Testing Non-nutritive Sweetener Labels in Chile

NCT ID: NCT06842693

Last Updated: 2025-09-09

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

COMPLETED

Clinical Phase

NA

Total Enrollment

3916 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-07-14

Study Completion Date

2025-08-31

Brief Summary

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The goal of this experiment is to examine the effects of 2 types of non-nutritive sweetener (NNS) warning labels among a sample of Chilean parents. The main questions this experiment aims to answer are:

Do non-nutritive sweetener warning labels improve consumers' ability to identify when a product contains non-nutritive sweeteners?

Do non-nutritive sweetener warning labels impact on consumers' selection of non-nutritive sweetener-sweetened, unsweetened, and/or sugar-sweetened products for their children?

Participants will be randomly assigned to 1 of 3 types of labels and view their assigned label on 3 sets of products. Each set will display 4 similar products: one unsweetened, one sweetened with sugar, one sweetened with non-nutritive sweeteners, and one sweetened with both sugar and non-nutritive sweeteners. For each set, participants will identify which product(s) contain NNS and select the product that they would purchase for their child. Researchers will compare results across label types.

Detailed Description

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Participants will complete an online randomized experiment programmed in Qualtrics. After providing informed consent, participants will be randomly assigned to view 1 of 3 types of labels: a neutral control label, a rectangular label stating "contains non-nutritive sweeteners, not recommended for children" (i.e., Chilean NNS label), or an octagonal label stating "contains non-nutritive sweeteners" (i.e., Colombian NNS label).

Participants will view their assigned label on 4 similar products (one unsweetened, one sweetened with sugar, one sweetened with non-nutritive sweeteners, and one sweetened with both sugar and non-nutritive sweeteners) displayed in random order and complete a task where they identify which product(s) contain non-nutritive sweeteners and select one of the products to purchase for their child. During this task, in all arms, products will also display Chile's current nutrient warning labels when applicable. This task will be repeated 3 times, each time with a different product category (i.e., fruit drinks, yogurts, breakfast cereals), with categories displayed in random order.

After the selection/identification tasks, participants will view their assigned labels on 2 products containing non-nutritive sweeteners (i.e., flavored milk and cereal bar). For each product, participants will rate the perceived message effectiveness of the label and perceived product healthfulness. Lastly, after all product exposures, participants will rate their intentions to limit their child's non-nutritive sweetener consumption.

Conditions

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Diet, Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Control

Group Type ACTIVE_COMPARATOR

Control

Intervention Type BEHAVIORAL

Products carry neutral control label when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Chilean non-nutritive sweetener label

Group Type EXPERIMENTAL

Chilean non-nutritive sweetener label

Intervention Type BEHAVIORAL

Products carry rectangular label that states "contains non-nutritive sweeteners, not recommended for children" when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Colombian non-nutritive sweetener label

Group Type EXPERIMENTAL

Colombian non-nutritive sweetener label

Intervention Type BEHAVIORAL

Products carry octagonal label that states "contains non-nutritive sweeteners " when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Interventions

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Control

Products carry neutral control label when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Intervention Type BEHAVIORAL

Chilean non-nutritive sweetener label

Products carry rectangular label that states "contains non-nutritive sweeteners, not recommended for children" when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Intervention Type BEHAVIORAL

Colombian non-nutritive sweetener label

Products carry octagonal label that states "contains non-nutritive sweeteners " when containing non-nutritive sweeteners. Additionally, to match the current Chilean legislation, products carry an octagonal label that states "high in sugar" when high in added sugars, and/or an octagonal label that states "high in calories" when high in calorie density.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 18 years or older
* Parent or guardian of child between 2-14 years old who has never been diagnosed with diabetes, high blood sugar, pre-diabetes or insulin resistance
* Residing in Chile

Exclusion Criteria

* Less than 18 years old
* Not parent or guardian of child between 2-14 years old who has never been diagnosed with diabetes, high blood sugar, pre-diabetes or insulin resistance
* Not residing in Chile
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Instituto de Nutrición y Tecnología de los Alimentos

OTHER

Sponsor Role collaborator

Bloomberg Philanthropies

OTHER

Sponsor Role collaborator

University of North Carolina, Chapel Hill

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Lindsey Smith Taillie, PhD

Role: PRINCIPAL_INVESTIGATOR

University of North Carolina, Chapel Hill

Locations

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The University of North Carolina at Chapel Hill's Gillings School of Global Public Health

Chapel Hill, North Carolina, United States

Site Status

Countries

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United States

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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24-2205

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

24-2896a

Identifier Type: -

Identifier Source: org_study_id

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