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RE: st: interactions


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: interactions
Date   Wed, 31 Mar 2010 22:17:15 +0200

<>

Note http://www.stata.com/support/faqs/res/statalist.html#stata then...


HTH
Martin


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of riyadh shamsan
Sent: Mittwoch, 31. März 2010 22:15
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: interactions

it is 10.1

On Wed, Mar 31, 2010 at 7:58 PM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>
> <>
> What`s your -version- of Stata? If other than 11, you are asked to say so!
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of riyadh shamsan
> Sent: Mittwoch, 31. März 2010 20:57
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: interactions
>
> i didn't work!
>
> can't find fvvarlist
>
> On Wed, Mar 31, 2010 at 7:48 PM, Martin Weiss <martin.weiss1@gmx.de>
wrote:
>>
>> <>
>>
>> So if Riyadh wanted domestic cars with very good repair record as the
> reference group:
>>
>>
>> *******
>> sysuse auto, clear
>> reg price weight ib1.rep78#ib0.foreign
>> *******
>>
>>
>> HTH
>> Martin
>>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten buis
>> Sent: Mittwoch, 31. März 2010 20:38
>> To: statalist@hsphsun2.harvard.edu
>> Subject: Re: st: interactions
>>
>> --- On Wed, 31/3/10, riyadh shamsan wrote:
>>> need to make interaction between 2
>>> cat variables each with different
>>> levels. (Ethnicity coded as 1,2,3 and 4) &
>>> (co-morbidity coded as 0,1,2,3)
>>> I need my reference group to be the group with ethnicity 1
>>> & co-morbidiy 0 and compare other combination with this
>>> group
>>
>> The first line of your question got zapped by
>> by the listserver (this sometimes happens on the
>> statalist), so I am infering some of the details
>> of your question.
>>
>> The answer would something like:
>> regress y ib1.ethnicity##ib0.comob
>>
>> See -help fvvarlist-.
>>
>> Hope this helps,
>> Maarten
>>
>> --------------------------
>> Maarten L. Buis
>> Institut fuer Soziologie
>> Universitaet Tuebingen
>> Wilhelmstrasse 36
>> 72074 Tuebingen
>> Germany
>>
>> http://www.maartenbuis.nl
>> --------------------------
>>
>>
>>
>>
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