The Cochrane Database of Systematic Reviews (CDSR) is made up of 12 issues per year, each issue is finalised on the last day of each calendar month. In June 2013, the publication model for the Cochrane Database of Systematic Reviews changes from a monthly publication, to a continuous publishing model where reviews and protocols are published as they are made ready. An issue will "open" from the first day of the calendar month and will "complete" on the last day of the calendar month.
CENTRAL and the About The Cochrane Collaboration database have 12 issues per year and are published on the last working day of the month. If the publication day falls on a Saturday or Sunday, publication will take place on the preceding Friday.
The Database of Abstracts of Reviews of Effects (DARE), Health Technology Assessments (HTA) Database, and NHS Economic Evaluation Database (NHSEED) have four issues per year and are published on the last day of January, April, July and October. If the publication day falls on a Saturday or Sunday, publication will take place on the preceding Friday.
The Cochrane Methodology Register was last updated in July 2012 and will not change until the future of this database has been reviewed.
The Cochrane Library DVD version is release four times per year.
| Issue number | ||||
| Publication date | CDSR (complete) | CENTRAL & About database | DARE, HTA, & NHS EED | DVD version |
| 31 January 2013, Thursday | Issue 1 | Issue 1 | Issue 1 | Issue 1 |
| 28 February 2013, Thursday | Issue 2 | Issue 2 | - | - |
| 28 March 2013, Thursday | Issue 3 | Issue 3 | - | - |
| 30 April 2013, Tuesday | Issue 4 | Issue 4 | Issue 2 | Issue 2 |
| 31 May 2013, Friday | Issue 5 | Issue 5 | - | - |
| 28 June 2013, Friday | - | Issue 6 | - | - |
| 30 June 2013, Sunday | Issue 6 | - | - | - |
| 31 July 2013, Wednesday | Issue 7 | Issue 7 | Issue 3 | Issue 3 |
| 30 August 2013, Friday | - | Issue 8 | - | - |
| 31 August 2013, Saturday | Issue 8 | - | - | - |
| 30 September 2013, Monday | Issue 9 | Issue 9 | - | - |
| 31 October 2013, Thursday | Issue 10 | Issue 10 | Issue 4 | Issue 4 |
| 29 November 2013, Friday | - | Issue 11 | - | - |
| 30 November 2013, Saturday | Issue 11 | - | - | - |
| 31 December 2013, Tuesday | Issue 12 | Issue 12 | - | - |
Cochrane Database of Systematic Reviews
As described above, in June 2013 the publication model for this database is changing from monthly publication to a continuous publication model, where reviews and protocols are published when they are ready. This means that from June 2013 onwards there will be no monthly publication deadlines for this database. All Cochrane Reviews (including protocols and updates) submitted for publication within the calendar month and up to 2200GMT on the last day of the calendar month will be included within the monthly issue.
| Issue number | Deadline | Publication date |
| Issue 1 | 13 December 2012 | 31 January 2013, Thursday |
| Issue 2 | 1 February 2013 | 28 February 2013, Thursday |
| Issue 3 | 1 March 2013 | 28 March 2013, Thursday |
| Issue 4 | 3 April 2013 | 30 April 2013, Tuesday |
| Issue 5 | 2 May 2013 | 31 May 2013, Friday |
| Issue 6 onwards | No deadline: see details above regarding the move to the continuous publishing model | See above |
About The Cochrane Collaboration
To coincide with the move to a continuous publishing model for the Cochrane Database of Systematic Reviews, the publication deadlines and dates for the About The Cochrane Collaboration database will change slightly from May 2013 onwards. Publication of this database will always be on the last day of the calendar month (except if it falls on a Saturday or Sunday, in which case it will be the preceding Friday), and the publication deadline will always be 2200 GMT, on the last day of the previous calendar month.
| Issue number | Deadline | Publication date |
| Issue 1 | 13 December 2012 | 31 January 2013, Thursday |
| Issue 2 | 1 February 2013 | 28 February 2013, Thursday |
| Issue 3 | 1 March 2013 | 28 March 2013, Thursday |
| Issue 4 | 3 April 2013 | 30 April 2013, Tuesday |
| Issue 5 | 2 May 2013 | 31 May 2013, Friday |
| Issue 6 | 31 May 2013 | 28 June 2013, Friday |
| Issue 7 | 30 June 2013 | 31 July 2013, Wednesday |
| Issue 8 | 31 July 2013 | 30 August 2013, Friday |
| Issue 9 | 31 August 2013 | 30 September 2013, Monday |
| Issue 10 | 30 September 2013 | 31 October 2013, Thursday |
| Issue 11 | 31 October 2013 | 29 November 2013, Friday |
| Issue 12 | 30 November 2013 | 31 December 2013, Tuesday |