Heart attack patients who were prescribed an angiotensin converting enzyme inhibitor or angiotensin receptor blocker at hospital discharge
Heart attack patients > 17 years of age with left ventricular systolic dysfunction and without contraindications to angiotensin converting enzyme inhibitors or angiotensin receptor blockers
Hospital Compare sample rates were downloaded from the CMS web site: http://www.medicare.gov/Download/DownloadDB.asp
Hospital population weights were computed based on estimates imputed from the denominators for Hospital Compare readmissions. Hospital referral region (HRR) rates were computed as the weighted average of the hospital sample rates within the HRR using the population weights.
State rates were computed as weighted averages of the hospital sample rates within the state.