Cochrane Handbook for Systematic Reviews of Interventions (official guide to producing Cochrane systematic reviews)
Cochrane Style Resource (designed to help you use a consistent style when copy-editing your Cochrane review)
RevMan web page (documentation and support for the software you use to prepare your Cochrane review)
GRADEpro (GRADEprofiler is the software used to create Summary of Findings (SoF) tables in Cochrane reviews)
Methodolocial expectations of Cochrane Intervention Reviews (MECIR) (provide authors with guidelines on protocol and review conduct and reporting)
CONSORT - CONsolidated Standards of Reporting Trials
PRISMA (formerly QUOROM) - Preferred Reporting Items for Systematic Reviews and Meta Analyses
STROBE - Strengthening Reporting of Observational Studies in Epidemiology
EQUATOR Network - collection of reporting guidelines
Re-publishing reviews in other scientific journals: co-publication agreements
Training - online
Online Learning Modules - If you are a contributor to The Cochrane Collaboration, or thinking about becoming one, this range of resources will meet all your training and support needs.
Training resources provided by other organisations
Editorial Group Policies: Guidance for writing your review or protocol
Information size requirement
The information size is the number of participants required in a meta-analysis to reliably detect an intervention effect. This may be approximated by the sample size that would be needed for a single randomised controlled trial to detect the hypothesised intervention effect. For reviews with binary outcomes, please provide an estimate of the information size in your protocol, by calculating the sample size for a single RCT with 90% power at the 5% significance level. Please specify if your calculation is the total number of participants, or the number of participants required in each intervention group.
This information should be inserted in the Methods section, at the end of the Secondary Outcomes heading and above the heading about searching.
Searching for studies
Authors will receive one set of search results to complete their review. The search for studies will be completed following publication of the protocol. Authors must screen the search results within one month of receipt and inform the editorial team of the number of potentially eligible studies. Based on the number of potentially eligible studies for inclusion into the review, the editorial team and authors will decide on a submission date for the full review.
As a general rule of thumb, the submission date will be based on allocating two weeks per included study. A review with two studies would be expected to be submitted within one month, while a review with 10 studies would be expected within five months. The editorial team is available to answer authors' questions while they complete their review, in order that the submission deadline can be met.
For reviews registered before 2014: It is now Group policy to run a pre-publication search while the review is at peer review so as to keep the search date as close to the publication date as possible. If no studies are found, we only need to edit the search date and numbers throughout the text. If studies are found, they are inserted into Awaiting Classification and a note put in the text to state that they will be included in the update – the publication of the review will not be delayed due to this extra search.