The direct health care costs of obesity in the United States.
D B Allison,
R Zannolli and
K M Narayan
Obesity Research Center, St. Luke's/Roosevelt Hospital, Columbia University College of Physicians and Surgeons, New York, NY 10025, USA. dba8@columbia.edu
OBJECTIVES: Recent estimates suggest that obesity accounts for5.7% of US total direct health care costs, but these estimateshave not accounted for the increased death rate among obesepeople. This article examines whether the estimated direct healthcare costs attributable to obesity are offset by the increasedmortality rate among obese individuals. METHODS: Data on deathrates, relative risks of death with obesity, and health carecosts at different ages were used to estimate direct healthcare costs of obesity from 20 to 85 years of age with and withoutaccounting for increased death rates associated with obesity.Sensitivity analyses used different values of relative riskof death, given obesity, and allowed the relative costs dueto obesity per unit of time to vary with age. RESULTS: Directhealth care costs from 20 to 85 years of age were estimatedto be approximately 25% lower when differential mortality wastaken into account. Sensitivity analyses suggested that directhealth care costs of obesity are unlikely to exceed 4.32% orto be lower than 0.89%. CONCLUSIONS: Increased mortality amongobese people should be accounted for in order not to overestimatehealth care costs.
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