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Sex- and age-specific incidence of healthcare-register-recorded eating disorders in the complete swedish 1979-2001 birth cohort
Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, USA; Division of Women's Mental Health, McLean Hospital, Belmont, Massachusetts, Boston, Massachusetts, USA; Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA.
Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, USA.
Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, USA.
National Centre for Register-Based Research, Aarhus University, Aarhus, Denmark; CIRRAU-Centre for Integrated Register-Based Research, Aarhus University, Aarhus, Denmark.
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2015 (English)In: International Journal of Eating Disorders, ISSN 0276-3478, E-ISSN 1098-108X, Vol. 48, no 8, p. 1070-81Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: To investigate the sex- and age-specific incidence of healthcare-register-recorded anorexia nervosa (AN) and other eating disorders (OED) in a complete birth cohort, and assess whether incidence varies by diagnostic period and (sub-) birth cohort.

METHOD: We used the actuarial method and Poisson models to examine the incidence of AN and OED from 1987 to 2009 (when individuals were 8-30 years old) for a cohort of 2.3 million individuals (48.7% female) born from 1979 to 2001 in Sweden, identified using Swedish registers.

RESULTS: For both sexes, incidences of AN and OED increased considerably for diagnostic periods after 2000, but differed little by birth cohort. In 2009, AN incidence in the peak age category was 205.9 cases/100,000 persons (95% CI: 178.2, 233.5) for females (14-15 years), versus 12.8 cases/100,000 (95% CI: 5.6, 20.1) for males (12-13 years). OED incidence in the peak age category was 372.1 cases/100,000 (95% CI: 336.4, 407.9) for females (16-17 years), versus 22.2 cases/100,000 (95% CI: 13.3, 31.1) for males (14-15 years).

DISCUSSION: Our finding of an increase in healthcare-register-recorded eating disorders for diagnostic periods after 2000 likely reflects improved detection and expanded register coverage in Sweden. The peak of eating disorder incidence in adolescence, which began unexpectedly early for AN in males, suggests the importance of vigilance for signs of AN in young boys and early primary prevention efforts. Waiting until later could miss critical windows for intervention that could prevent disorders from taking root.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2015. Vol. 48, no 8, p. 1070-81
Keywords [en]
Sweden, anorexia nervosa, eating disorders, epidemiology, incidence, men
National Category
Medical and Health Sciences Psychology Psychiatry
Identifiers
URN: urn:nbn:se:oru:diva-66289DOI: 10.1002/eat.22467ISI: 000367662500002PubMedID: 26769444Scopus ID: 2-s2.0-84954417810OAI: oai:DiVA.org:oru-66289DiVA, id: diva2:1194438
Funder
Swedish Association of Local Authorities and RegionsStockholm County Council
Note

Funding Agencies:

National Institutes of Mental Health and by American Foundation for Suicide Prevention, T32MH076694 

Anorexia Nervosa Genetics Initiative (ANGI) an Initiative of the Klarman Family Foundation 

Global Foundation for Eating Disorders 

Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-04-06Bibliographically approved

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