Effects of Sugary Drink Warning Labels

NCT ID: NCT03654586

Last Updated: 2021-04-23

Study Results

Results pending

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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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

337 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-07-30

Study Completion Date

2020-03-12

Brief Summary

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The primary objective of this study is to determine to what degree sugary drink warning labels increase consumers' knowledge about the potential health harms of sugary drinks and reduce sugary drink intake. The study is designed to answer three additional questions: 1) Do some warning labels work better than others? 2) What is the effect of warning labels over time? 3) If warning labels influence behavior, is it because they increase knowledge or simply provide a salient reminder that some drinks are less healthy? This study will test the effect of repeated exposure to warning labels on total calories purchased over time and assess whether knowledge or salience better explain label effects.

Detailed Description

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Conditions

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Obesity Diabetes Weight Gain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

There was no answer option for our study design, but factorial is most similar. Participants will be randomly assigned to one of four conditions described below.

1. Calorie label (control) will display a "Calories per Bottle" label on all beverages, not just sugary drinks. This is modeled after the American Beverage Association's current "Clear on Calories" labels.
2. Text warning labels will display the following text on sugary beverages: WARNING: drinking beverages with added sugars contributes to obesity, diabetes, and tooth decay
3. Sugar graphic warning labels will display the same text as "text warning labels" along with graphics depicting the amount of sugar in the beverage
4. Health graphic warning label will display the same text as "text warning labels" along with graphics depicting the potential negative health consequences of over-consuming sugary drinks.
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Calorie label

Calorie label (control) will display a "Calories per Bottle" label on all beverages, not just sugary drinks. This is modeled after the American Beverage Association's current "Clear on Calories" labels.

Group Type ACTIVE_COMPARATOR

Sugary drink warning labels

Intervention Type BEHAVIORAL

The description of each intervention appears in the descriptions of the experimental arms.

Text warning label

Text warning labels will display the following text on sugary beverages: WARNING: drinking beverages with added sugars contributes to obesity, diabetes, and tooth decay

Group Type EXPERIMENTAL

Sugary drink warning labels

Intervention Type BEHAVIORAL

The description of each intervention appears in the descriptions of the experimental arms.

Sugar graphic warning label

Sugar graphic warning labels will display the same text as "text warning labels" along with graphics depicting the amount of sugar in the beverage

Group Type EXPERIMENTAL

Sugary drink warning labels

Intervention Type BEHAVIORAL

The description of each intervention appears in the descriptions of the experimental arms.

Health graphic warning label

Health graphic warning label will display the same text as "text warning labels" along with graphics depicting the potential negative health consequences of over-consuming sugary drinks.

Group Type EXPERIMENTAL

Sugary drink warning labels

Intervention Type BEHAVIORAL

The description of each intervention appears in the descriptions of the experimental arms.

Interventions

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Sugary drink warning labels

The description of each intervention appears in the descriptions of the experimental arms.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* be a primary caregiver of a child under 12 years old;
* be ≥18 years old;
* read and speak English;
* drink sugary drinks at least twelve times per month (\~three times per week) and have a child who does the same
* be the primary grocery shopper for their family;
* have regular internet access.

Exclusion Criteria

* not a primary caregiver of a child under 12 years old
* \<18 years old
* cannot read and speak English
* does not drink sugary drinks at least 12 times per month and have a child who does the same
* is not the primary grocery shopper for their family
* does not have regular internet access
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Drexel University

OTHER

Sponsor Role collaborator

New York University

OTHER

Sponsor Role collaborator

University of Connecticut

OTHER

Sponsor Role collaborator

University of Pennsylvania

OTHER

Sponsor Role lead

Responsible Party

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Christina Roberto, PHD

Assistant Professor of Medical Ethics and Health Policy

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Christina A Roberto, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Pennsylvania

Locations

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Blockley Hall

Philadelphia, Pennsylvania, United States

Site Status

Countries

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United States

Other Identifiers

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1R01DK111558-01A1

Identifier Type: NIH

Identifier Source: org_study_id

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