title: [Overweight among adolescents in Oslo].
abstract: BACKGROUND
  Socio-demographic factors affect the prevalence of overweight, and differences in lifestyle could be the cause. Possible consequences of overweight, such as mental health problems may also vary by socio-demographic factors. The aims of the study were to identify overweight and mental health problems by socio-demographic group and lifestyle and a possible association between overweight and mental health.
  
  
  METHODS
  A questionnaire survey (UngHUBRO) was conducted among 10th graders in Oslo in 2000 and 2001. The response rate was 88% (N = 7343). Self-reported height and weight were used to determine overweight/obesity according to international standards. The prevalence of overweight/obesity and mental distress by socio-demographic group was calculated, and associations between the two were adjusted for lifestyle (dietary habits, physical activity and inactivity) by logistic regression.
  
  
  RESULTS
  The prevalence of overweight/obesity was higher among boys (12%) than among girls (7%), and there was an inverse association with the length of parents' education for both genders. The association between overweight/obesity and mental distress was statistically significant for girls. The ethnic differences in overweight/obesity were large, but not statistically significant.
  
  
  CONCLUSIONS
  The prevalence of overweight varied largely between socio-demographic groups. There was an association between mental distress and overweight among girls and there are marked differences in lifestyle between over- and normal weight adolescents.
authors.affiliation: Avdeling for ernaeringsvitenskap, Det medisinske fakultet, Universitetet i Oslo, Postboks 1046 Blindern, 0316 Oslo. nanna.lien@medisin.uio.no
authors.forename: Nanna
authors.initials: N
authors.lastname: Lien
authors.forename: Bernadette N
authors.initials: BN
authors.lastname: Kumar
authors.forename: Lars
authors.initials: L
authors.lastname: Lien
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008019:Life Style; D008297:Male; D001523:Mental Disorders / Q000150:complications / Q000453:epidemiology; D008603:Mental Health; D009664:Norway / Q000453:epidemiology; D009765:Obesity / Q000150:complications / Q000453:epidemiology* / Q000523:psychology; D050177:Overweight; D015995:Prevalence; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires