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

From   Nick Cox <>
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.


On Mon, Feb 25, 2013 at 3:38 PM, Radoslaw Panczak <> 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 <> 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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