There are several date fields associated with a Cochrane Review (including protocols and updates). These are described in Table 1. Detailed descriptions of several of the date fields are available in the Cochrane Handbook for Systematic Reviews of Interventions (section 3.3).
Table 1. Overview of date fields in Cochrane Reviews: description, source of date, and where the dates are displayed
|No.||Type of date||Description||Added by who||Displayed?|
|Unpublished CRs (in RevMan)||CDSR: search results page||CDSR: CR header||CDSR: CR body||PubMed|
|Other dates (ie not in ‘What’s new’ in RevMan)||1.||Published online||Date on which a new citation version of a review is published in the CDSR (specifically new and updated reviews)||Publisher||No||Yesa||Yes||No||Yes|
|2.||Assessed as up-to-date||See box below||Editorial team/authors||Yes||No||Yes||Yes||No|
|3.||Date of search||See section on 'Reporting search dates in Cochrane Reviews'||Editorial team/authors||Yes||No||No||No||No|
|4.||Date next stage expected||Protocols = date full review expected; Reviews = date next update expected||Authors||Yes||No||No||No||No|
|5.||Protocol first published||—||Cochrane||Yes||No||No||Yes||No|
|6.||Review first published||—||Cochrane||Yes||No||No||Yes||No|
|7.||Last citation issue||—||Cochrane||Yes||No||No||No||No|
|CDSR: Cochrane Database of Systematic Reviews; CR: Cochrane Review; RevMan: Review Manager.
a Different rules have been used in the past and that the dates in all Cochrane Reviews are being checked to ensure they match this rule.