NCT02603263

Brief Summary

Encouraging individuals to eat fruit and vegetables is difficult. However, recent evidence suggests that using social-based information might help. For instance, it has been shown that if people think that others are eating lots of fruit and vegetables, that they will consume more food to match the 'norm'.The purpose of this study was to determine whether social norm messages could be used to enhance vegetable purchases in workplace restaurants, in an observational study.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
9,445

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Feb 2015

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 1, 2015

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2015

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2015

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

October 22, 2015

Completed
20 days until next milestone

First Posted

Study publicly available on registry

November 11, 2015

Completed
Last Updated

November 11, 2015

Status Verified

November 1, 2015

Enrollment Period

6 months

First QC Date

October 22, 2015

Last Update Submit

November 9, 2015

Conditions

Eating Behaviour

Keywords

social normshealthy eatingvegetablesfield study

Outcome Measures

Primary Outcomes (1)

  • Percentage of meals containing vegetables

    7 months

Study Arms (1)

Workplace Restaurant Customers

1 Group (Workplace Restaurant Customers) across 3 sites (data to be combined at end of study) Study consists of three phases: 1. Pre Intervention 2. Intervention 3. Post Intervention All phases lasted two weeks and included monitoring till receipts for meals (these were automatically generated and held on the tills electronically). The intervention phase consisted of posters being displayed in the restaurants, featuring a Social Norms Poster.

Other: Social Norms Poster

Interventions

Social Norms PosterOTHER

A poster containing a social norms message: "Most people here choose to eat vegetables with their lunch"

Workplace Restaurant Customers

Eligibility Criteria

Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Customers at workplace restaurants.

You may qualify if:

  • Purchase of a meal at one of the restaurants

You may not qualify if:

  • None

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Birmingham

Birmingham, West Midlands, B15 2TT, United Kingdom

Location

Related Publications (1)

  • Thomas JM, Ursell A, Robinson EL, Aveyard P, Jebb SA, Herman CP, Higgs S. Using a descriptive social norm to increase vegetable selection in workplace restaurant settings. Health Psychol. 2017 Nov;36(11):1026-1033. doi: 10.1037/hea0000478. Epub 2017 May 25.

    PMID: 28541071DERIVED

MeSH Terms

Conditions

Feeding Behavior

Condition Hierarchy (Ancestors)

Behavior, AnimalBehavior

Study Officials

  • Jason M Thomas, PhD

    University of Birmingham

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 22, 2015

First Posted

November 11, 2015

Study Start

February 1, 2015

Primary Completion

August 1, 2015

Study Completion

August 1, 2015

Last Updated

November 11, 2015

Record last verified: 2015-11

Locations

GB(1)