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Consumer BehaviorNCT05595551

Process and Effect Evaluation of the Project "Aan Tafel in 1,2,3 Euro"

A study testing The intervention "Aan Tafel in 1, 2, 3 euro" in people with Consumer Behavior and Food Selection, run by University Ghent at 1 site in Belgium.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The goal of this research project is to learn what the impact of the specific project "Aan Tafel in 1 2 3 euro" is on the food and meal habits of families of lower SES. Three types of studies will be conducted: WP1) Process evaluation via qualitative research: focus groups and/or individual interviews with… Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Consumer Behavior, Food Selection
What is being tested?
The intervention "Aan Tafel in 1, 2, 3 euro"
Could I receive a placebo?
No, everyone receives an active treatment
How many people
272 participants
Where
1 siteBelgium
Study dates
1 Nov 2022to 31 Aug 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Be registered for the project Aan Tafel in 1-2-3 euro
  • Be a member of a family with at least one child under the age of 18 living at home.
  • Being Dutch-speaking: thorough knowledge of Dutch in terms of reading/writing/speaking.
  • Be over 18 years old and (regularly) responsible for the preparation of the family meals

Who cannot join

None listed.

Trial locations and contacts

1 site in 1 country.

Belgium1 site
  • Ghent University

    Ghent, 9000

Other trials in Belgium

About this study

Official title: Supporting Healthy and Sustainable Family Meals Among Parents With Lower Socioeconomic Status: Process and Effect Evaluation of the Project "Aan Tafel in 1,2,3 Euro"

The goal of this research project is to learn what the impact of the specific project "Aan Tafel in 1 2 3 euro" is on the food and meal habits of families of lower SES.

Three types of studies will be conducted:

Read more

WP1) Process evaluation via qualitative research: focus groups and/or individual interviews with participants of Aan Tafel in 1 2 3 euro, and with delegates of the social organizations;

WP2) Effect evaluation via secondary data-analysis of purchase data retrieved from loyalty cards of participants, and of general customers (i.e., control group);

WP3) Process and effect evaluation with a control group in a baseline-post design: the intervention group are participants of the program, and the control group are clients in social organizations, but do not participate in the program.

On the one hand we want to find out if the intervention has an effect on specific determinants (i.e., food literacy, self-efficacy, attitudes, food security) of food behavior/meal prepping behavior and on meal structure of the family (i.e., amount of freshly made meals, amount of meals cooked and consumed together) (WP3), as well as on participants' food choices (WP2). On the other hand we want to find out how participans experience the program, what succes factors and barriers are, as well as how social organizations experience the program (as a partner of Colruyt, and contact person of the vulnerable families) (WP1).

Read the detailed description

"Aan Tafel in 1 2 3 euro" is a project of retailer Colruyt in cooperation with social organizations in Belgium. The project/intervention was launched in 2016 and has been implemented throughout Belgium since. In 2021 about 8000 families have already been subscribed, and the numbers are still growing. Families with a lower SES (vulnerable families) are informed by a social organization (OCMW, CAW, kind \& gezin, etc.) and can voluntarily register for the project. When a family is registered, they receive a recipe booklet every two weeks at home. The booklet consists of six easy, child-friendly recipes with accompanying shopping lists. Recipes are targeted at three people and include fish, meat and veggie dishes. Each recipe is guaranteed to cost no more than one, two or three euros per serving. The participants are registered via the Xtra-card (loyalty card of Colruyt), so that the discount can be offered anonymously and discretely. Since the intervention is an already existing one, we made an overview of the intervention components, behavior change techniques and practical applications, based on the Intervention Mapping Theory (Kok et al., 2015) and the Behavior Change Wheel (Abraham \& Michie, 2008). Based on this overview, we determined goals and outcome measures for our research project.

In the qualitative study (WP1), participants of the intervention, as well as representatives of social organizations will be recruited to participate in an interview and/or focus group interview. Interviews will be conducted until data saturation is reached.

In the interventional study (WP3), participants of the project (intervention condition) will be compared to participants in a control condition who do not participate in the project. A total sample size of 200 participants is calculated, based on an a priori power analysis (two groups, two measurements, α=0.05; power=0.80, ES=0.25). Participants in both conditions will complete a survey in a pre-measurement and a post-measurement, three months after the start of the intervention.

The second effect study (WP2) has a longitudinal pre-post design, and is based on secondary purchase data from 2018 until 2022. The intervention group (i.e., participants of the intervention) will be compared to a control group (i.e., not subscribed in the intervention), by using general customer data. A multilevel growth model will be used to look at each individual's different purchase moments, with data before and during the intervention. The model represents three levels: 1) point of time/purchase, 2) customer, 3) store/location.

Being tested
The intervention "Aan Tafel in 1, 2, 3 euro"
Keywords
Health promotion, Nutrition intervention, Socioeconomic status, Family meals, Parents
Medical subject headings
Consumer Behavior, Food Preferences

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • The intervention "Aan Tafel in 1, 2, 3 euro"Behavioural

    The participants in this group are clients of Colruyt who are subscribed to the program "Aan Tafel in 1 2 3 euro". They will receive two-weekly recipe booklets with 6 balanced and child-friendly recipes in each booklet. They are guaranteed a fixed price for each recipe, that will be given at the checkout counter, based on their loyalty card.

Study groups in NCT05595551
Study groupRoleWhat they receive
The intervention "Aan Tafel in 1, 2, 3 euro"ExperimentalThe participants use the intervention program: the recipe booklets and the provided price guarantee for their meals.
Receives: Behavioral: The intervention "Aan Tafel in 1, 2, 3 euro"
Control groupNo interventionThe participants are not registered to use the program and will be recruited in social organizations to match their sociodemographic profile as much as possible.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Food literacy

    Food Literacy will be assessed via the 11 item questionnaire of Begley et al. (2018). And via the 6-item subscale 'Food preparation skills' of the Self-Perceived Food Literacy (SPFL) scale of Poelman et al. (2018).

    Measured: Change from baseline food literacy at 3 months

  2. Change in Self-efficacy for eating/cooking vegetables and fruits

    Self-efficacy will be measured with the 4-item subscale of the survey of Condrasky et al. (2011) 3. Food security, measured with the questionnaire of Gulliford et al. (2006)

    Measured: Change from baseline self-efficacy at 3 months

  3. Change in Cooking attitude

    Cooking attitudes will be measured with the 4-item subscale of the survey of Condrasky et al. (2011)

    Measured: Change from baseline attitudes at 3 months

  4. Change in Food security

    Food security will be assessed via the 18 Household Food Security Survey (HFSS) items of Gulliford et al. (2006)

    Measured: Change from baseline food security at 3 months

  5. Change in Family meal time frequency

    Family meal time frequency will be measured with an item out of the questionnaire of "Family meal time environment" of Fulkerson et al. (2006)

    Measured: Change from baseline meal time frequency at 3 months

  6. Change in Meal preparation

    Meal preparation will be measured with an item out of the short questionnaire for assessing the impact of cooking skills interventions by Barton et al. (2011).

    Measured: Change from baseline meal preparation at 3 months

  7. Change in food purchases (WP2)

    Food categories such as vegetables, ready-to-eat meals and snacks

    Measured: Change from amount of food purchases before the subscription into the project at the time after subscription

Secondary outcomes (1)
  1. Change in Reported eating behavior

    Specific food items related to mealtime are measured, based on the Health Behavior in School-aged Children (HBSC) survey.

    Measured: Change from baseline reported eating behavior at 3 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Oct 2022
  2. Study start1 Nov 2022
  3. Primary completion31 Aug 2023
  4. Study completion31 Aug 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
272 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05595551
Sponsor's protocol ID
ONZ-2022-0343
Status last verified
Oct 2023
First submitted
17 Oct 2022
Last updated
6 Oct 2023
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Kok G, Gottlieb NH, Peters GJ, Mullen PD, Parcel GS, Ruiter RA, Fernandez ME, Markham C, Bartholomew LK. A taxonomy of behaviour change methods: an Intervention Mapping approach. Health Psychol Rev. 2016 Sep;10(3):297-312. doi: 10.1080/17437199.2015.1077155. Epub 2015 Oct 15.

    PubMed 26262912
  • Abraham C, Michie S. A taxonomy of behavior change techniques used in interventions. Health Psychol. 2008 May;27(3):379-87. doi: 10.1037/0278-6133.27.3.379.

    PubMed 18624603
  • Barton KL, Wrieden WL, Anderson AS. Validity and reliability of a short questionnaire for assessing the impact of cooking skills interventions. J Hum Nutr Diet. 2011 Dec;24(6):588-95. doi: 10.1111/j.1365-277X.2011.01180.x. Epub 2011 Jun 8.

    PubMed 21649746
  • Fulkerson JA, Neumark-Sztainer D, Story M. Adolescent and parent views of family meals. J Am Diet Assoc. 2006 Apr;106(4):526-32. doi: 10.1016/j.jada.2006.01.006.

    PubMed 16567147
  • Begley A, Paynter E, Dhaliwal SS. Evaluation Tool Development for Food Literacy Programs. Nutrients. 2018 Nov 2;10(11):1617. doi: 10.3390/nu10111617.

    PubMed 30400130
  • Poelman MP, Dijkstra SC, Sponselee H, Kamphuis CBM, Battjes-Fries MCE, Gillebaart M, Seidell JC. Towards the measurement of food literacy with respect to healthy eating: the development and validation of the self perceived food literacy scale among an adult sample in the Netherlands. Int J Behav Nutr Phys Act. 2018 Jun 18;15(1):54. doi: 10.1186/s12966-018-0687-z.

    PubMed 29914503
  • Condrasky MD, Williams JE, Catalano PM, Griffin SF. Development of psychosocial scales for evaluating the impact of a culinary nutrition education program on cooking and healthful eating. J Nutr Educ Behav. 2011 Nov-Dec;43(6):511-6. doi: 10.1016/j.jneb.2010.09.013. Epub 2011 Aug 15.

    PubMed 21840764
  • Gulliford MC, Nunes C, Rocke B. The 18 Household Food Security Survey items provide valid food security classifications for adults and children in the Caribbean. BMC Public Health. 2006 Feb 8;6:26. doi: 10.1186/1471-2458-6-26.

    PubMed 16466571
  • Vos M, Proesmans VLJ, Van Kerckhove A, Deforche B, Michels N, Poelman MP, Van Lippevelde W. Evaluation of a national supermarket intervention supporting vulnerable families in healthy meal practices: a natural experiment. BMC Med. 2025 Jul 1;23(1):382. doi: 10.1186/s12916-025-04210-y.

    PubMed 40597156
  • Vos M, Van Kerckhove A, Deforche B, Proesmans VLJ, Michels N, Poelman MP, Geuens M, Van Lippevelde W. Supporting vulnerable families' meal practices: process evaluation of a nationwide intervention implemented by a retailer and social organizations. BMC Public Health. 2024 Nov 6;24(1):3060. doi: 10.1186/s12889-024-20488-8.

    PubMed 39506698

Questions about this trial

What is this clinical trial studying?

A study testing The intervention "Aan Tafel in 1, 2, 3 euro" in people with Consumer Behavior and Food Selection, run by University Ghent at 1 site in Belgium.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 6 Oct 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Food literacy (time frame: Change from baseline food literacy at 3 months). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05595551, which also lists 10 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Oct 2023.

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