More data, better data or improved evidence translation: what will improve cardiovascular outcomes?

More data, better data or improved evidence translation: what will improve cardiovascular outcomes? As countries must focus more on the value of and access to health services over effectiveness alone, we argue that data on key aspects of interventions are predominantly missing from the current evidence-base. We examine this need in relation to secondary prevention of the most burdensome disease in the world: coronary heart disease and consider the wider forms of evidence about interventions needed by professionals, systems and governments to promote effective, accessible and efficient chronic disease management.