For children younger than 5 years, the use of the international reference by the WHO published in 2006 is recommended, classifying them as: at risk for overweight
(z score + 1 < BMI
≤
z score + 2), overweight (z score + 2 < BMI
≤
z score + 3), and obesity (BMI > z score + 3). For children
aged 5 to 19 years, the use of the reference published by
the WHO in 2007 is recommended, considering the following
categories: overweight (z score + 1 < BMI
≤
z score + 2),
obesity (z score + 2 < BMI
≤
z score + 3), and severe obesity
(BMI > z score + 3).