Filters are pre-constructed searches designed to search difficult concepts or concepts for which there are many search terms. The filters on this page are designed as 'cut and paste' strings which can be copied into database search boxes. After running a search strategy on resources such as Medline/Pubmed, use any of below validated filters/hedges (developed to balance precision and recall) to limit search to RCT, Systematic Reviews, etc.
![Filter Filter](/uploads/1/2/4/7/124704839/737171095.jpg)
The InterTASC Information Specialists' Sub-Group (ISSG) is the group of information professionals supporting research groups within England and Scotland providing technology assessments to the National Institute for Health and Care Excellence (NICE) and other associated Information Specialists.
The InterTASC Information Specialists' Sub-Group Search Filter Resource is a collaborative venture to identify, assess and test search filters designed to retrieve research by study design or focus. The Search Filters Resource aims to provide easy access to published and unpublished search filters. It also provides information and guidance on how to critically appraise search filters, study design filters in progress and information on the development and use of search filters. Inclusion of a search filter is not an endorsement of its validity or a recommendation.
The editorial team comprises Julie Glanville (York Health Economics Consortium), Carol Lefebvre (LefebvreAssociates Ltd) and Kath Wright (Centre for Reviews and Dissemination).
Weekly update searches are undertaken to identify search filters for the Resource.
The search filters are grouped by study design or focus:
Information on issues relating to search filters can be found at the following pages: - Collections of filters
- Training
How to cite this site.
![Cochrane Rct Filter Cochrane Rct Filter](/uploads/1/2/4/7/124704839/778580513.png)
Update date: New filters added 9th April 2019 - latest scan for new filters 10th June 2019