Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Heart failure-specific re-admission to hospital
[30] Systematic review	12,763 people with left ventricular dysfunction or heart failure of mean duration 35 months 5 RCTs in this analysis	Proportion of people admitted to hospital for heart failure causes 876/6391 (14%) with ACE inhibitors 1202/6372 (19%) with placebo	OR 0.67 95% CI 0.61 to 0.74 See further information on studies for details of relative benefits of ACE inhibitors	Small effect size	ACE inhibitors
[30] Systematic review	5966 people at 1 year post-infarction 3 RCTs in this analysis	Proportion of people admitted to hospital for heart failure causes 355/2995 (12%) with ACE inhibitors 460/2971 (16%) with placebo	OR 0.73 95% CI 0.63 to 0.85 See further information on studies for details of relative benefits of ACE inhibitors	Small effect size	ACE inhibitors