A vector with the 'lastpage' variable as LimeSurvey stores it (an integer denoting the last page a participant visited, in other words, where they dropped out).
pagenames
Optional: names for each page.
relevantPagenames
Optional: the names of those pages that should be included.
Value
A list with information about the dropout, including ggplots.
Details
This will be described more in detail in a forthcoming publications.