title: Hepatitis C (chronic).
abstract: BACKGROUND
  60-85% of people infected with hepatitis C virus will go on to develop chronic hepatitis C, which is now believed to affect 3% of the world's population.
  
  
  METHODS
  We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of interventions in treatment-naïve people with chronic infection, but without liver decompensation? What are the effects of interventions in people with chronic infection, but without liver decompensation, who have not responded to interferon treatment? What are the effects of interventions in people with chronic infection, but without liver decompensation, who relapse after interferon treatment? What are the effects of interventions in people with chronic hepatitis C infection, who also have HIV? We searched: Medline, Embase, The Cochrane Library and other important databases up to May 2006 (Clinical Evidence reviews are updated periodically, please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).
  
  
  RESULTS
  We found 24 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions.
  
  
  CONCLUSIONS
  In this systematic review we present information relating to the effectiveness and safety of the following interventions: interferon monotherapy, interferon alfa plus ribavirin, and peginterferon monotherapy or with ribavirin.
authors.affiliation: Department of Gastroenterology, Chelsea and Westminster Hospital, London, UK.
authors.forename: Abdul
authors.initials: A
authors.lastname: Mohsen
authors.forename: Suzanne
authors.initials: S
authors.lastname: Norris
mesh_terms: D006526:Hepatitis C; D014481:United States; D014486:United States Food and Drug Administration