Pricing Interventions Based on Energy Content in Restaurants

Obesity Clinical Trial

Official title:

Socioeconomic Position and the Effectiveness of a Pricing Intervention Based on Energy Content in Restaurants: a Real-world Experiment

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT05818345
• Other study ID #: Restaurant Study
• Status: Terminated
• Phase: N/A
• Start date: March 27, 2023
• Est. completion date: July 1, 2023

Study information

• Verified date: July 2023
• Source: University of Liverpool
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The goal of this clinical trial is to examine the impact of price decreases based on energy content in a full-service restaurant on immediate dietary consumption (in terms of kilocalories (kcals), sugar, fat, and salt intake) and dietary consumption the rest of the day following the intervention; and whether the intervention effects differ based on socioeconomic position (SEP).

Participants will be asked to visit the restaurant twice. At visit 1, participants will receive a control study menu with the existing pricing structure of the restaurant. At visit 2, participants will receive the same study menu with the pricing intervention introduced.

For comparative purposes a smaller subgroup of participants will receive the control menu at both visit 1 and 2 to allow the researchers to estimate whether any pre-post changes occur in the absence of a pricing intervention (and whether change differs by SEP).

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 100
• Est. completion date: July 1, 2023
• Est. primary completion date: July 1, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• UK resident, aged 18 and older, fluent in English, have an out-of-home meal at least once a month and have no dietary allergies

Exclusion Criteria:

• No further exclusion criteria as it is a real-world study

Related Conditions & MeSH terms

• Eating Behavior
• Healthy Diet
• Obesity

Intervention

Behavioral:
• Pricing intervention
Participants will be provided with a menu with manipulated prices for products with lower kilocalories

Locations

Country	Name	City	State
United Kingdom	University of Liverpool	Liverpool	Merseyside
United Kingdom	University of Liverpool	Liverpool

Sponsors (2)

Lead Sponsor	Collaborator
University of Liverpool	European Research Council

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Total kilocalories (kcal) ordered at the restaurant	The researchers will observe whether the total kcal ordered is different with a standard menu versus the menu with price manipulations	1 hour
Primary	Total kcal consumed at the restaurant	The researchers will observe whether the total kcal consumed (taking into account leftovers and food sharing) is different with a standard menu versus the menu with price manipulations	1 hour
Secondary	Later kcal intake	The researchers will examine dietary intake the rest of the day following the restaurant visit to examine evidence of compensatory dietary intake.	10 hours
Secondary	Total sugar, fat and salt intake	The researchers will observe whether the total sugar, fat and salt ordered is different with a standard menu versus the menu with price manipulations	1 hour