The purpose of the research is to examine the association between price changes, nutrient profiling, and grocery food purchases among household grocery shoppers.
Participants will be asked to select a week's worth of groceries for their household from a virtual online grocery store. Shoppers will be randomly assigned to one of four conditions (control, nutrient profiling, price change, nutrient profiling and price change).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
788
Nutrient profiling system will be present during shopping session.
Price changes will be present during shopping session.
University at Buffalo
Buffalo, New York, United States
Nutritional Quality of Food Purchases
The Overall Nutrient Quality Index (ONQI) was used to assess nutritional quality of foods purchased. The ONQI is a 1 - 100 scale in which higher numbers indicate higher nutritional quality. Each food is given a score based on a ratio with positive health nutrients in the numerator and detrimental health nutrients in the denominator, based on a proprietary algorithm created by NuVal. The average ONQI score for all the groceries purchases was used as the outcome measure, of ONQI scores on a scale.
Time frame: Participants were followed for one shopping session, an average of 2.5 hours
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