eAppendix 1: Lasagna plots: A saucy alternative to spaghetti plots

Longitudinal repeated-measures data have often been visualized with spaghetti plots for continuous outcomes. For large datasets, the use of spaghetti plots often leads to the over-plotting and consequential obscuring of trends in the data. This obscuring of trends is primarily due to overlapping of trajectories. Here, we suggest a framework called lasagna plotting that constrains the subject-specific trajectories to prevent overlapping, and utilizes gradients of color to depict the outcome. Dynamic sorting and visualization is demonstrated as an exploratory data analysis tool. The following document serves as an online supplement to “Lasagna plots: A saucy alternative to spaghetti plots.” The ordering is as follows: Additional Examples, Code Snippets, and eFigures.