This study sought to compare national and international criteria for assessing the nutritional status of adolescents. A cross-sectional analytical study was conducted in the period from July 2007 to January 2008 with a representative sample comprised of 1256 adolescents from the state of Maranhão. Body mass index (BMI) for age and gender was used to diagnose underweight, normal weight and overweight, using the criteria proposed by Conde and Monteiro and the World Health Organization (WHO). Chi-square, McNemar concordance and Spearman correlation tests were applied. According to the criteria of Conde and Monteiro and the WHO, there were significant differences among the boys with respect to low weight and obesity. It was observed that there was no significant divergence between the two criteria, and a significant positive correlation (0.011) between the two criteria was detected. With this analysis it can be seen that there are many divergences between the criteria used, therefore the best option and the advantage of using one or the other cannot be singled out. However, it should be stressed that the national criterion can also be used more, since there are no significant differences with the criteria advocated by the Ministry of Health of the WHO.
Nutritional status; Adolescents; Body mass index
