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Rayyan is a free program designed to assist and speed up the process of conducting a systematic review. It allows multiple reviewers to vote upon uploaded articles for inclusion or exclusion in their study; the voting can also be blinded.
Articles can be uploaded to Rayyan easily; the reviews can also be downloaded so they are available offline. Rayyan is also available as a phone app to facilitate access to your review anywhere, anytime.
Rayyan should be compatible with EndNote (.enw), .RIS, .csv, and PubMed XML files. While you can export directly from databases as .RIS files to be uploaded to Rayyan, we recommend that you upload your files into a citation manager like RefWorks or EndNote first. Benefits of this extra step include:
Follow the above directions to import an RIS file. Now you have your citations in both RefWorks and Rayyan.
Please note that citations aren't fully deleted, just moved to the Deleted folder for Possible duplicates. And the deduplication feature in Rayyan is great, but no system is perfect. Be sure to go through manually to make sure that all duplicates are caught.
When team members are invited to participate, the default is for the Blind to be ON, meaning that each collaborator can review the articles independently without knowing what the other collaborators have decided. This helps to reduce bias when determining what to include/exclude in your review.
Should you want to turn the Blind function off, simply click on "Blind ON". You'll see the button turn red and change to "Blind OFF". To revert to having the Blind function on, just click on the same button.
Rayyan offers three ways to categorize articles: Include, Maybe, and Exclude. You can click on the button or use the following keys on your keyboard:
You can also add a optional reason (or reasons) for exclusion from the pull-down menu to the right of the buttons, or type your own reason into the data entry box and select the yellow text box that appears. It will then become a new option in the pull-down menu for other articles.
You can also use the label box to include little notes. These will appear as blue icons in your list of resources and can be used to add tags or notes to yourself for later.
Rayyan will also keep track of exclusion numbers and display them on the left hand side of the screen in the "Excluded" folder. This will be very useful for your PRISMA diagram at manuscript time, allowing you to track how many were excluded.
While screening is blinded, the numbers shown will be for your screening results only. When blinding is turned off, the total numbers of articles for all screeners will be displayed.
Per the Rayyan developers, you can add the following citation to note your use of the software.
Ouzzani, M., Hammady, H., Fedorowicz, Z., & Elmagarmid, A. (2016). Rayyan — a web and mobile app for systematic reviews. Systematic Reviews, 5(1), 210. https://doi.org/10.1186/s13643-016-0384-4