Excess alcohol consumption Not Applicable
Conditions
Interventions
Participants will be randomly assigned to one of three conditions in an experiment with a between-subjects factor of drink subset availability (i. 75% non-alcoholic, 25% alcoholic ii. 50% non-alcoholi
Sponsors
University of Bristol
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Aged 18 years or over; 2. Current Tesco online customer 3. Regularly consume alcohol – beer, cider and/or wine (i.e., at least once a week) 4. Regularly purchase alcohol – beer, cider and/or wine – online at Tesco (i.e., at least once a month, minimum £20 monthly spend on these drinks) 5. Willing to select drinks from 64 options, shown in an online task, to purchase in next online shop at Tesco (Note: Options will include different brands of beer, cider, wine, alcohol-free beer, alcohol-free cider, alcohol-free wine and soft drinks available at Tesco; no additional drinks from these categories should be added to the Tesco shop) 6. Willing to complete online shop at Tesco, book a delivery (or Click and Collect) slot, and send the details to the research team within 48 hours of the drink selection task 7. Willing to send proof of purchase (i.e., itemised receipt) to the research team within 48 hours of delivery or collection date 8. Have a Tesco delivery or collection address in England or Wales
Exclusion criteria
Exclusion criteria: Does not meet the inclusion criteria
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Number of alcohol units selected (with an intention to purchase). Participants will be aware that they will be required to purchase the drink items chosen in the selection task and send proof of this to the research team. Therefore, the primary outcome of selection will be made in the context of intention to purchase and provide evidence of this behaviour. This is measured immediately, i.e. whilst participants are exposed to the availability intervention, and calculated from the selection task data | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Number of alcoholic drinks selected, measured immediately, i.e. whilst participants are exposed to the availability intervention, and calculated from the selection task data 2. Number of non-alcoholic drinks selected, measured immediately, i.e. whilst participants are exposed to the availability intervention, and calculated from the selection task data 3. Total number of drinks selected, measured immediately, i.e. whilst participants are exposed to the availability intervention, and calculated from the selection task data 4. Proportion of total drinks selected that are alcoholic, measured immediately, i.e. whilst participants are exposed to the availability intervention, and calculated by dividing the number of alcoholic drinks selected by the total number of drinks 5. Number of alcohol units purchased, measured immediately after the selection task and calculated from the purchasing data (i.e. from proof of purchase) 6. Number of alcoholic drinks purchased, measured immediately after the selection task and calculated from the purchasing data (i.e. from proof of purchase) 7. Number of non-alcoholic drinks purchased, measured immediately after the selection task and calculated from the purchasing data (i.e. from proof of purchase) 8. Total number of drinks purchased, measured immediately after the selection task and calculated from the purchasing data (i.e. from proof of purchase) 9. Proportion of total drinks purchased that are alcoholic, measured immediately after the selection task and calculated by dividing the number of alcoholic drinks purchased by the total number of drinks | — |
Countries
England, United Kingdom
Contacts
Public ContactElkie Wootton
Outcome results
None listed