Imagine you're screening studies and you see data from the same clinical trial spread out across multiple papers. You will include all these studies, but it's important to differentiate studies from reports. Each clinical trial is a study that in this case has multiple reports published. We would want this information reflected in the PRISMA diagram so that it is clear to the reader the number of unique datasets are in the review versus the number of reports.

On the NK site, you can mark a study as a related report, and our software will automatically adjust the PRISMA diagram to reflect this. To mark a paper as a related report, follow these instructions.