I'm trying to calculate and manipulate the predicted probabilities for a
multinomial logit with 3 outcomes for the dependent variable. When using
predict p1 p2 p3 if e(sample), pr the summary stats (ie. the mean) on p1,
p2, and p3 provide what would seem to be a reasonable result for predicted
probabilities, however when I use prvalue to calculate the same thing it
provides a result which would claim that the probability for one outcome is
extremely and unrealistically low. What would explain this difference?
Related to this is there way to examine the changes to predicted
probabilities (ie. increasing by a standard deviation) by using the
predict, pr command rather than a program like prchange.
Thanks
Adam Fremeth
Doctoral Candidate
Strategic Management and Organization
Room # 4-363
Carlson School of Management
University of Minnesota
Tel:(612) 624 3582
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