Search filters


Following the launch of the new cochrane.org website, we are working on restructuring the Community site.
Until this work is finished, some content you find here may still be relevant but some may be outdated.
To find still published content on this site, use the Search box above.

MEDLINE, Embase and CINAHL

Filters are pre-written search strategies designed to retrieve a particular type of record. The Cochrane Highly Sensitive Search Strategy (HSSS) for identifying randomized trials in MEDLINE has been developed and tested and can be added to your search strategy to retrieve RCTs & quasi RCTS. There are also a Cochrane Highly Sensitive Search Strategy for identifying controlled trials in Embase, and a Cochrane CINAHL Plus filter available

See Section 4.4.7 Search filters of the Cochrane Handbook for full details of search filters and Technical Supplement to Chapter 4: Searching for and selecting studies 3.6 Search filters (page 58-63) 

See also the poster from HTAi 2019

Non-Cochrane search filters

Last update: Dec 2021