[NMusers] Proportional Odds

  Dear All,

    I have been coding a Proportional Odds Emax model for some categorical
PD data. The model seems to be sensitive to initial estimates of the
baseline odds. The SE in the final estimates after a few trials comes to be
30% at worst. Any suggestions on methods to make better guesses for initial
values of baseline odds from the given data?

Another question would be - is it possible to generate confidence bounds on
probabilities using NONMEM for such a model?

Thanks,
Sathej

Received on Mon Jan 31 2011 - 10:31:36 EST