CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 6,622 enrolled
Drug / intervention
Control (QR) Labels +4 morebehavioral
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT06678178
NCT06678178N/ACompleted
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Testing Climate Impact Menu Labels Influence on Nutrition Quality of Fast-Food Selections: A Pilot Study

Johns Hopkins Bloomberg School of Public Health·interventional·Posted Nov 7, 2024·Updated Jan 6, 2026

In Brief

A clinical study evaluating Control (QR) Labels, Warning High Climate Impact Labels, and 3 other interventions for Food Selection. Completed, enrolled 6,622 participants across 1 site.

Detailed Summary

The primary objective of this study is to test the relative effects of climate-impact menu label designs on the healthfulness of consumers' fast-food meal choices. Participants will complete a hypothetical online meal ordering task using a survey which emulates the online menu of a burger restaurant chain. Participants will be randomized for exposure to menus featuring one of five labeling conditions. Secondary objectives include examining total greenhouse gas emissions per meal order and, through a post-order survey, perception of labels between the conditions.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsFood Selection
CountriesUnited States
CollaboratorsNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), University of California, Davis, Harvard School of Public Health (HSPH), University of Pennsylvania

Timeline

N/ACompletedFinished
20252026
First PostedNov 7, 2024
Enrollment StartDec 2, 2024
Primary CompletionDec 6, 2024
TodayJul 2, 2026
Enrollment to primary: 4 daysPosted 1.7 years ago

Interventions

Control (QR) Labelsbehavioral

Participants will view a fast-food restaurant menu including main, side, dessert, and drink items. Each menu item will be displayed with an image of the item, name, price, and total calories. For main items only, Control (QR) labels will be displayed beneath each item. Participants will be instructed to select up to 4 menu items for a hypothetical meal order.

Warning High Climate Impact Labelsbehavioral

Participants will view a fast-food restaurant menu including main, side, dessert, and drink items. Each menu item will be displayed with an image of the item, name, price, and total calories. For main items only, Warning High Climate Impact labels will be displayed beneath select items. Participants will be instructed to select up to 4 menu items for a hypothetical meal order.

Traffic Light Labelsbehavioral

Participants will view a fast-food restaurant menu including main, side, dessert, and drink items. Each menu item will be displayed with an image of the item, name, price, and total calories. For main items only, Traffic Light labels will be displayed beneath each item. Participants will be instructed to select up to 4 menu items for a hypothetical meal order.

Climate Grade Labelsbehavioral

Participants will view a fast-food restaurant menu including main, side, dessert, and drink items. Each menu item will be displayed with an image of the item, name, price, and total calories. For main items only, Climate Grade labels will be displayed beneath each item. Participants will be instructed to select up to 4 menu items for a hypothetical meal order.

Numeric Carbon Footprint Labelsbehavioral

Participants will view a fast-food restaurant menu including main, side, dessert, and drink items. Each menu item will be displayed with an image of the item, name, price, and total calories. For main items only, Numeric Carbon Footprint labels will be displayed beneath each item. Participants will be instructed to select up to 4 menu items for a hypothetical meal order.