title: Risk of overweight and obesity in preschoolers attending private and philanthropic schools.
abstract: OBJECTIVE
  To assess the risk prevalence of overweight and obesity in children enrolled in private and philanthropic preschools in the State of São Paulo.
  
  
  METHODS
  Comparison of two cross sectional studies with children enrolled in private preschools (PPS) or philanthropic (PHP) of the São Paulo Metropolitan Region. Both surveys evaluated the children's environment. To determine the risk of overweight, excess weight and obesity, body mass index (BMI) values were transformed into z scores (according to the World Health Organization - 2006 and 2007).
  
  
  RESULTS
  The risk prevalence of overweight (≥ 1 BMIz < 2) in PPS was 21.9% and 24.6% in PHP, with PR = 1.12 (95% CI: 0.96-1.32), without statistical difference. Considering the children with overweight or obesity, (BMIz ≥ 2) the prevalence in PPS was 14.3% and in PHP was 9.0%, with PR = 1.54 (95% CI: 1.23-1.93), p = 0.0002. Overweight and obesity prevalence in males in PPS was 16.4% (n = 409) and in PHP, 11.1% (n = 829), PR = 1.48 (95% CI: 1.10-1.98) and in females it was 12.5% (n = 400) in the PPS and 6.6% (n = 698) in PHP, corresponding to PR = 1.90 (95% CI: 1.30-2.78), both significant differences.
  
  
  CONCLUSIONS
  Both groups showed a similar and very high prevalence of weight excess. However, overweight and obesity showed a higher prevalence in children from private preschools. This indicates that even though a better socioeconomic level is still a risk factor for overweight and obesity in preschoolers, the same does not seem to occur when analyzing the risk of overweight.
authors.affiliation: Department of Mother and Child Healthcare, Faculty of Public Health, Universidade de São Paulo, São Paulo, SP. 　vivianesimon@hotmail.com
authors.forename: Viviane Gabriela
authors.initials: VG
authors.lastname: Nascimento
authors.forename: Denise de Oliveira
authors.initials: Dde O
authors.lastname: Schoeps
authors.forename: Sônia Buongermino de
authors.initials: SB
authors.lastname: Souza
authors.forename: José Maria Pacheco de
authors.initials: JM
authors.lastname: Souza
authors.forename: Claudio
authors.initials: C
authors.lastname: Leone
mesh_terms: D015992:Body Mass Index; D001938:Brazil / Q000453:epidemiology; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000453:epidemiology*; D050177:Overweight / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors; D012959:Socioeconomic Factors; D014505:Urban Population