Application of a Latent Class Analysis to Empirically Define EatingDisorder Phenotypes

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Abstract
The term anorexia nervosa (AN) was first usedto describe a self-starvation syndrome predominantly affecting adolescentgirls in the latter half of the 19th century.1 Approximately100 years later, Russell2 introduced the term bulimia nervosa (BN) to describe women who exhibited recurrentbouts of binge eating and self-induced vomiting. Although most of these womenhad histories of AN, their binge-purge pattern was sustained at normal weight,leading Russell to conclude that BN represented an "ominous variant of anorexianervosa." Anorexia nervosa and BN now represent the formally recognized syndromesin the category of eating disorders in the DSM-IV, TextRevision (DSM-IV-TR)3 and International Classification of Diseases and Related Health Disorders, 10thRevision (ICD-10).4

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