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Re: st:the disadvantage of using -xi- to create indicators for categorical variables
From
Amanda Fu <[email protected]>
To
[email protected]
Subject
Re: st:the disadvantage of using -xi- to create indicators for categorical variables
Date
Fri, 17 Dec 2010 17:13:34 -0500
Thank you for the discussion! I had thought it is my problem of not
liking xi. I feel relived.
I will also check factor variables mentioned above.
Amanda
On Fri, Dec 17, 2010 at 11:18 AM, Steven Samuels <[email protected]> wrote:
> -
>
> That default behavior can be changed. See "Summary of controlling the
> omitted dummy" in the -help- for -xi-. But factor variables offer many more
> options for choosing the reference category.
>
>
> Steve
> [email protected]
>
> On Dec 17, 2010, at 2:43 AM, Laura R. wrote:
>
> As far as I know, with -xi- the reference category is chosen
> automatically, wich might be a disadvantage.
>
> Laura
>
> 2010/12/17 Maarten buis <[email protected]>:
>>
>> --- On Thu, 16/12/10, Amanda Fu wrote:
>>>
>>> I am curious: can some one here share how you decide to
>>> decide to use -xi- or not to run a regression with lot
>>> of categorical variables interactions?
>>
>> I only used -xi- for a preliminary analysis when I was in
>> a hurry. Otherwise I prefered to create my own dummies
>> and interactions. Now I am slowly warming to Stata's new
>> factor variable notation, see: -help factor variable-,
>> and I see no use for -xi- at all.
>>
>> --maarten
>>
>> --------------------------
>> Maarten L. Buis
>> Institut fuer Soziologie
>> Universitaet Tuebingen
>> Wilhelmstrasse 36
>> 72074 Tuebingen
>> Germany
>>
>> http://www.maartenbuis.nl
>> --------------------------
>>
>>
>>
>>
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