Evaluation of a Supermarket Intervention: The NCI-Giant Food Eat for Health Study

A 2-year supermarket intervention in 20 pair-matched stores tested whether a nutrition education program could produce changes in food purchasing behavior. Food sales data for 2 intervention years were compared with baseline year data. The evaluation presented challenges related to the quasi-experim...

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Bibliographic Details
Published in:Evaluation review 1992-10, Vol.16 (5), p.464-490
Main Authors: Patterson, Blossom H., Kessler, Larry G., Wax, Yohanan, Bernstein, Amy, Light, Luise, Midthune, Douglas N., Portnoy, Barry, Tenney, Janet, Tuckermanty, Elizabeth
Format: Article
Language:English
Subjects:
Consumer Education
Consumers
Diet
District of Columbia
Eat for Health Study
Eating Habits
Evaluation
Food Stores
Health Education
Intervention
Maryland (Baltimore)
Nutrition
Program Evaluation
Purchasing
Research Methodology
Statistical models
Supermarkets
Time Series Design
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Summary:A 2-year supermarket intervention in 20 pair-matched stores tested whether a nutrition education program could produce changes in food purchasing behavior. Food sales data for 2 intervention years were compared with baseline year data. The evaluation presented challenges related to the quasi-experimental study design and to the high variability and auto- and cross-sectional correlations in the data. A complex time series model was used to take these factors into account and to test for intervention effects.
ISSN:0193-841X
1552-3926
DOI:10.1177/0193841X9201600502