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Re: st: RE: combine data by groups


From   "G. Dai" <dgecon@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: combine data by groups
Date   Wed, 3 Mar 2010 12:12:17 -0800

thanks, Nick.  Get your advice ;-)

On Wed, Mar 3, 2010 at 12:10 PM, G. Dai <dgecon@gmail.com> wrote:

> that is great. thank you, Martin!
> G.
>
>
> On Wed, Mar 3, 2010 at 12:05 PM, Martin Weiss <martin.weiss1@gmx.de>wrote:
>
>>
>> <>
>>
>> *******
>> clear*
>>
>> inp str10 personid  byte(parentsid  momlive dadlive)
>> 001     1      0  .
>> 001     2      .   1
>> 002     1      1  .
>> 002     2        .   1
>> end
>>
>> compress
>> list, noo
>>
>> collapse (firstnm) momlive dadlive, by(personid)
>> list, noo
>> *******
>>
>>
>> HTH
>> Martin
>>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of G. Dai
>> Sent: Mittwoch, 3. März 2010 20:40
>> To: statalist@hsphsun2.harvard.edu
>> Subject: st: combine data by groups
>>
>> hi all, this is an easy question,but somehow I can't figure it.
>> The data is like:
>> personid     parentsid              momlive                   dadlive
>> 001                   1                      0
>>  .
>> 001                   2                      .
>>  1
>> 002                   1                      1
>>  .
>> 002                   2                        .
>>   1
>>
>> where personid and parentsid  are person and her parents' id.
>> when parentid==1, we only record whether mom still live or not (momliv)
>> similarly
>> for parentid==2 and dadlive.
>>
>> I want to change the data set to the following form
>>
>> personid         momlive                   dadlive
>> 001                  0                              1
>> 002                   1                              1
>>
>> what is the best way to do this?
>>
>> thanks,
>> Guang
>>
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>>
>
>

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