A Cochrane review [Abstract] 1 included 14 studies with a total of 657 subjects. Compared with placebo/no intervention, ribavirin had no significant effect on sustained (RD 0%, 95% CI -2% to 3%, 5 studies, n=353) or end of treatment virological response (RD 0% 95% CI -3% to 3%, 10 studies, n=513). Ribavirin had no significant effect on liver-related morbidity plus mortality (RD 0%, 95% CI -2% to 3%, 11 studies, n= 521). Ribavirin significantly improved end of treatment biochemical and histological response but not sustained biochemical response. Further, ribavirin significantly increased the risk of anaemia. Ribavirin was significantly inferior to interferon regarding virological and biochemical response (5 studies).
Comment: The quality of evidence is downgraded by study quality (unclear allocation concealment).
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