Abstract
We discuss the analysis and display of data from multistage systems or processes where subjects/items go through a sequence of stages in a certain order. The purpose of collecting such data (in the form of duration times between the various stages) may be to study the pattern of moving between the stages, to compare the progress of subgroups, or to assess the relation between the different duration times. The methods are based on graphical displays of the duration times between the stages. The graphical methods: survival-curves, boxplots, follow-up (FU) plots, and multidimensional scaling (MDS) are adopted to handle the specific features of such data. We illustrate the different methods on the duration times between promotions in an academic ranking system.