Data disclosure requirements of the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA) mandate that protocols be shared on designated clinical trial websites. As a visual medium, the
internet is transforming the way these protocols are communicated to a global audience. Medical writers can use data visualisation to represent study schemas in protocols as infographics and in this way help readers to better understand multiple layers of complex information. Study schemas can be designed using standard tools such as Microsoft PowerPoint. Medical writers can use visual elements such as colour, shapes, and icons to portray timelines, dosage regimens, treatment arms, study periods, and procedures. This article describes key concepts in data visualisation and demonstrates how those concepts can be applied in designing creative, effective, and informative study schemas.