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Re: st: contrasts

From   Nikolaos Pandis <>
To   "" <>
Subject   Re: st: contrasts
Date   Mon, 1 Oct 2012 13:02:19 -0700 (PDT)

Dear Jeff,
Thank you for the suggestion.
marginsplot after :
margins r.wiretype,contrast
looks neater compared to:
margins wiretype, pwcompare

From: Jeff Pitblado <>
Sent: Monday, October 1, 2012 7:00 PM
Subject: Re: st: contrasts

Nikolaos Pandis <> asks about plotting pairwise 
comparisons of margins:

> I am running the following command:
> reg force i.wiretype //wiretype has 3 levels
> then I would like to get the contrasts (2 vs. 1, 3 vs.1 and 3 vs.2) and plot via marginsplot.
> margins r.wiretype,contrast
> marginsplot,yline(0)
> I can get the 2 contrasts with the baseline but I cannot get the last 3 vs. 2 contrast within the same command so I can include all 3 contrasts in the marginsplot.

Instead of contrasts of the margins,

    . margins r.wiretype, contrast

Nick can use the -pwcompare- option to get the pairwise comparisons
of the margins,

    . margins wiretype, pwcompare

--Jeff Pitblado
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