Introductory text
6.3.2.1 What is in The Cochrane Central Register of Controlled Trials (CENTRAL) from MEDLINE?
Box 6.3.a: Cochrane definitions and criteria for randomized controlled trials (RCTs) and controlled clinical trials (CCTs)
Box 6.3.b: US National Library of Medicine 2008 definitions for the Publication Type terms ‘Randomized Controlled Trial’ and ‘Controlled Clinical Trial’
6.3.2.2 What is in The Cochrane Central Register of Controlled Trials (CENTRAL) from EMBASE?
6.3.2.3 What is in The Cochrane Central Register of Controlled Trials (CENTRAL) from other databases and handsearching?
6.3.2.4 What is in The Cochrane Central Register of Controlled Trials (CENTRAL) from Specialized Registers of Cochrane Review Groups and Fields?