Table 1. Study subjects grouping.

Study groups	Anti-HCV IgG antibodies	HCV SRT-PCR	HCV PBMCs PCR	Cases (n = 401)
				Naïve (n = 177)	Experienced (n = 224)
Group I (n = 30)	Negative	Negative	TBD	30	0
Group II (n = 63)	Positive	Positive	TBD	63	0
Group III (n = 93)	Positive	Negative	Positive	35	58
Group IV (n = 215)	Positive	Negative	TBD	49	166

Abbreviation: TBD, to be determined.