Objective:

To quantify changes in overweight and obesity and determine their association with sociodemographic characteristics in Mexican schoolchildren from public schools between 2015 and 2018.

Materials and methods:

Cross-sectional comparative study. The data of children between 6 an 12 years old was obtained from the National Register of Weight and Height (RNPT) during four years: 2015 trough 2019. Odds ratios (OR) and adjusted prevalences were estimated using generalized ordinal logistic regression.

Results:

A rough total of 6.5 million of children from 59 724 schools were studied. The OR’s were positive for overweight and obesity (OW+OB) in male gender, urban locality and low marginalization (p<0.001). The greater adjusted probability of overweight and obesity found in 2016 (p<0.001). The country’s south region shown constant and significative increases in obesity probabilities.

Conclusion:

The RNPT allows a real time detection of the various risk characteristics involved in overweight and obesity development in the country elementary schools.

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