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01-03-2011 | Empirical Research | Uitgave 3/2011

Journal of Youth and Adolescence 3/2011

A Multi-Level Examination of the Association Between Older Social Models in the School Environment and Overweight and Obesity Among Younger Students

Tijdschrift:
Journal of Youth and Adolescence > Uitgave 3/2011
Auteurs:
Scott T. Leatherdale, Sophia Papadakis

Abstract

Few studies have examined how school characteristics are associated with obesity. The purpose of this study was to examine the student- and school-level characteristics associated with being overweight and obese among 12,049 students in grades 9 and 10 (junior students) attending 76 secondary schools in Ontario, Canada. The sample was 49.2% female and the average age was 14.7 years. Overall, 15.0% of the sample was considered overweight and 6.3% of the sample was considered obese. Multi-level regression analysis revealed significant between-school random variation for the likelihood of a junior student (grade 9 or 10) being overweight or obese. For each 1% increase in the prevalence of obese senior students (grade 11 and 12) at a school, the odds of a junior student at that school being overweight or obese increased significantly. Important student-level characteristics included physical activity, screen time sedentary behaviour (e.g., watching television), participation in varsity sports and gender. Future research should evaluate if the optimal population level impact for school-based obesity prevention programming might be achieved by targeting the schools that are putting students at the greatest risk.

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