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DOI: 10.2337/dc05-1709
© 2006 by the American Diabetes Association
Epidemiology/Health Services/Psychosocial Research |
An Evaluation of Cost Sharing to Finance a Diet and Physical Activity Intervention to Prevent Diabetes
1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
2 RTI International, Research Triangle Park, North Carolina
3 Centers for Disease Control and Prevention, Atlanta, Georgia
4 MedStar Research Institute, Washington, DC
5 Departments of Internal Medicine and Epidemiology and the Michigan Diabetes Research and Training Center, University of Michigan Health System, Ann Arbor, Michigan
Address correspondence and reprint requests to Ronald T. Ackermann, MD, MPH, 250 University Blvd.,Suite 122, Indianapolis, IN 46202. E-mail: rtackerm{at}iupui.edu
OBJECTIVE—The Diabetes Prevention Program (DPP) lifestyle intervention is a cost-effective strategy to prevent type 2 diabetes, but it is unclear how this intervention could be financed. We explored whether this intervention could be offered in a way that allows return on investment for private health insurers while remaining attractive for consumers, employers, and Medicare.
RESEARCH DESIGN AND METHODS—We used the DPP and other published reports to build a Markov simulation model to estimate the lifetime progression of disease, costs, and quality of life for adults with impaired glucose tolerance. The model assumed a health-payer perspective and compared DPP lifestyle and placebo interventions. Primary outcomes included cumulative incidence of diabetes, direct medical costs, quality-adjusted life-years (QALYs), and cost per QALY gained.
RESULTS—Compared with placebo, providing the lifestyle intervention at age 50 years could prevent 37% of new cases of diabetes before age 65, at a cost of $1,288 per QALY gained. A private payer could reimburse $655 (24%) of the $2,715 in total discounted intervention costs during the first 3 intervention years and still recover all of these costs in the form of medical costs avoided. If Medicare paid up to $2,136 in intervention costs over the 15-year period before participants reached age 65, it could recover those costs in the form of future medical costs avoided beginning at age 65.
CONCLUSIONS—Cost-sharing strategies to offer the DPP lifestyle intervention for eligible people between ages 50 and 64 could provide financial return on investment for private payers and long-term benefits for Medicare.
Abbreviations: DPP, Diabetes Prevention Program • IGT, impaired glucose tolerance • QALY, quality-adjusted life-year • ROI, return on investment
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