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The National Evaluation of School Nutrition Programs: data analysis methods.

The American Journal of Clinical Nutrition

|August 1, 1984

Summary

This study details analytic methods for the National Evaluation of School Nutrition Programs, focusing on participation and its effects on student health and family spending. The findings inform future program evaluations and nutritional research.

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Area of Science:

Nutrition Science
Public Health
Econometrics

Background:

School nutrition programs are vital for student well-being and dietary habits.
Evaluating program effectiveness requires robust analytical frameworks.
Understanding participation drivers is key to maximizing program impact.

Purpose of the Study:

To provide an overview of the analytic methods used in the National Evaluation of School Nutrition Programs.
To describe a path model illustrating relationships between program participation and key outcomes.
To explain the selection of statistical models for impact assessment.

Main Methods:

Development of a path model to represent hypothesized relationships.
Identification of outcome variables: program participation, family food expenditures, student dietary intake, and anthropometric measurements.
Discussion of statistical and structural model selection, including the rationale for using ordinary least squares estimates.

Main Results:

The path model visualizes the complex decision-making process influencing student participation.
The study outlines the statistical approaches used to estimate the impact of school nutrition programs.
The choice of ordinary least squares over modified two-stage least squares is justified for specific analytical needs.

Conclusions:

The analytic methods employed provide a comprehensive framework for evaluating school nutrition programs.
The described path model offers insights into factors affecting program participation and outcomes.
The study's methodological choices are tailored to accurately assess program impacts on students and families.

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