The randomization module in REDCap allows you to randomize subjects/records in a project. This can be done in a classic (single event) project, or in a longitudinal (multi-event) project with or without arms. Randomization setup must be done while the project is in Development. Once projects with randomization have been moved to Production, they cannot be moved back to Development at all. Thus, it is encouraged to thoroughly test projects beforehand.
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