表 3. ROC analysis of interferon efficacy according to the serum HBsAg and HBV pgRNA levels in different populations.

不同人群血清HBsAg和HBV pgRNA水平判断干扰素疗效的ROC分析

Group	Index	AUC	95% CI	Optimal cut-off value	Sensitivity/%	Specificity/%	P
AUC: area under thecurve; CI: confidence interval.
Previously treated	HBsAg	0.80	0.7423-0.8615	244.60 IU/mL	77.78	72.39	<0.0001
	HBV pgRNA	0.58	0.4586-0.7024	3955.00 copies/mL	77.78	42.13	0.2606
Initial treatment	HBsAg	0.74	0.6283-0.8604	934.40 IU/mL	100.00	50.85	0.0079
	HBV pgRNA	0.96	0.9042-1.0000	1340.00 copies/mL	94.74	88.89	<0.0001