Please note this application is under active development. If you spot any errors or something isn't working, please contact us at evidence.service@wales.nhs.uk.
This map identifies and outlines the evidence base surrounding the prevention (reducing uptake) and de-normalisation (reducing acceptability) of tobacco use, as per areas 2 and 4 of the Welsh Government Tobacco Control Action Plan for Wales.
Date of last search: Aug 2026. Next update due: Aug 2027.
Reviews and guidelines meeting the map’s inclusion criteria have been categorised by population group and intervention type, and displayed digitally on the heat map. Reviews may appear in several categories if they include, for example, research on multiple types of intervention or multiple population groups.
The settings in which relevant interventions included in the reviews have been undertaken have been recorded, along with the relevant outcomes measured in the review. You can use the filter boxes at the top of the map to filter the heat map to only show reviews which include relevant studies conducted in particular settings, or reviews that include studies measuring a particular outcome.
You can click into each box on the heat map to display the list of reviews/guidelines that include evidence within that category, and then further click into each reference to view a summary page for that particular review. The summary pages for each review contain information such as the review aims, findings and conclusions, taken directly from the publication.
We have not conducted any of our own synthesis or interpretation of the findings, but rather have displayed the original authors findings and conclusions so that those viewing the map can see a snapshot of the research, to decide whether they may want to explore the source further. Only review findings relevant to this particular map topic have been categorised, so you may find the reviews cover a broader range of topics, and include additional information that did not meet this map’s inclusion criteria.
Further information about how the maps are developed and the trusted sources we consult can be found in the About section.
Definitions of the population groups, intervention types, settings and outcomes used to categorise evidence in this map are available in our Glossary.
The map is designed to point users in the direction of research evidence that has been synthesised in a way which we know to be methodologically robust, and therefore may be a more reliable base upon which to start thinking about informing decisions. However, our searches are targeted and not exhaustive or comprehensive. Reviews within it should be used as part of a wider strategy for gathering evidence, and not used solely as the basis for decision making, without further interrogation and examination into their applicability for Wales.
As the map only includes secondary evidence synthesis from a limited range of sources, users should note that new or more innovative interventions which have not yet been subject to robust evidence synthesis may also have not been included. The limited range of sources searched make it likely that additional comprehensive searches of bibliographic databases would identify a wider range of reviews. We would advise that additional reviews you identify be critically appraised to confirm their methodological quality.
Please note, you may need to scroll horizontally to see all the categories of evidence in the table.