Controlled and extended release metoprolol (Met) v placebo for symptomatic chronic heart failure (HF)‡

Outcomes at mean 1 yearMetPlaceboRRR (95% CI)NNT (CI)
‡Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article.
All cause death or hospital admission32%38%16% (9 to 23)17 (12 to 32)
Admission to hospital for worsening HF10%15%32% (19 to 42)22 (15 to 39)