Clinical trial · Interventional
Developing and Evaluating Product Messaging
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Purpose: To assess the impact of taxes, warnings, and a combination of taxes and warnings on US adults' decisions to purchase products that contain red meat in an online grocery store. Procedures (methods): Participants will be recruited from Prime Panels (an online panel research company). Following online consent, participants will be assigned to one of four trial arms: 1) Control (no warning and no tax), 2) Warnings (all products that contain red meat have a health warning and environmental warning), 3) Tax (30% tax on products that contain red meat), and 4) Combined warning and tax (all products that contain red meat will have the two warnings and a 30% tax). Then, participant will enter an online grocery store reflecting their assigned arm. The participant will be instructed to complete a shopping task in the online grocery store. After completing the shopping task, participants will be redirected to an online survey and answer a series of questions about the shopping task, labels (excluding tax and control groups), and taxes (excluding warning and control groups). Questions will also include standard demographic and health related variables.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Cancer of Colon | Malignant Colon Neoplasm | ALIAS | 0.90 |
| Cancer of Rectum | Malignant Rectal Neoplasm | ALIAS | 0.90 |
Interventions
Interventions (4)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Combined Warning Labels and Tax | Other | — | UNRESOLVED |
| Control | Other | — | UNRESOLVED |
| Tax | Other | — | UNRESOLVED |
| Warning Labels | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (4)
- type
- OTHER
- label
- Control
- description
- Products that contain red meat will not have warning labels or an increase in price.
- interventionNames
- Other: Control
- type
- EXPERIMENTAL
- label
- Warning Labels
- description
- The warning labels are black octagons with white text that appear next to images of products that contain red meat. One label says "WARNING: Eating red meat contributes to colon and rectal cancer" and the other label says "WARNING: Eating red meat harms the environment."
- interventionNames
- Other: Warning Labels
- type
- EXPERIMENTAL
- label
- Tax
- description
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * 18 years or older * Consumes red meat at least once per week. * Responsible for at least 50% of grocery shopping for the household. * Lives in the United States Exclusion Criteria: * Individuals who have participated in research studies from previous aims of this research.
References
Publications (2)
- DERIVEDWillits-Smith A, Taillie LS, Jaacks LM, Frank SM, Grummon AH. Effects of red meat taxes and warning labels on food groups selected in a randomized controlled trial. Int J Behav Nutr Phys Act. 2024 Apr 15;21(1):39. doi: 10.1186/s12966-024-01584-9. PMID 38622655
- DERIVEDTaillie LS, Bercholz M, Prestemon CE, Higgins ICA, Grummon AH, Hall MG, Jaacks LM. Impact of taxes and warning labels on red meat purchases among US consumers: A randomized controlled trial. PLoS Med. 2023 Sep 18;20(9):e1004284. doi: 10.1371/journal.pmed.1004284. eCollection 2023 Sep. PMID 37721952