Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT 3-armed trial	909 people with H pylori infection and duodenal ulcer	Adverse effects 5.0% with 7-day treatment with proton pump inhibitor-based triple regimen 4.6% with 14-day treatment with proton pump inhibitor-based triple regimen Absolute numbers not reported	P = 0.80		Not significant
RCT	598 people with H pylori infection and peptic ulcer disease	Adverse effects 9.6% with 7-day treatment with proton pump inhibitor-based triple regimen 9.9% with 14-day treatment with proton pump inhibitor-based triple regimen Absolute numbers not reported	P = 0.88		Not significant
RCT	486 people with H pylori infection and dyspepsia having amoxicillin- or metronidazole-based triple eradication therapy	Adverse effects with 7-day treatment with 14-day treatment	Significance not assessed