[Overweight among children in Navarra (Spain) and its impact on adolescence].

Background And Objective: To estimate the prevalence of excess body fat in a cohort of children aged 2 to 14 years, and calculate the risk of overweight during adolescence when it was present in previous years.

Subjects And Method: This was a retrospective study and review of clinical records including weight, height and body mass index in a cohort of 840 children at ages 2, 3, 4, 6, 8, 10, 12 y 14 years. The excess of body fat was calculated following the International Obesity Task Force criteria and showing the odds ratio of having overweight at age 14 years when it was present in any previous year.