title: Significant weight gains in a clinical sample of obese children and adolescents between 1985 and 1995.
abstract: OBJECTIVE
  Within the past decades prevalence rates for obesity among children and adolescents have increased in different populations. The hypothesis of this study is that the degree of adiposity in clinical study cohorts of extremely obese children and adolescents increased within the past decade.
  
  
  METHODS
  In six different study cohorts of the time period from 1985-1995 body mass indices (BMIs) of obese children and adolescents who were treated as inpatients at a specialized children's hospital were evaluated. For this purpose body heights, body weights, ages and sex of all inpatients of three referring agencies were retrospectively assessed biannually.
  
  
  RESULTS
  In these six cohorts a significant BMI-increase from 1985-1995 of 1.9 kg/m2 (P < 0.0001) for constant sex, age and referring agencies was found: Comparisons of the quartiles and the ninth decline in both sexes did not show any systematic increase at the first quartile. In contrast, BMI-increases at the ninth decile were approximately 5 kg/m2 for males and 2.5 kg/m2 for females.
  
  
  CONCLUSIONS
  Within the decade studied a significant BMI-increase was detectable in this clinical population. This effect is especially discernible in the most extreme weight groups and in males.
authors.affiliation: Department of Child and Adolescent Psychiatry, University of Marburg, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Barth
authors.forename: A
authors.initials: A
authors.lastname: Ziegler
authors.forename: G W
authors.initials: GW
authors.lastname: Himmelmann
authors.forename: H
authors.initials: H
authors.lastname: Coners
authors.forename: M
authors.initials: M
authors.lastname: Wabitsch
authors.forename: K
authors.initials: K
authors.lastname: Hennighausen
authors.forename: H
authors.initials: H
authors.lastname: Mayer
authors.forename: H
authors.initials: H
authors.lastname: Remschmidt
authors.forename: H
authors.initials: H
authors.lastname: Schäfer
authors.forename: J
authors.initials: J
authors.lastname: Hebebrand
mesh_terms: D000293:Adolescent; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D002648:Child; D015331:Cohort Studies; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D016014:Linear Models; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000503:physiopathology*; D012189:Retrospective Studies; D012737:Sex Factors; D015430:Weight Gain