Total runs of on session	0.57 (0.48-0.65)	5.50	0.66	0.48	0.52	0.63

AUC: Area under the curve; CI: Confidence interval; PPV: Positive predictive value; NPV: Negative predictive value.