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Burden of eating disorders in 5–13-year-old children in Australia

Sloane Madden, Anne Morris, Yvonne A Zurynski, Michael Kohn and Elizabeth J Elliot
Med J Aust 2009; 190 (8): 410-414.

Summary

Objective: To collect nationally representative epidemiological data on early-onset eating disorders (EOEDs) in children.

Design: Prospective, active surveillance using the Australian Paediatric Surveillance Unit with key informant design.

Setting: Child health specialists in Australia (July 2002 to June 2005).

Patients: Incident cases of EOEDs in children aged 5–13 years.

Main outcome measures: Disease rates, demographic characteristics, clinical features and complications, hospitalisation, psychological comorbidity, and concordance of clinical features with Diagnostic and statistical manual of mental disorders, fourth edition (DSM-IV) criteria.

Results: We identified 101 children aged 5–13 years with EOEDs (median age, 12.2 years; range, 5.5–13.9 years), of whom one in four were boys. Most were hospitalised (78%), and the mean duration of hospitalisation was 24.7 days (range, 1–75 days). More than 70% of inpatients were admitted to specialised eating disorder units in paediatric teaching hospitals. Among inpatients, 37% met DSM-IV diagnostic criteria for anorexia nervosa; although 61% had life-threatening complications of malnutrition, only 51% met weight criteria. Psychological symptoms were similar to those in adults with anorexia nervosa: 67% of inpatients met both psychological diagnostic criteria for anorexia nervosa (fear of weight gain/fatness and misperception of body shape). Of 19 postmenarchal girls, 18 had secondary amenorrhoea. Nasogastric feeding was used in 58% of inpatients, and 34% received psychotropic medications.

Conclusions: This is the first prospective national study of EOEDs. It demonstrates the limitations of applying DSM-IV diagnostic criteria for anorexia nervosa to young children; the high proportion of boys affected by EOEDs; and the significant psychological comorbidity and high frequency of hospitalisation associated with EOEDs. Potentially life-threatening medical complications are common at presentation, suggesting possible missed diagnoses and a need for education of health professionals. The study underlines the severity of EOEDs and the need for joint medical and psychiatric specialist management.

  • Sloane Madden1
  • Anne Morris2
  • Yvonne A Zurynski3
  • Michael Kohn1
  • Elizabeth J Elliot2

  • 1 Children’s Hospital at Westmead, Sydney, NSW.
  • 2 Discipline of Paediatrics and Child Health, University of Sydney, Sydney, NSW.
  • 3 Australian Paediatric Surveillance Unit, Sydney, NSW.

Correspondence: sloanem@chw.edu.au

Acknowledgements: 

We thank all the child health specialists who participated in the APSU surveillance, particularly those who reported cases to this study. Elizabeth Elliot was supported by a National Health and Medical Research Council (NHMRC) Practitioner Fellowship (No. 457084). The APSU is a Unit of the Division of Paediatrics and Child Health, Royal Australasian College of Physicians, and is funded by an NHMRC Enabling Grant (No. 402784), the Australian Government Department of Health and Ageing, and the Faculty of Medicine, University of Sydney. We thank Professors Ken Nunn and Bryan Lask for their help in developing the study proposal.

Competing interests:

None identified.

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