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Diabetes Care, Vol 20, Issue 5 735-744, Copyright © 1997 by American Diabetes Association
Model of complications of NIDDM. II. Analysis of the health benefits and cost-effectiveness of treating NIDDM with the goal of normoglycemia
RC Eastman, JC Javitt, WH Herman, EJ Dasbach, C Copley-Merriman, W Maier, F Dong, D Manninen, AS Zbrozek, J Kotsanos, SA Garfield and M Harris
Division of Diabetes, Endocrinology, and Metabolic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892-2560, USA.
OBJECTIVE: To analyze the health benefits and economics of treating NIDDM
with the goal of normoglycemia. RESEARCH DESIGN AND METHODS:
Incidence-based simulation model of NIDDM was used. Hazard rates for
complications were adjusted for glycemia using risk gradients from the
Diabetes Control and Complications Trial. Treatment costs were estimated
from national survey data and clinical trials. Incremental costs and
benefits were expressed in present value dollars (3% discount rate).
Life-years were adjusted for quality of life, yielding quality-adjusted
life-years (QALYs). RESULTS: Comprehensive treatment of NIDDM that
maintains an HbA1c value of 7.2% is predicted to reduce the cumulative
incidence of blindness, end-stage renal disease, and lower-extremity
amputation by 72, 87, and 67%, respectively. Cardiovascular disease risk
increased by 3% (no effect of treating glycemia is assumed). Life
expectancy increased 1.39 years. The cost of treating hyperglycemia
increased by almost twofold, which is partially offset by reductions in the
cost of complications. The estimated incremental cost/QALY gained is
$16,002. Treatment is more cost-effective for those with longer glycemic
exposure (earlier onset of diabetes), minorities, and those with higher
HbA1c under standard care. CONCLUSIONS: The incremental effectiveness of
treating NIDDM with the goal of normoglycemia is estimated to be
approximately $16,000/QALY gained, which is in the range of interventions
that are generally considered cost-effective.

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Copyright © 1997 by the American Diabetes Association.
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