Encouraging Healthy and Sustainable Dietary Substitutions

NCT06175026 | Completed Results

• 2 other identifiers: 71737K01HL158608
• Study Type: interventional
• Target: 1,753
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of this study is to examine emerging adults' responses to dietary substitution messages about health, the environment, or both health and the environment.

Conditions

Food Selection

Keywords

health; environment; sustainability; food choices; dietary substitutions; diet; emerging adults

Outcome Measures

Primary Outcomes (1)

• Perceived Message Effectiveness

  Participants will rate each message on perceived message effectiveness (PME) for encouraging participants to make the target dietary substitution. PME will be assessed with 4 items \[the text shown in brackets will be tailored to each substitution\]: 1. How much does this message discourage you from wanting to \[eat beef and pork / drink juice / drink cow's milk / drink sugary drinks\]? 2. How much does this message make \[eating beef and pork, etc.\] seem unpleasant to you? 3. How much does this message make you concerned about the effects of \[eating beef and pork, etc.\]? 4. How much does this message make you want to \[eat chicken or vegetarian options instead of beef and pork, etc.\]? The response options for each item are: 1=Not at all, 2=Very little, 3=Somewhat, 4=Quite a bit, 5=A great deal. Investigators will average responses to these 4 items to create a perceived message effectiveness score. Higher scores indicated higher perceived message effectiveness.

  Survey questions administered after participant viewed each message; overall survey took up to 20 minutes

Study Arms (4)

Health messages

EXPERIMENTAL

Messages shown will be related to the health impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Behavioral: Health messages

Environment messages

EXPERIMENTAL

Messages shown will be related to the environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Behavioral: Environmental messages

Health and environment messages

EXPERIMENTAL

Messages shown will be related to the health and environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Behavioral: Health and environmental messages

Neutral messages

ACTIVE COMPARATOR

Messages shown will be neutral and unrelated to the health or environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Behavioral: Neutral messages

Interventions

Health messages BEHAVIORAL

Participants view messages about the health impacts of certain dietary substitutions.

Health messages

Environmental messages BEHAVIORAL

Participants view messages about the environmental impacts of certain dietary substitutions.

Environment messages

Health and environmental messages BEHAVIORAL

Participants view messages about the health and environmental impacts of certain dietary substitutions.

Health and environment messages

Neutral messages BEHAVIORAL

Participants view neutral messages unrelated to the health and environmental impacts of certain dietary substitutions.

Neutral messages

Eligibility Criteria

• Age: 18 Years - 25 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Age between 18-25 years
• Reside in the United States
• Ability to complete a survey in English

You may not qualify if:

• Older than 25 years; younger than 18 years
• Reside outside of the United States
• Unable to complete a survey in English

Sponsors & Collaborators

• Stanford University: lead
• National Heart, Lung, and Blood Institute (NHLBI): collaborator

Study Sites (1)

Stanford School of Medicine

Palo Alto, California, 94304, United States

Location

MeSH Terms

Conditions

Food Preferences

Interventions

Health

Condition Hierarchy (Ancestors)

Feeding Behavior; Behavior

Intervention Hierarchy (Ancestors)

Population Characteristics

Results Point of Contact

• Title: Dr. Anna H. Grummon, PhD
• Organization: Stanford University

agrummon@stanford.edu

(650) 644-7366

Study Officials

• Anna Grummon, PhD

  Assistant Professor

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Study Record Dates

• First Submitted: November 30, 2023
• First Posted: December 18, 2023
• Study Start: January 22, 2024
• Primary Completion: February 2, 2024
• Study Completion: February 2, 2024
• Last Updated: November 12, 2024
• Results First Posted: November 12, 2024

Record last verified: 2024-11

Data Sharing

• IPD Sharing: Will share
• Shared Documents: SAP, ANALYTIC CODE
• Time Frame: Investigators will post de-identified participant data upon acceptance of any manuscripts associated with the data generated in this study. Investigators will also share the statistical analysis plan and analytic code used for the study. The analysis plan will be uploaded before enrolling participants. The analytic code will be posted upon publication of manuscripts associated with data generated in this study.
• Access Criteria: The data, statistical analysis plan, and analytic code will be publicly available.

Locations

US (1)