In the first empirical study of the role supplemental insurance coverage might play in Medicare spending growth, researchers at the University of Minnesota School of Public Health and Harvard Medical School found that employer-sponsored and self-purchased supplemental coverage were associated with annual spending growth rates of 7.17 percent and 7.18 percent, respectively, compared to 6.08 percent for beneficiaries without supplemental coverage.

The study, “Supplemental Coverage Associated With More Rapid Spending Growth For Medicare Beneficiaries” examines trends in Medicare spending. The study, which appears in the May issue of Health Affairs, was led by Ezra Golberstein, Ph.D., assistant professor in the University of Minnesota School of Public Health.

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