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NCT Number: NCT07570576

Front-of-package Warning Labels for Sugar Content in Sugar-sweetened Beverages

The goal of this online randomized trial is to examine the effectiveness of Front-of-package (FOP) warning labels for added sugar content on the intent-to-purchases of SSBs in an affluent Asian setting. We hypothesize the FOP warning labels are significantly associated with a reduction of consumers' purchase intention of sugar-sweetened beverages (SSBs).

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Key information

Conditions

Obesity & Overweight Body Weight Nutrition Disorders Nutritional and Metabolic Diseases Obesity Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Hong Kong residents aged 18 years or older and be able to understand either English or Chinese

Exclusion criteria

  • Refuse to provide informed consent
  • Failing an attention check, defined as an incorrect response to a multiple-choice question asking "What month is it currently?",
  • Implausibly short completion times, defined as completing the survey in less than 133 seconds, which corresponds to half of the median completion time observed in pilot data

Treatment and study plan

UK-style traffic light labels

Other

UK-style traffic light labels displaying "HIGH ADDED SUGAR" in a red circle, "MEDIUM ADDED SUGAR" in a yellow circle, "LOW ADDED SUGAR" in a green circle, or "ZERO ADDED SUGAR" in a green circle

Chile-style octagonal labels

Other

Chile-style octagonal labels displaying "HIGH ADDED SUGAR"

text warning labels

Other

text warning labels stating that drinking beverages with added sugar contributes to diabetes and tooth decay, applied to low-, medium-, and high-added-sugar beverages

text-and-graphic warning labels

Other

text-and-graphic warning labels displaying the same message as the text warning label with simple graphics representing diabetes and tooth decay, applied to low-, medium-, and high-added-sugar beverages

teaspoon labels

Other

teaspoon labels showing the number of teaspoons of added sugar per 100 mL, applied to all added-sugar levels

Hong Kong-style labels

Other

Hong Kong-style labels, adapted from the voluntary "Salt / Sugar" Label Scheme for prepackaged food products, displaying "LOW SUGAR" or "NO SUGAR" inside a diamond shape with a tick mark at the bottom

Primary outcomes

  1. Proportion of the participant selects a sugar-sweetened beverage in the beverage choice task

    Time frame: Enrollment

Sponsors and collaborators

Lead sponsor

Chinese University of Hong Kong

Other

Registry information

Official study title

Front-of-package Warning Labels for Sugar Content in Sugar-sweetened Beverages: An Online Randomized Experiment

Important dates

Study start
2026
Primary completion
2027
Study completion
2028
First posted
May 6, 2026
Registry last updated
May 12, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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