Impact of Nutrition Labels on Consumer Purchasing Intentions

NCT ID: NCT02385838

Last Updated: 2016-05-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

11981 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-12-31

Study Completion Date

2015-06-30

Brief Summary

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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.

Detailed Description

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Conditions

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Food Labeling Choice Behavior

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SCREENING

Blinding Strategy

NONE

Study Groups

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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

Group Type EXPERIMENTAL

5-CNL

Intervention Type BEHAVIORAL

The 5-CNL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

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

Group Type EXPERIMENTAL

MTL

Intervention Type BEHAVIORAL

The MTL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

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

Group Type EXPERIMENTAL

GDA

Intervention Type BEHAVIORAL

The GDA front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

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

Group Type EXPERIMENTAL

Tick

Intervention Type BEHAVIORAL

The Tick front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

No label

No front-of-pack nutrition labeling is affixed on the front-of-pack of foodstuffs of the experimental web-based supermarket

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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5-CNL

The 5-CNL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

Intervention Type BEHAVIORAL

MTL

The MTL front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

Intervention Type BEHAVIORAL

GDA

The GDA front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

Intervention Type BEHAVIORAL

Tick

The Tick front-of-pack nutrition label is introduced on foodstuffs in a controlled shopping environment

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Being a participant of the NutriNet-Santé cohort study
* Completing the preliminary questionnaire about nutrition knowledge and purchasing habits
* Completing online shopping in the experimental supermarket

Exclusion Criteria

* Not going shopping usually
* Having a difference greater than 400€ between the price of their shopping cart versus their usual weekly shopping cart budget
* Having aberrant body mass index (i.e. \>55 or \<11 for women and \<13 for men)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Institut National de la Santé Et de la Recherche Médicale, France

OTHER_GOV

Sponsor Role collaborator

University of Paris 13

OTHER

Sponsor Role lead

Responsible Party

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Serge HERCBERG

Prof. Dr.

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Serge Hercberg, Pr

Role: PRINCIPAL_INVESTIGATOR

EREN

Locations

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Equipe de Recherche en Epidémiologie Nutritionnelle

Bobigny, , France

Site Status

Countries

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France

References

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Ducrot P, Julia C, Mejean C, Kesse-Guyot E, Touvier M, Fezeu LK, Hercberg S, Peneau S. Impact of Different Front-of-Pack Nutrition Labels on Consumer Purchasing Intentions: A Randomized Controlled Trial. Am J Prev Med. 2016 May;50(5):627-636. doi: 10.1016/j.amepre.2015.10.020. Epub 2015 Dec 15.

Reference Type DERIVED
PMID: 26699246 (View on PubMed)

Other Identifiers

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Nutrinet SM1

Identifier Type: -

Identifier Source: org_study_id

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