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Previous issue date: 2004-11-01 === Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES === Avaliou-se a prevalência de sobrepeso em adolescentes e sua distribuição segundo varíaveis demográficas, socioeconômicas, comportamentais e biológicas. Foram entrevistados 810 adolescentes entre 10-19 anos, residentes na zona urbana de Pelotas, Rio Grande do Sul, Brasil. O desfecho estudado foi definido de acordo com a Organização Mundial da Saúde (IMC ≥ Percentil 85, segundo idade e sexo conforme a população de referência do I National Health and Nutrition Examination Survey - NHANES I). O processo amostral foi por conglomerados e as análises bruta e ajustada (Regressão de Poisson) levaram em conta o efeito de delineamento. A prevalência de sobrepeso em adolescentes foi de 19,3% (IC95% 16,6 – 22,0) e não houve diferença entre os sexos. Adolescentes pertencentes aos níveis econômicos mais elevados, que realizaram dieta para emagrecer nos três meses anteriores à entrevista, que assistiam quatro horas ou mais de televisão por dia e que realizavam apenas uma ou duas refeições diárias apresentaram maior proporção de sobrepeso. Na análise ajustada, o sobrepeso nos meninos esteve diretamente associado com nível econômico e, nas meninas, com as variáveis dieta para emagrecer, número de horas diárias assistindo televisão e inversamente associado com o número de refeições. === The prevalence of overweight and its association with demographic, socioeconomic, behavioral and biological variables was evaluated. A sample of 810 adolescents (10-19 years) living in the urban area of Pelotas, a southern Brazilian city, was investigated. Overweight was defined as a body mass index ≥the 85th percentile according to sex and age according to I National Health and Nutrition Examination Survey - NHANES I, following the World Health Organization reccomendation for adolescents. A clustering sampling strategy was used, and both the crude and adjusted analyses (Poisson Regression) took this strategy into
account. The prevalence of overweight was 19.3% (CI95% 16.6; 22.0) and was similar by sex. The following groups presented a greater likelihood of being overweight: those classified in the wealthiest socioeconomic groups, those who had dieted to loose weight within the previous 3 months, those who watch 4 or more hours of television per day, and those who have less than 3 regular meals per day. After stratification by gender, high socioeconomic level was related to a greater risk of overweight among boys, and diet to loose weight in the previous 3 months, 4 or more hours of TV viewing per day and less than 3 formal meals per day were risk factors for overweight among girls.
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