The Cochrane Handbook for Systematic Reviews of Interventions
The Cochrane Handbook provides guidedance to authors on how to conduct a systematic review (including Cochrane Reviews). The Handbook covers all aspects such as preparing a review, searching for studies, assessing risk of bias in included studies, analysing data and undertaking meta-analyses, and interpreting results and drawing conclusions.
The current version 5.1.0 from 2011 is available here.
The updated version 6 of the Handbook will be realeased in 2019. Drafts for each chapteres in the updated version can be found here (Cochrane members only).