Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
11275 participants
INTERVENTIONAL
2024-12-23
2025-02-13
Brief Summary
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Detailed Description
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The two primary outcomes are (1) grams of added sugar ordered averaged across a fast-food and full-service restaurant menus and (2) grams of added sugar ordered from a café menu. The secondary outcomes are (1) noticing a high added sugar nutrition label and (2) knowledge of items' added sugar content.
For continuous outcomes (e.g., grams of added sugar, knowledge), linear regression models regressing the outcome on an indicator for experimental condition will be used. If the outcomes are not normally distributed, alternative modeling approaches or data transformations will be explored. For dichotomous outcomes (e.g., noticing the added-sugar label), the probability ratio will be modeled using Poisson regression with a robust error variance, regressing the outcome on an indicator for experimental condition.
Exploration of effect modification of the labels on primary outcomes by type 2 diabetes status and sociodemographic variables important for health equity will be conducted using interaction terms and stratified models.
Exploratory process outcomes include (1) selection of at least one item that contains ≥50% of the Daily Value of added sugar and (2) selection of at least one item that contains ≥100% of Daily Value of added sugar. Other exploratory outcomes include the perception that the labels grabbed attention and support for an added sugars warning label policy. Additionally, differences in the primary outcomes between each of the 5 unique conditions will be examined. If there is evidence of interactions, the modeling approach will be modified.
Conditions
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Study Design
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RANDOMIZED
FACTORIAL
PREVENTION
SINGLE
Study Groups
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Control
Participant will order food and beverages from three menus. The menus will not contain any added sugar labels.
No interventions assigned to this group
Large, red, icon-only label, 50% daily value
Participant will order food and beverages from three menus containing labels next to items that contain equal to or higher than half the daily value of added sugar (greater than or equal to 25 grams). The label will be on the right of the item, colored red, icon only design, and height that is 150% of size of the menu text height.
Menu label
Participants will select food items from three restaurant menus, displayed with labels as specified by their assigned group
Large, red, icon-only label, 100% daily value
Participant will order food and beverages from three menus containing labels next to items that contain equal to or higher than the total daily value of added sugar (greater than or equal to 50 grams). The label will be on the right of the item, colored red, icon only design, and height that is 150% of size of the menu text height.
Menu label
Participants will select food items from three restaurant menus, displayed with labels as specified by their assigned group
Small, black, icon-plus-text label, 50% daily value
Participant will order food and beverages from three menus containing labels next to items that contain equal to or higher than half the daily value of added sugar (greater than or equal to 25 grams). The label will be on the right of the item, colored black, icon plus text design, and height that is 100% of size of the menu text height.
Menu label
Participants will select food items from three restaurant menus, displayed with labels as specified by their assigned group
Small, black, icon-plus-text label, 100% daily value
Participant will order food and beverages from three menus containing labels next to items that contain equal to or higher than the total daily value of added sugar (greater than or equal to 50 grams). The label will be on the right of the item, colored black, icon plus text design, and height that is 100% of size of the menu text height.
Menu label
Participants will select food items from three restaurant menus, displayed with labels as specified by their assigned group
Interventions
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Menu label
Participants will select food items from three restaurant menus, displayed with labels as specified by their assigned group
Eligibility Criteria
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Inclusion Criteria
* English-speaking
* U.S. residents
* Have eaten restaurant food at least once in the last month
* Participants will reflect the U.S. Census Bureau's American Community Survey 5-year estimates for sex, race/ethnicity, educational attainment, and age
Exclusion Criteria
* Completing the survey in less than 33% of the median completion time
18 Years
99 Years
ALL
Yes
Sponsors
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University of California, Davis
OTHER
Responsible Party
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Jennifer Falbe
Associate Professor
Principal Investigators
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Jennifer Falbe, ScD, MPH
Role: PRINCIPAL_INVESTIGATOR
University of California, Davis
Locations
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University of California, Davis
Davis, California, United States
Countries
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Other Identifiers
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1641776-8
Identifier Type: -
Identifier Source: org_study_id
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