title: [Factors Associated with Overweight and Obesity in Schoolchildren from 8 to 9 Years Old. Barcelona, Spain].
abstract: OBJECTIVE
  Childhood overweight and obesity have increased progressively in the last decades, especially in countries of Southern Europe. The aim of this study was to identify the prevalence of overweight, obesity and its determinants in schoolchildren between 8-9 years old from Barcelona.
  
  
  METHODS
  Cross-sectional study of a representative sample of 3,262 schoolchildren in 2011. Body Mass Index (BMI) was calculated following the criteria established by the World Health Organization (z-scores). Variables on eating behaviour, physical activity and use of new technologies were studied through 2 questionnaires. Logistic regression models were adjusted, obtaining adjusted odds ratio and their confidence intervals (95%).
  
  
  RESULTS
  The prevalence of overweight was 24.0% and 12.7% for obesity. Obesity was significantly higher in boys than in girls (14.8% vs 10.8%.). No statistically significant differences were observed in the compliance of recommendations of physical activity practice and use of new technologies according to BMI. Factors associated with obesity in boys were to attend a school located in a neighbourhood of disadvantaged socio-economic status [ORa=1.88 (1.35-2.63)], to belong to an immigrant family [ORa=1.57 (1.12-2.20)], to do not eat at school [ORa=1.76 (1.20-2.59)] and to have some meal alone [ORa=1.95 (1.27-3.00)]. In girls associated factors were to belong to a single-parent family [ORa=1.58 (1.06-2.34)] and to an immigrant family [ORa=1.53 (1.07-2.18)].
  
  
  CONCLUSIONS
  The prevalence of childhood obesity in Barcelona is high. It is more common in boys, being the social determinants most relevant associated factors.
authors.affiliation: Agència de Salut Pública de Barcelona (ASPB). Barcelona. España.|CIBER de Epidemiología y Salud Pública (CIBERESP). Madrid. España.|Institut d´Investigació Biomèdica Sant Pau (IIB St. Pau). Barcelona, España.|Universitat Pompeu Fabra (UPF). Departament de Ciències Experimentals i de la Salut. Barcelona, España.
authors.forename: Francesca
authors.initials: F
authors.lastname: Sánchez-Martínez
authors.affiliation: Agència de Salut Pública de Barcelona (ASPB). Barcelona. España.
authors.forename: Peter
authors.initials: P
authors.lastname: Torres Capcha
authors.affiliation: Agència de Salut Pública de Barcelona (ASPB). Barcelona. España.|CIBER de Epidemiología y Salud Pública (CIBERESP). Madrid. España.|Institut d´Investigació Biomèdica Sant Pau (IIB St. Pau). Barcelona, España.
authors.forename: Gemma
authors.initials: G
authors.lastname: Serral Cano
authors.affiliation: Promoció i Desenvolupament Social (PDS). Barcelona. España.
authors.forename: Sara
authors.initials: S
authors.lastname: Valmayor Safont
authors.affiliation: Departament de Salut. Generalitat de Catalunya. Barcelona. España.
authors.forename: Conxa
authors.initials: C
authors.lastname: Castell Abat
authors.affiliation: Agència de Salut Pública de Barcelona (ASPB). Barcelona. España.|CIBER de Epidemiología y Salud Pública (CIBERESP). Madrid. España.|Institut d´Investigació Biomèdica Sant Pau (IIB St. Pau). Barcelona, España.
authors.forename: Carles
authors.initials: C
authors.lastname: Ariza Cardenal
mesh_terms: D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000209:etiology; D016017:Odds Ratio; D050177:Overweight / Q000453:epidemiology / Q000209:etiology*; D015995:Prevalence; D012307:Risk Factors; D012959:Socioeconomic Factors; D013030:Spain / Q000453:epidemiology
keywords: Body Mass Index; Childhood Obesity; Epidemiologic Factors; Logistic Regressions; Overweight; Prevalence; Spain