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Related Experiment Video

Updated: May 19, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

Using routinely collected growth data to assess a school-based obesity prevention strategy.

E B Rappaport¹, C Daskalakis, J A Sendecki

¹Department of Family and Community Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA. elizabeth.rappaport@jefferson.edu

International Journal of Obesity (2005)

|September 5, 2012

Summary

This school-based obesity prevention program did not show significant effects on student BMI or overweight/obesity rates. Re-evaluation using broader data failed to confirm earlier positive findings in a smaller student group.

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Area of Science:

Pediatric Obesity Research
Public Health Interventions
School-Based Health Programs

Background:

School-based anti-obesity interventions show inconsistent results.
Previous studies reported a beneficial effect of a specific strategy on student weight status.
This study re-evaluated that strategy using growth screening data.

Purpose of the Study:

To re-evaluate the effectiveness of a school-based nutrition education intervention on childhood obesity.
To assess changes in body mass index (BMI) Z-scores and overweight/obesity prevalence.
To investigate incidence, remission, and long-term effects of the intervention.

Main Methods:

A 2-year cluster-randomized trial involving 10 K-8 schools (5 intervention, 5 control).
Analysis of student height and weight data for 6 consecutive school years.
Mixed-effects linear regression for BMI Z-scores and conditional logistic regression for overweight/obesity prevalence.

Main Results:

No significant difference in mean BMI Z-score increase between intervention (0.10) and control (0.09) groups.
Overweight/obesity prevalence increased by 3% in both groups, with no significant intervention effect.
No significant intervention effect on incidence, remission, or long-term outcomes.

Conclusions:

The nutrition education intervention did not confirm earlier findings of effectiveness when applied to the entire target population.
Discrepancies may be due to volunteer bias in prior evaluations or measurement error in routinely collected data.
Routinely collected data for the entire student population did not support the intervention's efficacy.