See examples in `model_pAMCE`.
decompose_pAMCE(out, effect_name, target_diff)decompose_pAMCE returns `data.frame` showing the decomposition of the difference between the pAMCEs.
An object of class "pAMCE", a result of a call to 'model_pAMCE'.
Effect for which the function decomposes the difference in the pAMCEs. The first element should be a factor name and the second element should be a level name.
Two target profile distributions for which the function compares the pAMCEs. If missing, the function comapres the first target profile distribution and the in-sample profile distribution.