The PACE-MI Registry Study - Outcomes of Beta-blocker Therapy After Myocardial Infarction (OBTAIN)

The purpose of the PACE-MI (OBTAIN) registry is: * Analyze beta-blocker dose response effect on outcome over two years * Explore gender and minority differences in beta-blocker utilization and outcomes. In patients with Myocardial Infarction (MI) discharged from the hospital, beta-blocker dose will be predictive of survival. Exploratory analyses: Gender and racial effects-gender and race are, similarly, hypothesized to be predictive of post-MI survival. The existence of interactions between gender and beta-blocker effect as well as race and beta-blocker effect will also be evaluated.