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[Frequency of obesity and overweight among school age children living in southern Chile].

BACKGROUND
The frequency of obesity is increasing steadily in Chile.


AIM
To assess the prevalence of obesity and overweight in children and teenagers living in three southern Chilean cities.


MATERIAL AND METHODS
The database of an evaluation performed in 2006 in schools, was used to obtain weight and height of 32514 subjects aged 12 ± 4 years (48% males). Criteria proposed by the International Obesity Task Force (IOTF) and the Centers for Disease Control (CDC) were used to define obesity and overweight.


RESULTS
According to CDC criteria the prevalence of overweight and obesity was 11.2% and 6.5%, respectively. According to IOTF criteria, the fgures were 13.2 and 4%, respectively. The higher frequency of overweight and obesity was observed among children aged less than eight years.


CONCLUSIONS
There is a high frequency of obesity and overweight in the studied sample.