Effect of kcal and PACE Labelling on Self-served Portion Size

Socioeconomic Position and the Effect of kcal Labelling and PACE Labelling on Self-served Portion Size

Participants will take part in an online survey. They will be asked to choose the amount of food they would like to eat based on pictures of 18 dishes sequentially displayed on the screen. They will be randomly allocated to four different groups: kcal labelling, PACE labelling (Physical Activity Calorie Equivalent: minutes to walk to burn off the calories), kcal and PACE labelling combined, no labelling, in a between subject design. The main outcome variable is the total "self-served" energy for each dish (in kcal).

Study Overview

• Status: Completed
• Conditions: Diet, Healthy; Food Selection
• Intervention / Treatment: Behavioral: Kcal labelling; Behavioral: PACE labelling

Detailed Description

See attached protocol documents.

• Study Type: Interventional
• Enrollment (Actual): 1800
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United Kingdom
  • Merseyside
    • Liverpool, Merseyside, United Kingdom, L69 7ZA
      • University of Liverpool

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• United Kingdom residents
• Age ≥ 18
• Fluent in English
• Have access to a computer and Internet

Exclusion Criteria:

• Have any dietary restriction (vegetarian, vegan, gluten-free, sugar-free, diary or lactose free, food allergy)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Kcal labelling; Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time kcal counter synchronised with the food amount changes (i.e., increasing/decreasing).	Behavioral: Kcal labelling; Real-time kcal counter synchronised with the food amount changes
Experimental: PACE labelling; Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time PACE counter (as minutes needed to walk to burn off the calories) synchronised to the food amount changes (i.e., increasing/decreasing) with 4 min being equivalent to 20 kcal.	Behavioral: PACE labelling; Real-time PACE counter (as minutes needed to walk to burn off the calories) synchronised to the food amount changes
Experimental: Kcal and PACE labelling; Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time kcal and PACE counters synchronised to the food amount changes (i.e., increasing/decreasing).	Behavioral: Kcal labelling; Real-time kcal counter synchronised with the food amount changes; Behavioral: PACE labelling; Real-time PACE counter (as minutes needed to walk to burn off the calories) synchronised to the food amount changes
No Intervention: No labelling; Participants allocated to this group will only see on the screen the amount of food increasing or decreasing based how many times they tap on the corresponding keys.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Total self-served energy (kcal)	Energy content of the portion selected for each dish.	10 minutes (the time frame denotes time taken to perform the portion selection task and there is no follow up)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Kcal influence	Whether kcal content influences the quantity of self-served food	3 minutes (the time frame denotes time taken to fill in the debriefing questionnaire and there is no follow up)
PACE influence	Whether physical activity energy equivalent influences the quantity of self-served food.	3 minutes (the time frame denotes time taken to fill in the debriefing questionnaire and there is no follow up)

Collaborators and Investigators

• Sponsor: University of Liverpool

Study record dates

Study Major Dates

• Study Start (Actual): April 13, 2020
• Primary Completion (Actual): April 13, 2020
• Study Completion (Actual): May 13, 2020

Study Registration Dates

• First Submitted: April 7, 2020
• First Submitted That Met QC Criteria: April 7, 2020
• First Posted (Actual): April 10, 2020

Study Record Updates

• Last Update Posted (Actual): November 3, 2020
• Last Update Submitted That Met QC Criteria: November 2, 2020
• Last Verified: November 1, 2020

More Information

Terms related to this study

• Keywords: socio-economic position; kcal labelling; PACE labelling; portion size
• Other Study ID Numbers: 803194 1B4

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Yes
• IPD Plan Description: Shared on the Open Science Framework
• IPD Sharing Time Frame: On publication, indefinitely
• IPD Sharing Access Criteria: Open website
• IPD Sharing Supporting Information Type: Study Protocol; Statistical Analysis Plan (SAP); Informed Consent Form (ICF)

Study Data/Documents

1. Study Protocol
2. Statistical Analysis Plan
3. Informed Consent Form
4. Individual Participant Data Set
   Information comments: When results will be published

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No