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Risk factors for anorexia nervosa: A national cohort study
Author(s) -
Lindberg Lene,
Hjern Anders
Publication year - 2003
Publication title -
international journal of eating disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.785
H-Index - 138
eISSN - 1098-108X
pISSN - 0276-3478
DOI - 10.1002/eat.10221
Subject(s) - anorexia nervosa , psychosocial , psychology , risk factor , context (archaeology) , etiology , cohort , population , cohort study , psychiatry , medicine , pediatrics , eating disorders , environmental health , paleontology , biology
Abstract Objective To identify possible risk factors for anorexia nervosa through national registers. Method The study includes the entire Swedish population of 989,871 individuals born between 1973 and 1982. Patients with anorexia nervosa were identified through the Swedish Hospital Discharge Register from November 1990 to December 1999. Information about sociodemographic, perinatal, and psychosocial variables was obtained from different national registers. Attributable risk (AR) was calculated for potential risk factors. Results Females had the highest AR for hospital admission because of anorexia nervosa (89.2%). Another important risk factor was having parents born in northern, central, or eastern Europe (AR: 49.3%). Psychosocial risk factors also were associated with an increased risk for anorexia nervosa (AR: 7.6%), whereas perinatal complications had an AR of only 3.6%. Discussion The most important risk factors were related to the sociocultural context of the individual, thus supporting hypotheses of a sociocultural etiology of anorexia nervosa. © 2003 by Wiley Periodicals, Inc. Int J Eat Disord 34: 397–408, 2003.