Effectiveness of front-of-pack labels in influencing consumer food choices and their intention to purchase pre-packaged foods and non-alcoholic drinks in Tanzania

Comparison of front-of-pack warning labels versus guideline daily amount in influencing consumer food choices and their intention to purchase pre-packaged foods and non-alcoholic drinks in Tanzania

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN36896535

Enrollment

2485

Registered

2026-04-21

Start date

2026-04-01

Completion date

Unknown

Last updated

2026-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Identification of unhealthy food among the general population using front-of-pack labels (FoPL) Nutritional, Metabolic, Endocrine

Interventions

Participants will be randomly assigned to one of three study arms in a 1:1:1 allocation ratio: 1. Warning label intervention 2. Guideline daily amount (GDA) 3. Colored GDA Randomization will be cond

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. Aged 18 years or older 2. Resident of the study area for at least 3 months 3. Regularly purchase pre-packaged food products (at least twice per week) 4. Are the main decision-makers or they have a shared responsibility for food purchases in the house

Exclusion criteria

Exclusion criteria: 1. Work in the food and tobacco industry, marketing, advertising, or healthcare professions due to potential knowledge or professional biases related to FoPL. 2. Have cognitive or visual impairments that may hinder their ability to understand or respond to FoPL.

Countries

Tanzania

Contacts

Public ContactHassan Rusobya

hassan.rusobya@sua.ac.tz+255(0)766772368

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 29, 2026