NCT06458270

Salt Warning Label Restaurant Study

Perceived Effectiveness of Salt Warning Labels on a UK Restaurant Menu: a Real-world Pilot Experiment

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 465 (actual)
• Sponsor: University of Liverpool · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This between-subjects randomised controlled trial aims to test the effect of a menu featuring salt warning labels on perceived message effectiveness relative to a menu with no labels in a real-world restaurant environment. The study will also act as a pilot experiment for examining the impact of the salt warning label on food choice and subsequent salt intake in real-world conditions. Primary objectives: * To measure the PME of a menu featuring salt warning labels relative to a menu with no labels * To measure label awareness, perceived knowledge gain, and perceived influence of the label on food choice Secondary objectives: * To identify whether there is an effect of the salt warning label on: * Food choice (label/no label) * Total salt selected * Total salt intake * To examine support for the introduction of a salt warning label policy in the UK

Conditions

• Food Selection

Interventions

Type	Name	Description
BEHAVIORAL	Salt warning label	A salt warning label will feature on the restaurant menu next to menu items that are high in salt (\>3g, more than 50% of guideline daily amount \[GDA\] in the UK).

Timeline

• Start date: 2024-06-03
• Primary completion: 2024-09-14
• Completion: 2024-09-14
• First posted: 2024-06-13
• Last updated: 2025-04-02

Locations

1 site across 1 country: United Kingdom