National and state trends in quality of care for acute myocardial infarction between 1994-1995 and 1998-1999: the medicare health care quality improvement program.

Abstract

During this 4-year period, quality of care for AMI improved, but substantial variation was observed at both time points. While meaningful population-based improvement has been achieved, ample opportunities for improvement exist. Further work is required to elucidate the strategies associated with improvements in quality of care.