Clinical trial NCT05953194: Effects of Sugary Drinks Counter-marketing Messages
Official title: Effects of Anti-sugar-sweetened-beverage Counter-marketing on Behavioral Intentions and Perceived Weight Stigma
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Obesity
Weight Prejudice
Weight Gain
Dietary Habits
Keywords: counter-marketing
health communication
sugar sweetened beverage
Lead sponsor: Stanford University
Sponsor class: OTHER
Collaborators: name: Harvard Pilgrim Health Care
First posted: 2023-07-20
Enrollment: 2184
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: This study aims to examine consumer responses to traditional and counter-marketing messages discouraging sugary drink consumption, including effects on intentions to consume sugary drinks and perceived weight stigma. Because prior research has suggested that counter-marketing may be especially effective among younger populations, the investigators will examine effects overall and by age group (young adults \[ages 18-29 years\] vs. middle and older adults \[ages 30+ years\]).

Detailed description: In this online randomized clinical trial, participants will be randomized to one of three arms: 1) Control (neutral) messages, 2) Traditional health messages, and 3) Counter-marketing messages. In each arm, participants will view four messages developed for their randomly assigned arm and answer questions about the messages and their behavioral intentions.

Eligibility criteria: Inclusion Criteria:

* 18 years old or older

Exclusion Criteria:

* Less than 18 years old

Primary outcomes:
measure: Intentions to consume sugary drinks
timeFrame: The survey will take up to 20 minutes
Secondary outcomes:
measure: Perceived message effectiveness for discouraging sugary drink consumption
timeFrame: The survey will take up to 20 minutes
measure: Negative feelings toward drinking sugary drinks
timeFrame: The survey will take up to 20 minutes
measure: Anticipated social interactions
timeFrame: The survey will take up to 20 minutes
measure: Attitudes toward sugary drink companies
timeFrame: The survey will take up to 20 minutes
measure: Perceived obesity stigma
timeFrame: The survey will take up to 20 minutes
measure: Message reactance
timeFrame: The survey will take up to 20 minutes
Other outcomes:
Locations:
city: Palo Alto
country: United States
facility: Stanford School of Medicine
state: California
Study officials:
affiliation: Stanford School of Medicine, Department of Pediatrics
name: Anna H Grummon, PhD
role: PRINCIPAL_INVESTIGATOR
References:
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citation: Crandall CS, Reser AH. Attributions and Weight-Based Prejudice. In: Brownell K, Puhl R, Schwartz M, Rudd L, eds. Weight Bias: Nature, Consequences, and Remedies. Guilford Publications; 2005:83-96.
citation: Puhl RM, Schwartz MB, Brownell KD. Impact of perceived consensus on stereotypes about obese people: a new approach for reducing bias. Health Psychol. 2005 Sep;24(5):517-25. doi: 10.1037/0278-6133.24.5.517.
citation: Dixon H, Scully M, Gascoyne C, Wakefield M. Can counter-advertising diminish persuasive effects of conventional and pseudo-healthy unhealthy food product advertising on parents?: an experimental study. BMC Public Health. 2020 Nov 25;20(1):1781. doi: 10.1186/s12889-020-09881-1.
citation: Krieger J, Kwon T, Ruiz R, Walkinshaw LP, Yan J, Roberto CA. Countermarketing About Fruit Drinks, Alone or With Water Promotion: A 2019 Randomized Controlled Trial in Latinx Parents. Am J Public Health. 2021 Nov;111(11):1997-2007. doi: 10.2105/AJPH.2021.306488. Epub 2021 Oct 28.