title: Relationship between birth weight and overweight/obesity among students in Florianópolis, Santa Catarina, Brazil: a retrospective cohort study.
abstract: OBJECTIVE
  Being born heavier than 4 kg is associated with current overweight and obesity over the long term. The objective here was to ascertain whether birth weight was related to overweight or obese status, among 7 to 14-year-old schoolchildren, taking into consideration the possible interactions between socioeconomic factors and other biological variables.
  
  
  METHODS
  Retrospective cohort study on a probabilistic sample of 2,696 children and adolescents living in Florianópolis, Santa Catarina, Brazil.
  
  
  METHODS
  The following data were collected: anthropometric (student's weight, height and age; and parents' weight and height), socioeconomic (family income, number of people in house and parental schooling level), birth weight and gestational age. Overweight and obesity were classified using percentiles of body mass index and triceps and subscapular skinfolds. The outcome variables were overweight and obesity and the main explanatory variables were birth weight and birth weight according to gestational age. The control variables were the parents' nutritional status, their schooling level and the per capita family income. Poisson multivariate regressions were carried out.
  
  
  RESULTS
  Higher prevalence of high birth weight was observed among overweight male adolescents (PR = 1.14; 95% CI = 1.02-1.27; P = 0.03), but this was not observed among obese male adolescents. Low birth weight and being born small for gestational age were also not associated with the outcomes. Among overweight and obese children, birth weight was not significantly different from that of normal-weight children.
  
  
  CONCLUSIONS
  No significant association between birth weight and obesity was observed. However, there was a weak but significant association between high birth weight and overweight, among male adolescents.
authors: Universidade Federal da Fronteira Sul, Chapecó, Santa Catarina, Brazil.
authors: Camila Elizandra
authors: CE
authors: Rossi
authors: Department of Public Health, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil.
authors: Francisco de Assis Guedes
authors: Fde A
authors: de Vasconcelos
mesh_terms: D000293:Adolescent; D001724:Birth Weight; D001938:Brazil / Q000453:epidemiology; D002648:Child; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009752:Nutritional Status; D009765:Obesity / Q000453:epidemiology* / Q000209:etiology; D050177:Overweight / Q000453:epidemiology / Q000209:etiology; D010290:Parents; D015995:Prevalence; D012189:Retrospective Studies; D012737:Sex Factors; D012959:Socioeconomic Factors; D013334:Students