. 2005 Jan;43(1):186–191. doi: 10.1128/JCM.43.1.186-191.2005

TABLE 3.

Viremia at different time points after IFN therapy as a predictor of treatment response

Negativity and time	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
HCV core Ag
Day 1	100	85.0	40.0	100	86.4
Day 7	57.1	93.3	80.0	82.4	81.8
Day 14	47.6	100	100	67.6	75.0
HCV RNA
Day 1	0	77.3	0	100	77.3
Day 7	100	87.2	50.0	100^a	88.6
Day 14	76.9	100	100	91.2^a	93.2^a

P < 0.05.