Clinical trial NCT05592340: Restaurant Menu Carbon Footprint Labeling
Official title: Impact of Restaurant Menu Carbon Footprint Labeling on Consumers Purchase Intentions and Perceptions
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Food Preferences
Keywords: food labeling
carbon footprint
dietary sustainability
eating
choice behavior
Lead sponsor: University of Pennsylvania
Sponsor class: OTHER
First posted: 2022-10-24
Enrollment: 2389
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Participants will be randomized to see a restaurant menu with one of two labeling schemes: 1) Control: calorie labels only; 2) Carbon footprint labels in addition to calorie labels. Participants will be instructed to select an entree to hypothetically order from the online restaurant menu. We will record participants' selections and match these to nutrition and carbon footprint information.
Primary purpose: PREVENTION

Brief summary: This online randomized clinical trial will test the effects of restaurant menu carbon footprint labels on consumers' choices and perceptions of restaurant menu items.

Detailed description: This online randomized clinical trial will test the effects of restaurant menu carbon footprint labels on consumers' choices and perceptions of restaurant menu items. Participants will be randomized to see a restaurant menu with one of two labeling schemes: 1) Control: calorie labels only; 2) Carbon footprint labels in addition to calorie labels. Participants will be instructed to select an entree to hypothetically order from an online restaurant menu. After selecting, they will be asked to answer questions about their perceptions of menu items and carbon footprint labels.The primary outcome will be the average carbon footprint of menu items chosen from the online menu.

Eligibility criteria: Inclusion Criteria:

* US adults aged 18 or older

Exclusion Criteria:

* Younger than 18
* Non-US

Primary outcomes:
measure: Carbon footprint of selected menu item
timeFrame: The survey will take up to 20 minutes.
Secondary outcomes:
measure: Calories in selected menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived enjoyment of high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived enjoyment of low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived likelihood to order high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived likelihood to order low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived healthfulness of high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived healthfulness of low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Estimated calories in high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Estimated calories in low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived carbon footprint of high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived carbon footprint of low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived lowering of carbon footprint for high-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Perceived lowering of carbon footprint for low-carbon-footprint menu item
timeFrame: The survey will take up to 20 minutes.
measure: Noticing carbon footprint labels
timeFrame: The survey will take up to 20 minutes.
measure: Label influence
timeFrame: The survey will take up to 20 minutes.
measure: Perceived Message Effectiveness of labels
timeFrame: The survey will take up to 20 minutes.
measure: Believability of labels
timeFrame: The survey will take up to 20 minutes.
measure: Learned from labels
timeFrame: The survey will take up to 20 minutes.
measure: Talk about labels with others
timeFrame: The survey will take up to 20 minutes.
measure: Understand the labels
timeFrame: The survey will take up to 20 minutes.
Other outcomes:
Locations:
city: Philadelphia
country: United States
facility: University of Pennsylvania
state: Pennsylvania
Study officials:
affiliation: University of Pennsylvania
name: Christina A Roberto, PhD
role: PRINCIPAL_INVESTIGATOR
References: