Obesity among children attending elementary public schools in São Paulo, Brazil: a case-control study

Obesity among children attending elementary public schools in São Paulo, Brazil: a case-control study

Author Ribeiro, I. D. Google Scholar
Taddei, Jose Augusto de Aguiar Carrazedo Autor UNIFESP Google Scholar
Colugnati, Fernando Antonio Basile Autor UNIFESP Google Scholar
Institution Pontificia Univ Catolica Parana
Universidade Federal de São Paulo (UNIFESP)
Abstract Objectives: To describe obesity among students of public schools in São Paulo and to identify risk factors for this nutritional and physical activity disorder.Design: Case-control study of obese and non-obese schoolchildren to study risk factors for obesity.Setting: Anthropometric survey including 2519 children attending eight elementary public schools in São Paulo, Brazil.Subjects: Schoolchildren aged 7-10 years, of whom 223 were obese (cases; weight-for-height greater than or equal to two standard deviations (greater than or equal to 2SD) above the median of the National Center for Health Statistics (NCHS) reference population) and 223 were eutrophic (controls; weight-for-height +/-1SD from NCHS median).Measurements: Parents or guardians of the 446 cases and controls were interviewed about the children's eating behaviours; and habits.Results: the prevalence of obesity (weight-for-height greater than or equal to2SD) in the surveyed population was 10.5%. A logistic regression model fitted to the case-control dataset showed that obesity was positively associated with the following factors: birth weight greater than or equal to3500g (odds ratio (OR) 1.83, 95% confidence interval (CI) 1.21-2-78), child's appetite at meals (OR 3.81, 95% CI 2.49-5.83), watching television for 4 h per day or longer (OR 2.07, 95% CI 1.32-3.24), mother's schooling >4 years (OR 1.85, 95% CI 1.25-2.75) and parents' body mass index greater than or equal to30 kg m(-2) (OR 2.50, 95% CI 1.43-4-37).Conclusion: the explanatory multivariate model points to preventive measures that would encourage knowledge of the children and their guardians in relation to a balanced diet and a less sedentary lifestyle, such as reducing television viewing. Schoolchildren with a birth weight of 3500 g or more or whose parents are obese should receive special attention in the prevention of obesity.
Keywords obesity
risk factors
maternal obesity
television viewing
Language English
Date 2003-10-01
Published in Public Health Nutrition. Cambridge: Cambridge Univ Press, v. 6, n. 7, p. 659-663, 2003.
ISSN 1368-9800 (Sherpa/Romeo, impact factor)
Publisher Cambridge Univ Press
Extent 659-663
Origin http://dx.doi.org/10.1079/PHN2003473
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000186204300006
URI http://repositorio.unifesp.br/handle/11600/27418

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