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The cost-effectiveness of anorexia nervosa treatment.

OBJECTIVE
Anorexia nervosa (AN) is an expensive-to-treat illness with a high mortality rate. Some health care systems have limited the amount of treatment provided for AN despite the lack of clearly documented efficacy for these limited-intensity approaches. One method that can inform decisions about AN treatment is cost-effectiveness analysis.


METHOD
Cost-modeling analysis was used to estimate the incremental cost-effectiveness of AN treatment. Modeling was chosen given the lack of primary data on costs and outcomes in AN treatment. Data for age of onset, life expectancy, and disease-associated mortality were taken from the literature. The costs of treatment used in the analysis were those in use at the University of Minnesota.


RESULTS
Assuming an approach consisting of inpatient weight restoration, followed by treatment of gradually diminishing intensity (partial hospitalization, then outpatient psychotherapy plus medication management), incremental cost-effectiveness ratios were calculated and compared with a limited intensity, "usual care" model. These assumptions yielded a cost per year of life saved of 30,180 dollars.


DISCUSSION
Relative to many other medical interventions, the comprehensive treatment of AN appears to be quite cost-effective in terms of cost per year of life saved. Such data may have an impact on payer decisions and underscore the serious nature of AN.