Table 1.

Inclusion and exclusion criteria

	Inclusion	Exclusion
Publication date range	Published between January 2011 and March 2020	Published prior to 2011 or after March 2020
Language	English	Non-English language
Countries	High-income, democratic countries in the Asia–Pacific, Europe (including Scandinavia) and the European Union, North America, Great Britain and/or OECD Cross-country studies such as the ITC Study (including the above countries or pan-Europe)	Nondemocratic countries Low- or middle-income countries Countries outside the regions specified
Type of publication	Original studies or empirical research published in peer-reviewed journals	Letters Editorials Commentary Opinion pieces Essays Reviews Protocols Grey literature Unpublished research
Type of research	Quantitative Qualitative Mixed methods
Study design	Representative cross-sectional survey Nonrepresentative (convenience) cross-sectional survey Longitudinal or serial study Focus group Interviews Media analysis Deliberative study (e.g. citizen jury) Consultations / Delphi processes Other	Experimental studies (e.g., framing effects) Systematic or other type of review Meta-analyses
Population	General population (“public”/citizens) Children or adolescents Adults Staff/employees Students Academics Policy-makers and practitioners Politicians/representatives	Patients Healthcare professionals and clinicians e.g., doctors, pharmacists
Risk factors	Improve diet, food or nutrition, including sugar-sweetened beverages Physical inactivity Alcohol use Overweight and obesity Tobacco use or smoking	Mental health and suicide Illicit drugs Injury prevention not linked to the included risk factors Other public health topics (e.g. abortion, vaccination, sexual health/HIV) Breastfeeding E-cigarettes and tobacco cessation practices
Main outcomes measured by study	Opinion, view, attitude, belief or support regarding primary prevention of lifestyle-related chronic disease, such as laws, regulation, policies, taxation, labelling, restrictions, bans, government intervention, or any other PSE change strategy	Attitudes or beliefs about health, risk factors, diseases, conditions or treatment Opinions or attitudes about secondary or tertiary prevention of chronic disease (such as views on weight loss interventions, smoking cessation/e-cigarettes, and pharmaceutical interventions) Attitudes or beliefs relating to a process evaluation (implementation) of a programme or intervention Health promotion or health education practices and programmes

ITC International Tobacco Control Study, OECD Organisation for Economic Co-operation and Development, PSE policy, system or environment