Fig. 2

HCV-RNA level after 4 weeks of treatment as a predictor of response. Association of sustained virological response rates after 12 weeks after the end of treatment (SVR 12) of all patients with HCV genotype 1 infection with a level of HCV-RNA either < 12 IU –ml or ≥ 12 IU –ml after 4 weeks of treatment (a) and solely for patients with HCV genotype 1 and cirrhosis (b). n = number of patients. *p < 0.0001, **p = 0.0016