Condition category
Not Applicable
Date applied
17/05/2019
Date assigned
18/05/2019
Last edited
20/05/2019
Prospective/Retrospective
Prospectively registered
Overall trial status
Ongoing
Recruitment status
Recruiting

Plain English Summary

Background and study aims
There is a growing interest for in-store interventions that can nudge people to purchase healthier foods, but a lack of data about their real-world effectiveness, especially over the medium term. The study aims to assess the ability of three point-of-sale interventions in grocery stores to improve the nutritional quality of food purchases.

Who can participate?
Anyone shopping at one of the participating grocery stores.

What does the study involve?
Grocery shopping at the participating stores, before and during the intervention. A few participants will be invited to answer an online survey about their perceptions and healthy eating intentions.

What are the possible benefits and risks of participating?
There are no foreseeable risks or benefits for the participants.

Where is the study run from?
The study is running in supermarkets and hypermarkets in the region of Lyon, France.

When is the study starting and how long is it expected to run for?
May 2019 to June 2020

Who is funding the study?
Institut Européen d'Administration des Affaires (European Institute of Business Administration, INSEAD), France

Who is the main contact?
1. Ms Sharon Bligh (public),
s.bligh@theconsumergoodsforum.com
2. Prof. Pierre Chandon (scientific),
pierre.chandon@insead.edu
3. Ms Nouha Touati (scientific),
nouha.touati@insead.edu


Trial website

Contact information

Type

Public

Primary contact

Ms Sharon Bligh

ORCID ID

Contact details

22 Rue du Gouverneur Général Éboué
Issy les Moulineaux
92130
France
00331 82 00 95 95
s.bligh@theconsumergoodsforum.com

Type

Scientific

Additional contact

Prof Pierre Chandon

ORCID ID

http://orcid.org/0000-0002-1887-1985

Contact details

Boulevard de Constance
Fontainebleau
77300
France
00331 60 72 40 00
pierre.chandon@insead.edu

Type

Scientific

Additional contact

Ms Nouha Touati

ORCID ID

Contact details

Boulevard de Constance
Fontainebleau
77300
France
+33 1 60 72 49 87
nouha.touati@insead.edu

Additional identifiers

EudraCT number

Nil known

ClinicalTrials.gov number

Nil known

Protocol/serial number

CHLF

Study information

Scientific title

Grocery store interventions to improve the nutritional quality of food purchases in a field setting. A controlled before and after real-life study

Acronym

CHLF

Study hypothesis

The three interventions will improve the nutritional quality of the foods purchased in the test grocery stores and will increase intentions to engage in healthier eating.

Ethics approval

Approved 17/05/2019, Internal Review Board of INSEAD (Boulevard de Constance, Fontainebleau Cedex, 77305, France; +33 (0)1 60 72 40 00; irb@insead.edu)

Study design

Interventional multi-centre controlled before and after design

Primary study design

Interventional

Secondary study design

Controlled before and after

Trial setting

Other

Trial type

Prevention

Patient information sheet

No participant information sheet available

Condition

Volunteer

Intervention

A total of five conditions are tested:
1. A group of stores with shopping carts with specially-designed posters placed in the front part of the cart to nudge consumers to reach the Public Health France recommendations for daily fruit and vegetable consumption
2. A group of stores with specific end-of-aisle displays promoting fruits & vegetables or foods with good nutritional profiles (with an A or B Nutriscore or at least a better Nutriscore than the average of their category), accompanied or not by promotional offers like temporary price reductions
3. A group of stores with specific checkout lines including an assortment of food with a good nutritional profile
4. Stores with all three interventions
5. There will be also a group of control stores with similar clientele and sales as the group of test stores and without any intervention.

Participants are regular shoppers at the participating grocery stores. The retailer will communicate anonymized purchase data for shoppers who have a loyalty card and scan it at the time they are making their purchases. All the shoppers will be informed of the intervention in the participating stores. All loyalty card holders have consented to have their data analyzed by the retailer. A random sample of loyalty card holders shopping in the participating stores will also receive an invitation to fill out a survey. This survey will collect data about their awareness of the intervention, their evaluation of it, and their intentions to engage in healthy eating behaviors. Participation in the survey is voluntary and not compensated.

Intervention type

Behavioural

Phase

Drug names

Primary outcome measure

Nutritional quality of the basket of supermarket food purchases:
1. Quantity of fruits and vegetables purchased, and
2. Quantity-weighted nutrition quality of their basket of purchases, measured using the Ofcom/FSA nutrient profile
At baseline (before the intervention), and at the following time points: 31/08/2019, 31/12/2019 and 30/06/2020.

Secondary outcome measures

Consumers awareness and behavioral intentions to engage in healthier behaviors measured using an online questionnaire sent to the loyalty cardholders at baseline and at the following times: 15/06/2019, 15/10/2019, 15/02/2020, 15/06/2020.

Overall trial start date

21/02/2019

Overall trial end date

30/06/2020

Reason abandoned (if study stopped)

Eligibility

Participant inclusion criteria

1. Customers enrolled in the loyalty program of the test and control grocery stores of the participating retailer

Participant type

Other

Age group

Adult

Gender

Both

Target number of participants

100000

Participant exclusion criteria

1. No data will be collected on the purchases of minors

Recruitment start date

20/05/2019

Recruitment end date

30/06/2020

Locations

Countries of recruitment

France

Trial participating centre

Carrefour Market Lyon Lumière
68 avenue des Frères Lumière
Lyon
69008
France

Trial participating centre

Carrefour Hyper Marché Ecully
Chemin Jean-Marie Vianney CC, Grand Ouest
Ecully
69130
France

Trial participating centre

Carrefour Market VELIZY -DE GAULLE
78 Avenue du Général de Gaulle
Vélizy-Villacoublay
78140
France

Trial participating centre

COURBEVOIE
Centre commercial Charras, 12 Rue Baudin
Courbevoie
92400
France

Trial participating centre

Carrefour Market CLERMONT FD -JAUDE
10 Rue Barrière de Jaude
Clermont-Ferrand
63000
France

Trial participating centre

Carrefour Market BOULOGNE BILLANCOURT
67 Avenue du Général Leclerc
Boulogne-Billancourt
92100
France

Trial participating centre

Carrefour Market IVRY S/SEINE
22 Promenée Marat
Ivry-sur-Seine
94200
France

Trial participating centre

Carrefour Market PARIS -ST OUEN
102 Avenue de Saint-Ouen
Paris
75018
France

Trial participating centre

Hyper Marché Carrefour Montesson
280 Avenue Gabriel Péri
Montesson
78360
France

Trial participating centre

Hyper Marché Carrefour Les Ulis
rue Aubrac
Les Ulis
91940
France

Trial participating centre

Hyper Marché Athis-Mons
80 route Nationale 7 Boîte Postale 310
Athis-Mons
91200
France

Trial participating centre

Hyper Marché Grenoble Meylan
1 Boulevard des Alpes
Meylan
38240
France

Trial participating centre

Hypermarché Lyon Confluence
112 Cours Charlemagne
Lyon
69002
France

Trial participating centre

Hypermarché Carrfour FrancheVille
Avenue du Chater
Francheville
69340
France

Trial participating centre

Hypermarché Carrefour Villeurbanne
145 Rue Anatole France
Villeurebanne
69100
France

Trial participating centre

Carrefour Market Genas
2 Avenue Charles de Gaulle,
Genas
69740
France

Trial participating centre

Carrefour Market Meyzieu
8 Rue de la République
Meyzieu
69330
France

Trial participating centre

Carrefour Market Fontaine
1 Montée Roy
Fontaines sur Saône
69270
France

Trial participating centre

Carrefour Market Belleville
Avenue de Verdun
Belleville
69220
France

Trial participating centre

Carrefour Market Villeurbanne
61 Avenue Roger Salengro
Villeurbanne
69100
France

Trial participating centre

Carrefour Market Irigny
lieu dit Le, Rue du Château d'Yvours
Irigny
69540
France

Trial participating centre

Carrefour Market Corbas
32 Avenue de Corbetta
Corbas
69960
France

Trial participating centre

Carrefour Market St Priest
3 boulevard E.Herriot, Zac Mozart
Saint Priest
69800
France

Trial participating centre

Carrefour Market Rilleux
104 Avenue de l'Europe
Rilleux-la-pape
69140
France

Trial participating centre

Carrefour Market Villefranche
169 Rue de Stalingrad
Villefranche sur saône
69400
France

Sponsor information

Organisation

INSEAD

Sponsor details

Boulevard de Constance
Fontainebleau
77300
France
01 60 72 40 00
pierre.chandon@insead.edu

Sponsor type

University/education

Website

www.insead.edu

Funders

Funder type

University/education

Funder name

Institut Européen d'Administration des Affaires

Alternative name(s)

European Institute of Business Administration, INSEAD

Funding Body Type

private sector organisation

Funding Body Subtype

Universities (academic only)

Location

France

Results and Publications

Publication and dissemination plan

The results of the study will be targeted for publication in academic journals. Progress reports about the implementation of the study and its evaluation by consumers will be released as the study progresses.

IPD sharing statement:
The datasets generated during and/or analysed during the current study are not expected to be made available due to their proprietary nature and potential commercial use.

Intention to publish date

30/06/2021

Participant level data

Not expected to be available

Basic results (scientific)

Publication list

Publication citations

Additional files

Editorial Notes

20/05/2019: The following changes were made to the trial record: 1. The recruitment start date was changed from 27/05/2019 to 20/05/2019. 2. The condition was changed from 'healthy volunteer' to 'volunteer'. 17/05/2019: Trial’s existence confirmed by Internal Review Board of INSEAD