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[Use of social marketing to increase water consumption among school-age children in Mexico City].

OBJECTIVE
To increase water consumption in school children in Mexico City through a social marketing intervention.


MATERIALS AND METHODS
Cluster quasi-experimental design. Intervention of three months in schools, including water provision and designed based on social marketing. Reported changes in attitude, knowledge and behavior were compared pre and post intervention.


RESULTS
Children of the intervention group (n=116) increased in 38% (171 ml) water consumption during school time, control group (n=167) decreased its consumption in 21% (140 ml) (p<0.05), according to their reported consumption. In a sub-sample reported consumption of sweetened beverages decreased 437 ml in the IG and 267 ml in the CG (p<0.05).


CONCLUSION
Social marketing and environmental modifications were effective on increasing water consumption among children, strategy that might contribute to mitigate childhood obesity.