Plot the expected value of perfect information (EVPI) from the output of
ggplot2. Intuitively, the EVPI provides an estimate of the
amount that a decision maker would be willing to pay to collect additional data
and completely eliminate uncertainty.
plot_evpi(x, labels = NULL)
A list of named vectors containing the values and labels of
variables. The elements of each vector are the values of a variable and the
names are the labels. The names of the list are the names of the variables.
See the output returned by
cea() documentation for an example. If there are multiple subgroups,
then a faceted plot is produced with one plot for each subgroup.