Video-on-Demand Library

09 November 2022

Mark Baillie led the discussion on how to best visualise the impact and the pattern of missing values in EORTC QLQ-C30 questionnaire data. As an example a 2-arm phase III cancer trial was simulated with some data missing partly randomly, partly not. The visualisations are available on the Wonderful Wednesday blog.

One display grouped the data by the amount of missing data in a line plot showing the relation to the outcome. Two different lasagna plots open the view to individual data of quality of live. The sorting is key to recognise patterns. With Sankey diagrams as small multiples the connection between age and missing data was displayed. The occurrence and frequency of different missing data patterns could be seen in an upset plot.  The next challenge is to display the COVID-19 vaccination adverse event data. See the Wonderful Wednesday homepage for more detail.

Wonderful Wednesdays are brought to you by the Visualisation SIG. The Wonderful Wednesday team includes: Bodo Kirsch, Alexander Schacht, Mark Baillie, Zachary Skrivanek, Lorenz Uhlmann, Rachel Phillips, David Carr, Steve Mallett, Rhys Warham, Lovemore Gakava, Zara Sari, Paolo Eusebi, Greg Ball

 

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