The impact of the COVID-19 pandemic on administrative eating disorder prevalence in the outpatient sector and on severity of anorexia nervosa.

Tam, Friederike I; Ochmann, Richard; Marschall, Jörg; Leschzinski, Henri; Seidel, Maria; Klink, Linda; Föcker, Manuel; Bühren, Katharina; Dahmen, Brigitte; Jaite, Charlotte; Herpertz-Dahlmann, Beate; Seitz, Jochen; Gilsbach, Susanne; Correll, Christoph U; Müller, Antonia E; Hebebrand, Johannes; Bell, Rebecca; Legenbauer, Tanja; Holtmann, Martin; Becker, Katja; ... (2024). The impact of the COVID-19 pandemic on administrative eating disorder prevalence in the outpatient sector and on severity of anorexia nervosa. (In Press). European child & adolescent psychiatry Springer 10.1007/s00787-024-02527-2

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The COVID-19 pandemic appears to have had a considerable impact on the mental health of children and adolescents, particularly regarding eating disorders. However, it remains unclear whether the pandemic affected only the frequency or also the severity of eating disorders. We examined potential pandemic-related changes in the administrative prevalence of eating disorders in the outpatient sector compared with other mental disorders using German statutory health insurance data for the age group 10 to 16 years. We also examined disorder severity of anorexia nervosa using data from the multicenter German Registry of Children and Adolescents with Anorexia Nervosa in the same age group. Our results showed a marked increase in the administrative prevalence of eating disorders (based on documented diagnoses) in the outpatient sector among girls but not among boys. A similar pattern was found for internalizing disorders, whereas the administrative prevalences of externalizing disorders decreased. Regarding the severity of anorexia nervosa among inpatients, we found no pandemic-related changes in body mass index standard deviation score at admission, body weight loss before admission, psychiatric comorbidities and psychopharmacological medication. Given the administrative prevalence increase in the outpatient sector, the lack of impact of the pandemic on the inpatient sector may also be partly due to a shift in healthcare utilization towards outpatient services during the pandemic. Thus, the higher number of children and adolescents requiring specialized and timely outpatient care may be a major concern under pandemic conditions.

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