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Re: st: predicted probabilities


From   "maartenbuis" <[email protected]>
To   [email protected]
Subject   Re: st: predicted probabilities
Date   Wed, 08 Dec 2004 14:25:33 -0000

--- "Markiewicz, Agnieska" <Agnieszka.Markiewicz@e...> wrote:
> I would like to calculate the predicted probabilities of different
> outcomes after ologit. Since I have couple of explanatory variables, I
> would like to predict the effect on the probability of an outcome
> keeping the other variables constant. 

The command -prgen- in Scott Long and Jeremy Freese's package spost
(-findit spost-) is what you are looking for. 

> Another question is about the odds ratios after ologit. Some of them
> look reasonable but some reach 5000 what seems to me strange. What can
> be the reason of these results?

The odds ratio is e^(parameter), so the value can easily get very
large. Have you looked at the confidence interval? 

Maarten




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