Impact of Nutrition Labels on Consumer Purchasing Intentions
Study Details
Study Description
Brief Summary
The purpose of this interventional study is to compare the impact of four different Front-Of-Pack (FOP) nutrition labels on purchasing intentions. This study is nested in the ongoing web-based prospective observational NutriNet-Santé cohort study, including on December 2014 around 150,000 participants. The investigators will perform a five-arm randomized trial where participants will be subjected to different FOP nutrition label formats: Guidelines Daily Amount (GDA), Multiple Traffic Lights (MTL), 5-Color Nutrition Label (5-CNL), Green Tick (Tick) and a 'no label' condition. The impact of front-of-pack nutrition labels on the nutritional quality of the shopping cart will be assessed. Participants from the NutriNet-Santé cohort study will be randomly assigned to one of these five experimental conditions according to their sociodemographic characteristics.
Purchasing intentions will be assessed using an experimental web-based supermarket designed to look like a regular online grocery store. The supermarket includes 269 unique products divided into 4 categories: dairy products, processed meat/delicatessen, savory and breakfast/sugary products. Each category is then separated into specific products families like yogurt, milk, cheese, etc. for the dairy products category. Inside a food family, the selection of foodstuffs will be made to obtain a representative sample of the products commonly sold in French supermarket. For each type of products, at least two variants are proposed. Products are retailers or manufacturers branded. Categories of products that are not usually bought each week, or which are likely to be bought from different sources are not included on the web-based supermarket.
Participants are asked to simulate a shopping situation: they have to select a week worth of food for their family among proposed products. If the user is not able to find a product he/she usually buy, the instruction is to select similar product among proposed ones.
Information provided for each product is: name, price and the picture with the FOP label/or not according to the experimental condition to which the participant is allocated. A brief explanation of the FOP label used is also given.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: 5-Color Nutrition Label (5-CNL) The 5-CNL front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket |
Behavioral: 5-CNL
The 5-CNL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment
|
| Experimental: Mutiple Traffic Lights (MTL) The MTL front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket |
Behavioral: MTL
The MTL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment
|
| Experimental: Guidelines Daily Amounts (GDA) The GDA front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket |
Behavioral: GDA
The GDA front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment
|
| Experimental: Green Tick (Tick) The Tick front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket |
Behavioral: Tick
The Tick front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment
|
| No Intervention: No label No front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket |
Outcome Measures
Primary Outcome Measures
- Overall nutritional quality of the shopping cart [up to 27 weeks]
The overall nutritional quality of the shopping cart is estimated by computing the Food Standards Agency (FSA) nutrient profiling system for 100 g of the cart (i.e. sum of the FSA score of all products, divided by the number of products chosen)
Secondary Outcome Measures
- Caloric value of the shopping cart [up to 27 weeks]
The caloric value of the shopping cart is calculated for 100 g of the cart
- Nutrients content of the shopping cart [up to 27 weeks]
The nutrients content (i.e. lipids, saturated fatty acids, sugars, proteins, fibers, sodium) of the shopping cart is calculated for 100 g of the cart
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Being a participant of the NutriNet-Santé cohort study
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Completing the preliminary questionnaire about nutrition knowledge and purchasing habits
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Completing online shopping in the experimental supermarket
Exclusion Criteria:
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Not going shopping usually
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Having a difference greater than 400€ between the price of their shopping cart versus their usual weekly shopping cart budget
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Having aberrant body mass index (i.e. >55 or <11 for women and <13 for men)
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Equipe de Recherche en Epidémiologie Nutritionnelle | Bobigny | France | F-93017 |
Sponsors and Collaborators
- University of Paris 13
- Institut National de la Santé Et de la Recherche Médicale, France
Investigators
- Principal Investigator: Serge Hercberg, Pr, EREN
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- Nutrinet SM1