The provision of accompanying materials has become increasingly important. Where available, the materials page provides access to a range of supplementary resources related to a study, particularly visual and multimedia resources, which are more common for recent studies.

These may include video files (limited to those hosted on YouTube or Vimeo), links to videos on external websites, infographics, interactive data visualizations, other visual formats, and podcasts.

In addition, the page may offer further supporting materials such as additional or thematic reports, teaching and classroom-related resources, and other study-related materials intended for different audiences.