Perceived Effectiveness of Added Sugar Labels

Status Completed

Clinical Trial Summary

This study aims to develop a restaurant menu label to indicate foods and beverage items on restaurant menus that contain high amounts of added sugars and to test its perceived effectiveness.

Clinical Trial Description

Objectives and hypotheses: The goal of this study is to examine how added sugar restaurant menu labels influence U.S. adults' perceptions and reactions. Predictions: In a between-subjects experiment with 3 arms (control label, icon-only added sugars label, and icon plus text added sugars label): 1. Added sugar labels will be perceived as more effective than the control label. 2. The text plus icon label will be perceived as more effective than the icon-only label. 3. A larger proportion of participants who see the added sugar labels will report learning something new than those who see the control label. 4. Added sugar labels will lead participants to more accurately identify restaurant menu items high in added sugars compared to the control label, and the text plus icon label will outperform the icon-only label on this outcome. Additionally, using a within-subjects design: The study will examine which label (control, icon, text plus icon) most discourages wanting to consume menu items high in added sugars. Analyses will compare various icon and text options for the added sugars label to determine which icon and which text variations are perceived as most discouraging for wanting to consume items high in added sugars. The is no hypothesis about which will be perceived as more discouraging. Planned analyses: For predictions 1-2: linear regression model (OLS) regressing PME on indicator variables for experimental condition. The margins command in STATA will be used to conduct pairwise comparisons between each condition (i.e., icon-only vs. icon plus text label). Also, PME will be regressed on an indicator variable combining the added sugar label groups. For predictions 3-4, Poisson regression with robust standard errors will be used to estimate relative probability, regressing each dichotomous outcome on indicator variables for experimental condition. The margins command in STATA will be used to conduct pairwise comparisons between each condition. The outcomes will be regressed on an indicator variable combining the added sugar label groups. If the Poisson regressions do not converge, logistic regression will be used. For the within-subjects comparisons, mixed effects linear models will be used to assess the relationship between condition and rating of label discouragement for consuming items high in added sugars. A critical alpha 0.05 will be used, and statistical tests will be two-tailed. Because this is an initial, exploratory study to help identify the best performing label to use in a larger trial, alpha level will not be adjusted to control for multiple comparisons. If there is evidence of deviations from modeling assumptions required for the parametric tests above, non-parametric sensitivity analyses will be conducted. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04637412
Study type	Interventional
Source	University of California, Davis
Contact
Status	Completed
Phase	N/A
Start date	November 13, 2020
Completion date	December 26, 2020

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT03628885` - An Evaluation of Tailored Messages to Address Parental Questions About HPV Vaccination	N/A
Completed	`NCT04725487` - Community With Immigrants - a Step on the Road to Employment	N/A
Completed	`NCT04373135` - Understanding Community Considerations, Opinions, Values, Impacts, and Decisions for COVID-19	N/A
Completed	`NCT02502292` - Innovative Policies for Healthy Aging	N/A
Completed	`NCT03510585` - Mucociliary Clearance, Airway Inflammation and Nasal Symptoms in Urban Motorcycle-drivers	N/A
Completed	`NCT02615821` - Mental Contrasting Physical Activity Study	N/A
Completed	`NCT02325115` - Validation of the French Warwick-Edinburgh Mental Well-being Scale (WEMWBS)	N/A
Completed	`NCT02682043` - Parental Perspectives of Using Toy Cars on Social Interactions of Preschool Children With Mobility Impairments	N/A
Active, not recruiting	`NCT02471872` - Behavioral Research of Environment and Air Pollution Through Education	N/A
Completed	`NCT05570500` - Comparing the Effect of Online and Conventional Oral Health Education in Egypt	N/A
Completed	`NCT02519946` - On-Line Intervention to Lower Cardiovascular Risk in Pediatric Heart Transplant Patients	N/A
Completed	`NCT02358083` - Attitudes Toward Human Papillomavirus and Influenza Vaccination Among Mothers of Early Adolescents	N/A
Completed	`NCT00479830` - Health and Cancer Issues in the South Asian Community	N/A
Not yet recruiting	`NCT06356285` - Testing New Ways to Name Antimicrobial Resistance	N/A

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.