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Re: st: Why do the stcox CI differ when using margins?


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Why do the stcox CI differ when using margins?
Date   Mon, 25 Feb 2013 16:02:15 +0000

Nothing makes that compulsory or the only option. Plotting c.i.s with
-twoway- is easy enough.

Nick

On Mon, Feb 25, 2013 at 3:38 PM, Radoslaw Panczak <r.panczak@gmail.com> wrote:
> Maarten, Nick,
>
> Thank you for your input.
>
> Differences are not large indeed so if there is no other way I might
> have to resort to default strategy of margins & marginsplot.
>
> Best,
> r
>
> On 25 February 2013 16:05, Nick Cox <njcoxstata@gmail.com> wrote:
>> As Maarten implies, if inspection shows that -margins- gives similar
>> intervals to -stcox- then the graph produced by -marginsplot- may be
>> adequate for your purposes  I think you'd have a hard time explaining
>> symmetric intervals and -- especially- negative bounds otherwise, or
>> in any case.
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