Beneficiary patients' receipt of 24 process-of-care measures related to primary prevention, secondary prevention, or treatment of 6 medical conditions (acute myocardial infarction, breast cancer, diabetes mellitus, heart failure, pneumonia, and stroke) for which there is strong scientific evidence and professional consensus that the process of care either directly improves outcomes or is a necessary step in a chain of care that does so. The results of the study were that across all states for all measures, the percentage of patients receiving appropriate care in the median state ranged from a high of 95% (avoidance of sublingual nifedipine for patients with acute stroke) to a low of 11% (patients with pneumonia screened for pneumococcal immunization status before discharge). The median performance on an indicator is 69% (patients discharged with heart failure diagnosis who received angiotensin-converting enzyme inhibitors; diabetic patients having an eye examination in the last 2 years). Some states (particularly less populous states and those in the Northeast) consistently ranked high in relative performance while others (particularly more populous states and those in the Southeast) consistently ranked low. These findings indicate substantial opportunities to improve the care delivered to Medicare beneficiaries and urgently invite a partnership among practitioners, hospitals, health plans, and purchasers to achieve that improvement.

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