Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Withdrawal because of adverse effects
Systematic review	710 people with HCV (any genotype) and HIV 2 RCTs in this analysis	Proportion of people stopping treatment because of adverse effects with peginterferon plus ribavirin with peginterferon plus placebo Absolute results not reported	OR 0.90 95% CI 0.61 to 1.34 P = 0.61 One RCT identified by the review was reported as only an abstract		Not significant