Inpatient Costs and Predictors of Costs in the Psychosomatic Treatment of Anorexia Nervosa

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In German inpatient psychosomatics per diem lump sums will be introduced as reimbursement rates by 2013. It was the aim to calculate total inpatient costs per case for the psychosomatic treatment of patients with anorexia nervosa and to identify cost predictors.


The sample comprised of 127 inpatients. Cost calculation was executed from the hospital's perspective, mainly using microcosting. Medical records provided data on patient characteristics and individual resource use. Two generalized linear models with gamma distribution and log link function were estimated to determine cost predictors by means of demographic data, comorbidities, and body-mass-index at admission.


Inpatient costs amounted to 4,647 €/6,831 US$ per case (standard deviation 3,714 €/5,460 US$).The admission BMI and “Disorders of Adult Personality and Behavior” were significant cost predictors (p < 0.05).


The formation of patient groups within the diagnosis anorexia nervosa should be oriented towards the determined cost predictors. © 2011 by Wiley Periodicals, Inc. (Int J Eat Disord 2012)

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