Representing changes

[hneth]

Related to the issue of visualizing uncertainty, it would be desirable to visualize changes in parameter values. For instance, if a condition's prevalence (prev) or a test's sensitivity (sens) changed by some percentage, how would this affect the entire scenario or some other parameter (e.g., PPV, hi, acc)?

Again, this could easily be expressed by 2 distinct representations (pre- vs. post-change). Are there better ways to integrate the effects of changes into 1 representation (similarly to showing ranges of variability in some types of plots)?