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1 July 2024: The Editorial Publishing & Policy Resource is scheduled to be archived. This page may not contain the most updated version of the information and is being retained for reference until 1 August 2024. Specific redirect information will be provided 

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Please see Updating Classification.


The Updating Classification System (UCS) guides readers as to whether a Cochrane Review is up to date, likely to be updated in future, or does not need updating at the current time. The system can also help Cochrane Review Groups (CRGs) with prioritisation decisions for individual Cochrane Reviews. The UCS follows a decision framework that asks about the usage and currency of the review question, the availability of new studies or information, and how new information would impact on the review; and also whether new methods will make important changes to the review.

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