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
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Perceived message effectiveness (PME)
Timeframe: Post - meal assessment (within 10 minutes)
Label awareness
Timeframe: Post - meal assessment (within 10 minutes)
Salt awareness
Timeframe: Post - meal assessment (within 10 minutes)
Perceived knowledge gain
Timeframe: Post - meal assessment (within 10 minutes)
Perceived influence
Timeframe: Post - meal assessment (within 10 minutes)
Policy support
Timeframe: Post - meal assessment (within 10 minutes)