c Includes conference papers, preprints, and theses. d Includes blog posts, miscellaneous webpages, and video recordings. How did citations overlap across organisations? peripheral studies. Of particular concern was the evidence characteristics, analysis of citation of the report's own advisory panel, suggesting literature. Of the 668 total cited journal articles, there were 617 unique works, with 24 articles field-representative selection. The NASEM report present in multiple sources. Only four citations appeared across all three documents, representing mittee members, but made up considerably less of its overall scientific evidence base (3%, k = 27). literature.65 Pairwise overlaps reveal a further 20 articles found in two of the three reports. patterns. Online Appendix 4C contains the selected, we systematically categorised all information of the overlapping articles. 617 unique peer-reviewed articles. Our analysis was social media and adolescent health, which landscape, or whether some organisations might