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Re: st: post-estimation commands for Poisson

From   Scott Cunningham <[email protected]>
To   [email protected]
Subject   Re: st: post-estimation commands for Poisson
Date   Tue, 18 Apr 2006 11:33:16 -0400

Dear Dr Williams,

I am having trouble downloading this package. I tried -findit spost- and can see where it is, but when I -ssc install spost- it's not allowing me to download it directly.

Thank you for pointing me to the book, though. I'm going to track it down.

On Apr 18, 2006, at 11:33 AM, Richard Williams wrote:

At 09:12 AM 4/18/2006, you wrote:
I know how to interpret Poisson estimated coefficients as
elasticities (or rather, to convert it into elasticities), but I want
to interpret the marginal effect of a change in the regressor on the
count variable itself.  But, interpretation of Poisson coefficients
isn't straightforward.  Is there a post-estimation command, similar
to the -mfx- commands for creating elasticities, that will generate
easy to intepret coefficients of the marginal effect of a change in
the regressors on the count regressand?
My general advice for this sort of thing is to (a) download Long and Freese's -spost- utilities; specifically -spost9- if you are using Stata 9; and (b) read their book:

-prchange- is one of their commands you probably want to look at.

Richard Williams, Notre Dame Dept of Sociology
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