School population-based nutritional status classified by urban geografical region, from Sorocab city, SP, Brazil

O objetivo deste estudo populacional foi verificar as prevalências do estado nutricional: baixo peso, sobrepeso e obesidade em escolares da cidade de Sorocaba/SP, por zona geográfica no município. Foram avaliadas crianças de 7 a 10 anos de idade, num total de 11290 indivíduos, pertencentes à rede pública municipal. Para a determinação de baixo peso, sobrepeso e obesidade foram utilizados, respectivamente, os percentis =5, =85 e =95 do IMC por idade e os valores Z do IMC e estatura, para sexo e idade, propostos pelos Centers for Disease Control and Prevention - CDC-2000. As prevalências totais foram: 5,6% de baixo peso, 12,2% de sobrepeso e 10,1% de obesidade. A prevalência por sexo indicou para os meninos 5,3%, 12,1% e 11,9% e para as meninas 5,9%, 12,3% e 8,2%, respectivamente, baixo peso, sobrepeso e obesidade. Por zona geográfica encontrou-se no Centro: 3,4% de baixo peso, 17,2% de sobrepeso e 15,1% de obesidade; no Sul: 4,2%, 15,4% e 11,2%; no Leste: 3,2%, 14,7% e 12,7%; no Nordeste: 4,3%, 11,9% e 10,7%; no Norte 5,8%, 12% e 9,1%; no Noroeste: 7,5%, 11% e 9,1%; no Oeste 6,0%, 11% e 9,2%, respectivamente, valores de baixo peso, sobrepeso e obesidade. Concluímos que há diferenças significantes entre as zonas de Sorocaba (p=0,000), que o centro e o leste apresentam as maiores concentrações de crianças com excesso de peso, as regiões noroeste e oeste, as maiores concentrações de baixo peso e que há mais obesidade nos meninosThe aim of this population-based study was to estimate the prevalence of underweight, overweight and obesity from Sorocaba city, Brazil, public schools, by urban geographical region. Was avaluated 11,290 children aged 7 to 10 years old. Determination of underweight, overweight and obesity was obtained by =5th, =85th and =95th BMI percentiles, respectively, and the BMI and height Z-score values for sex and age, proposed by CDC in 2000. The overall prevalence rates of underweight, overweight and obesity were 5.6%, 12.2% and 10.1%, respectively. The prevalence by sex were 5.3%, 12.1% and 11.9%, underweight, overweight and obesity, respectively, for boys and 5.9%, 12.3% and 8.2%, underweight, overweight and obesity, respectively, for girls. The rates by urban geographical region showed that in downtown 3.4% of the children are in underweight, 17.2% are in overweight, and 15.1% are in obesity; south region showed 4.2, 15.4, and 11.2; east region showed 3.2, 14.7, and 12.7; northeast region showed 4.3, 11.9, and 10.7; north region showed 5.8, 12, and 9.1; northwest region showed 7.5, 11, and 9.1; and the west region showed 6, 11, and 9.2 percent for underweight, overweight, and obesity, respectively. We concluded that Sorocaba city have different results between its regions (p=0,000), that the downtown and east regions have significantly concentration of overweight, that the northwest and west have significantly concentration of underweight and have more obesity in the boys