A five-country study of front- and back-of-package nutrition label awareness and use: patterns and correlates from the 2018 International Food Policy Study.

Lower use of mandatory Guideline Daily Amount labels compared with voluntary FOP labelling systems provides support for Mexico's decision to switch to mandatory 'high-in' warning symbols. The patterns of consumer label use and awareness across sociodemographic and knowledge-related characteristics suggest that simple FOP labels may encourage broader use across countries.