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Prevalence, Patterns, and Predictors: A Statewide Longitudinal Study of Childhood Obesity
Heather Rouse1, Anthony Goudie2, Mallik Rettiganti3
1Assistant Professor, (hlrouse@iastate.edu), Iowa State University, 2360 Palmer, Ames, IA 50011.
The Journal of School Health
|February 12, 2019
Summary
Childhood obesity prevalence increased significantly from kindergarten to eighth grade, with early obesity predicting later weight status. Unique patterns emerged for Hispanic boys and Black girls, highlighting the need for targeted interventions.
Area of Science:
- Pediatric Health
- Public Health Surveillance
- Obesity Research
Background:
- Examined childhood obesity trends from kindergarten through 8th grade in a state with early annual surveillance.
- Utilized a large cohort of 16,414 children in Arkansas, starting in 2004.
Purpose of the Study:
- To determine the prevalence, incidence, and trajectory of obesity in children.
- To identify predictors of childhood obesity and understand unique risk patterns.
- To highlight the value of integrated school health data for policy.
Main Methods:
- Longitudinal analysis of body mass index (BMI) data from kindergarten to 8th grade.
- Statistical modeling including multiple linear and logistic regressions.
- Inclusion of demographic and family poverty status variables.
Main Results:
- Obesity prevalence rose from 14.9% in kindergarten to 24.5% in 8th grade.
- Consistent incidence rates of 4% annually, with 33.8% obese at least once by 8th grade.
- Kindergarten obesity strongly predicted 8th grade obesity (OR 17.5); unique sex/race/time interactions observed.
Conclusions:
- Childhood obesity follows distinct longitudinal patterns, expanding understanding of risk factors.
- Public school health systems collecting routine BMI data are valuable for informing health programs and policies.
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