The guide aims to provide general guidance to reviewers and to establish minimum standards for key information retrieval tasks. Although the guide speaks specifically to individuals planning to conduct a Campbell review, the policies, procedures and guidelines are applicable to anyone interested in implementing information retrieval methods that maximise coverage and minimise bias during the information retrieval process. It will also be useful to librarians who may wish to consult this guide as a reference source.
The guide outlines some general issues in searching for studies; describes the main sources of potential studies; and discusses how to plan the search process, design and carry out search strategies, manage references found during the search process and correctly document and report the search process.
"Searching for studies" is based on chapter 6 of the Cochrane Handbook. The authors would like to thank Carol Lefevbre, Eric Manheimer and Julie Glanville for kind permission to do so.