Investigating the Effects of Calorie Information and Serving Size of Alcohol Products on Alcohol Consumption.

University of Liverpool

Status: Enrolling

Conditions: Alcohol; Obesity and Overweight

Treatments: Behavioral: Serving size manipulation; Behavioral: Calorie information manipulation

Study type: Interventional

Funder types: Other

Identifiers

NCT07103967

AlcCal Real-world Study

Details and patient eligibility

About

The present study aims to investigate whether alcohol consumption is reduced when participants are shown calorie information of alcohol products, compared with when calorie information is absent. We also wish to see whether alcohol consumption levels are reduced when changing the serving sizes available to participants.

Full description

We will examine the effect of alcohol calorie information on calorie and alcohol unit consumption in a semi-naturalistic real-world experiment by randomising pub quiz evenings to alcohol calorie information vs. absence of calorie information (control). Because current evidence for alcohol calorie information from online hypothetical choice experiments suggests any impact on alcohol consumption may be null or very small, we will compare and benchmark the size of any potential effect of alcohol calorie information to another public health alcohol intervention known to reduce alcohol consumption (alcohol serving size). We will achieve this by also randomizing evenings to normal sized servings of alcohol (control) vs. reduced serving sizes. In addition to examining effects of interventions on what people drink and eat during the pub quiz, we will examine alcohol and energy intake after the pub quiz to probe for potential compensatory behaviour in response to interventions. Because it is currently unclear how useful consumers find alcohol information when implemented in real-world conditions, we will also examine the extent to which participants perceive the interventions to be effective.

Enrollment: 450 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Consume alcohol on a regular basis (at least one UK unit per week)
• Be aged 18 or over

Exclusion criteria

• Have a current or previously diagnosed alcohol use disorder

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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450 participants in 4 patient groups

Calorie information present, serving size reduced

Experimental group

Description:

Participants will be presented with calorie information of alcohol products, and will have a restricted selection of serving sizes of drinks available to them.

Treatment:

Behavioral: Calorie information manipulation

Behavioral: Serving size manipulation

Calorie information present, serving size typical

Experimental group

Description:

Participants will be presented with calorie information of alcohol products, and the serving sizes of drinks available to participants will not be manipulated.

Treatment:

Behavioral: Calorie information manipulation

Behavioral: Serving size manipulation

Calorie information absent, serving size reduced

Experimental group

Description:

Participants will not be presented with calorie information of alcohol products, and will have a restricted selection of serving sizes of drinks available to them.

Treatment:

Behavioral: Calorie information manipulation

Behavioral: Serving size manipulation

Calorie information absent, serving size typical

Experimental group

Description:

Participants will not be presented with calorie information of alcohol products, and the serving sizes of drinks available to participants will not be manipulated.

Treatment:

Behavioral: Calorie information manipulation

Behavioral: Serving size manipulation