Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Heart failure-specific re-admission to hospital
[34] Systematic review	2590 people 3 RCTs in this analysis	Proportion of people admitted to hospital for heart failure 230/1340 (17%) with angiotensin II receptor blockers (ARBs) 314/1250 (25%) with placebo	OR 0.64 95% CI 0.53 to 0.78	Small effect size	ARBs