title: Overweight, weight concerns, and bulimic behaviors among girls and boys.
abstract: OBJECTIVE
  To assess the prevalence rates and correlates of overweight, concern with weight, and bulimic behaviors.
  
  
  METHODS
  A survey was completed by a population-based sample of 16,114 boys and girls aged 9 to 14 years.
  
  
  RESULTS
  Although fewer girls (19%) than boys (26%) were overweight, more girls (25% versus 22%) perceived themselves as overweight (p < .001). The proportion of girls reporting trying to lose weight increased with age (p < .001). The prevalence of binge eating at least monthly increased with age among the girls, but remained stable among the boys. The prevalence of purging was low (< or = 1%) and comparable between genders until age 13. Among the 13- and 14-year-olds, girls were significantly more likely than boys to report using laxatives or vomiting to control weight (p < or = .001). Purging was independently positively associated with stage of pubertal development (girls: odds ratio [OR] = 2.1, 95% confidence interval [CI] 1.6-2.7; boys: OR = 1.5, 95% CI 1.0-2.2) and overweight (girls: OR = 1.9, 95% CI 1.2-3.0; boys: OR = 2.7, 95% CI 1.4-5.1).
  
  
  CONCLUSIONS
  Misperception of being overweight and concern with weight were common. Purging was a very rare behavior, but increased with pubertal development. Among the girls, the prevalence increased sharply around the onset of adolescence.
authors.affiliation: Channing Laboratory, Department of Medicine, Harvard Medical School, Boston, USA. Alison.Field@channing.harvard.edu
authors.forename: A E
authors.initials: AE
authors.lastname: Field
authors.forename: C A
authors.initials: CA
authors.lastname: Camargo
authors.forename: C B
authors.initials: CB
authors.lastname: Taylor
authors.forename: C S
authors.initials: CS
authors.lastname: Berkey
authors.forename: A L
authors.initials: AL
authors.lastname: Frazier
authors.forename: M W
authors.initials: MW
authors.lastname: Gillman
authors.forename: G A
authors.initials: GA
authors.lastname: Colditz
mesh_terms: D000293:Adolescent; D001828:Body Image; D002032:Bulimia / Q000453:epidemiology*; D002648:Child; D002657:Child Development; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D009765:Obesity / Q000453:epidemiology*; D015995:Prevalence; D013223:Statistics as Topic; D014481:United States / Q000453:epidemiology