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标题：Reasons for admission and variance of body weight at referral in female inpatients with anorexia nervosa in Germany
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作者：Triinu Peters ; David Kolar ; Manuel Föcker 等
期刊名称：Child and Adolescent Psychiatry and Mental Health
印刷版ISSN：1753-2000
电子版ISSN：1753-2000
出版年度：2021
卷号：15
DOI：10.1186/s13034-021-00427-w
语种：English
出版社：BioMed Central
摘要：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. Supplementary Information The online version contains supplementary material available at 10.1186/s13034-021-00427-w.
关键词：Anorexia nervosa; Adolescent; Premorbid body weight; Body mass index; Hospital admission; Factor analysis; Treatment seeking behavior