Register of trials

Our register has been developed since 1994 and the Trials Search Coordinator (TSC) will maintain it periodically through:

  • Systematic searches of major databases,
  • Email alerts for update searches,
  • Searching for grey literature,
  • Hand-searching of journals and conference proceedings,
  • Checking references of relevant papers and their citations, and
  • Contacting the researchers, organisations and companies.

This register contains 21,536 reports for 17,524 coded studies (October 22, 2015).

All reports of controlled trials relevant to the scope of this group (whether randomisation is described or implied) are acquired, coded and included into our Study-Based Register of Controlled Trials. This register therefore contains some quasi-random studies and trials that do not make the allocation procedure explicit. Currently it also contains non-clinical studies where physiological outcomes are recorded in preference to clinical measures. It does not contain studies where before and after design has been used.

The register is maintained using MeerKat 1.6 which stores references as studies. The group also uses the Cochrane Register of Studies program to deliver some records to the Cochrane Central Register of Controlled Trials (CENTRAL).

Access to the register by reviewers:

Our register can only be searched by the TSC on behalf of Cochrane Schizophrenia Group authors.

Our list of search strategies is available to download.

We would like to thank a number of colleagues who have helped to develop the register.

If you have any queries about accessing the register please contact Farhad Shokraneh.