If you are updating a Cochrane review, you must use Covidence's Extraction 1 tool to export to RevMan.

Data extractions and quality assessments (Risk of bias) completed using Extraction 1 can be uploaded into RevMan. When you’ve successfully completed this process, all the data you collected in your Covidence review will be added to your RevMan review, and you’ll be ready to proceed with setting up your analyses. For more information please refer to 'How to upload your data to RevMan'.

If you are updating an existing Cochrane review, you can find information in Cochrane's Knowledge base here.