Abstract

Background

Body mass index (BMI) at hospital admission in patients with anorexia nervosa (AN) represents a prognostic marker for mortality, chronicity and future body weight. The current study focused on the associations between BMI standard deviation score (BMI-SDS) at admission and reasons for seeking inpatient treatment. Further interest was given to the relationship between premorbid weight and weight at admission, as well as the effect of both weight at referral and reasons for admission on treatment outcome.

Methods

Data ascertained in the German Register of Children and Adolescents with AN were analysed to assess the parental and patient overlap for 23 predefined reasons for admission, using factor analyses and regressions models.

Results

Complete parent-patient data sets were available for 360 patients out of 769. The highest consensus rates between parents and patients were obtained for weight and eating behavior related reasons and hyperactivity. Based on factor analysis, four factors emerged. Premorbid BMI-SDS, age and ‘low body weight’ as stated by patients or parents explained almost 40% of the variance of the BMI-SDS at admission.

Conclusions

Results underscore the relevance of age and premorbid BMI for BMI at admission. Only single reasons for admission explained further variance, with ‘low body weight’ having the largest effect. Approximately 40% of the variance of BMI-SDS was explained. For the first time, the effect of premorbid BMI for BMI at admission was robustly demonstrated in a multicenter study. Of the variance in BMI-SDS at discharge, our model could explain 37%, with reasons for admission having a small effect. Further investigation of the reasons for admission would be worthwhile to improve treatment and prognosis.

Details

Title
Reasons for admission and variance of body weight at referral in female inpatients with anorexia nervosa in Germany
Author
Peters, Triinu  VIAFID ORCID Logo  ; Kolar, David  VIAFID ORCID Logo  ; Föcker, Manuel  VIAFID ORCID Logo  ; Bühren, Katharina; Dahmen, Brigitte  VIAFID ORCID Logo  ; Becker, Katja  VIAFID ORCID Logo  ; Weber, Linda; Correll, Christoph U; Jaite, Charlotte; Egberts, Karin M  VIAFID ORCID Logo  ; Romanos, Marcel  VIAFID ORCID Logo  ; Ehrlich, Stefan  VIAFID ORCID Logo  ; Seidel, Maria  VIAFID ORCID Logo  ; Roessner, Veit  VIAFID ORCID Logo  ; Fleischhaker, Christian; Alexander von Gontard  VIAFID ORCID Logo  ; Hahn, Freia; Huss, Michael; Kaess, Michael; Legenbauer, Tanja  VIAFID ORCID Logo  ; Renner, Tobias J; Schulze, Ulrike M E; Sinzig, Judith; Wessing, Ida  VIAFID ORCID Logo  ; Antony, Gisela  VIAFID ORCID Logo  ; Herpertz-Dahlmann, Beate  VIAFID ORCID Logo  ; Gradl-Dietsch, Gertraud  VIAFID ORCID Logo  ; Hebebrand, Johannes  VIAFID ORCID Logo 
Pages
1-13
Section
Research article
Publication year
2021
Publication date
2021
Publisher
BioMed Central
e-ISSN
1753-2000
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2621061166
Copyright
© 2021. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.