Literature Searching

Cochrane Gut facilitates literature searching for review authors. Usually, the Cochrane information specialist (CIS) will devise a search strategy with authors during the development of a review's protocol. For each review a search strategy is produced based on relevant clinical terms agreed by the author and the CIS.

The search strategy is constructed using a combination of Mesh terms and free text terms. All reports of randomised controlled trials identified whilst searching will be added to the Group's Specialised Register.

During the development of the review, the CIS executes the search on the following databases,

When appropriate, the following additional resources are searched:

  • AMED
  • PsychINFO
  • Web of Science
  • PDQ
  • Current Contents

Occasionally a review team will have sufficient in-house library or information support. In this case the TSC will work with the in-house team, confirming the searches are of a sufficient quality and supplementing the searching where access to particular resources are limited.

Search Filters for RCTs

How CENTRAL is created

CENTRAL is comprised of records retrieved from PubMed/MEDLINE, Embase,, WHO's ICTRP, KoreaMed, all Cochrane Review Groups' Specialized Registers, and records identified by handsearching various biomedical sources, as described here.

Any other questions or queries: Please contact the Cochrane Community Support Team: