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Evaluation of a Supermarket InterventionThe NCI-Giant Food Eat for Health StudyNational Cancer Institute
National Cancer Institute
Hebrew University, Jerusalem
Prospective Payment Commission
Institute for Science in Society, Washington, DC
Information Management Services
National Cancer Institute
Giant Food
U.S. Department of Agriculture Extension Service 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.
Evaluation Review, Vol. 16, No. 5,
464-490 (1992) |
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