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Re: st: margins plot after a poisson estimation


From   "Roger B. Newson" <[email protected]>
To   [email protected]
Subject   Re: st: margins plot after a poisson estimation
Date   Sun, 05 Jan 2014 13:39:34 +0000

Yes, you can use -margins- after -poisson-. And you might like to check out the -punaf- package, downloadable from SSC, which is a wrapper for -margins- and -nlcom-, in case you wanted to estimate between-scenario ratios instead of between-scenario differences. The -punaf- package is discussed at length in an article in the latest Stata Journal (Newson, 2014),and was also discussed at the 2012 UK Stata User Meeting (Newson, 2012).

I hope this helps.

Best wishes

Roger

References

Newson RB. Attributable and unattributable risks and fractions and other scenario comparisons. The Stata Journal 2013; 13(4): 672–698. Purchase from
http://www.stata-journal.com/article.html?article=st0314

Newson RB. Scenario comparisons: How much good can we do? Presented at the 18th UK Stata User Meeting, 13–14 September, 2012. Download from
http://ideas.repec.org/p/boc/usug12/01.html

Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology, Occupational Medicine
and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: [email protected]
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/

Opinions expressed are those of the author, not of the institution.

On 05/01/2014 12:57, James Bernard wrote:
Hi all,

I am new to stata plots. I have worked with -margins and_marginsplot
after -regress-- particularly for a model with quadratic terms.

Now, I have a Poisson model. I woudl like to know if I can continue
the -margins and -margins plot after xtpoisson-- the same way I did
after -regress.

Thanks,
James
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