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Med Care 53:317-323.
Johns Hopkins University, Baltimore, MD, USA
BACKGROUND: With the goal of improving clinical efficiency and effectiveness, programs to enhance care coordination are a major focus of health care reform.
OBJECTIVE: To examine whether “care density”–a claims-based measure of patient sharing by office-based physicians–is associated with measures of quality. Care density is a proxy measure that may reflect how frequently a patient’s doctors collaborate.
RESEARCH DESIGN: Cohort study using administrative databases from 3 large commercial insurance plans.
SUBJECTS: A total of 1.7 million adult patients; 31,675 with congestive heart failure, 78,530 with chronic obstructive pulmonary disease, and 240,378 with diabetes.
MEASURES: Care density was assessed in 2008. Prevention Quality Indicators (PQIs), 30-day readmissions, and Healthcare Effectiveness Data and Information Set quality indicators were measured in the following year.
RESULTS: Among all patients, we found that patients with the highest care density density–indicating high levels of patient sharing among their office-based physicians–had significantly lower rates of adverse events measured as PQIs compared with patients with low-care density (odds ratio=0.88; 95% confidence interval, 0.85-0.92). A significant association between care density and PQIs was also observed for patients with diabetes mellitus but not congestive heart failure or chronic obstructive pulmonary disease. Diabetic patients with higher care density scores had significantly lower odds of 30-day readmissions (odds ratio=0.68, 95% confidence interval, 0.48-0.97). Significant associations were observed between care density and Healthcare Effectiveness Data and Information Set measures although not always in the expected direction.
CONCLUSION: In some settings, patients whose doctors share more patients had lower odds of adverse events and 30-day readmissions.
PMID: 25719430
PMCID: PMC4384684
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