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A Cochrane Review should be updated based on need. Aspects to consider are the currency of the question, the impact and usage of the current version, the availability of additional studies (or additional data for studies already included), and an assessment of the likely change of any newly identified studies or additional data on the current review version; in addition to methodological enhancements that may be required.
Refer to the Updating Classification System to help assess and report on the updating status of an individual Cochrane Review.
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