None listed
Conditions
Brief summary
Participants, responsible for the grocery shopping of their household will be recruited via telephone and randomised to receive one of four groups. All participants will be read a list of beverages frequently purchased from Australian supermarkets and asked the quantity of each they would intend to purchase during a typical grocery shop. The price of caloric sweetened beverages read to participants will be 10%, 20% and 30% higher then the market price for groups randomly allocated to group 1, 2 and 3 respectively. The price of beverages for participants allocated to the comparison group (group 4) will be consistent with market price. All participants will provide data regarding their intended purchase of beverages during the telephone survey.
Interventions
Participants allocated to the one of three beverage tax conditions.
During a telephone survey, participants will be read a list of beverages typically available from an Australian supermarket. The survey will be conducted once only.
For each beverage product type, participants will be provided with information about the price and container sizes (up to three) which the product can be purchased (for example, a 2 litre bottle, a 1.5 litre bottle and a 600ml bottle) based on data regarding the m
Participants allocated to the one of three beverage tax conditions. During a telephone survey, participants will be read a list of beverages typically available from an Australian supermarket. The survey will be conducted once only. For each beverage product type, participants will be provided with information about the price and container sizes (up to three) which the product can be purchased (for example, a 2 litre bottle, a 1.5 litre bottle and a 600ml bottle) based on data regarding the most frequently purchased container size for that beverage product. For each beverage type, participants will be asked to report the number of products (in each container size), they would intend to purchase for the consumption of their household during a typical grocery shop. The price of beverages containing caloric sweetener will be experimentally manipulated. For group 1: the price of such products will be increased by 10% For group 2: the price of such products will be increased by 20% For group 3: the price of such products will be increased by 30%
Sponsors
Luke Wolfenden
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Blinded (masking used)
Eligibility
Sex/Gender
All
Age
16 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
Participants will be sampled from a cohort of adults previously recruited into a random household general health telephone survey and who agreed to be approach for future opportunities for research participation. Additionally, to be eligible, participants must be 16 years or older be able to converse in English and have some current responsibility for household grocery shopping.
Exclusion criteria
nil
Outcome results
None listed