Readmission and mortality in patients ≥70？years with acute myocardial infarction or heart failure in the Netherlands: a？retrospective cohort study of incidences and changes in risk factors over time

To determine the risk of first unplanned all-cause readmission and mortality of patients ≥70 years with acute myocardial infarction (AMI) or heart failure (HF) and to explore which effects of baseline risk factors vary over time