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Re: st: Weighted summary table in STATA


From   Steve Samuels <sjsamuels@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Weighted summary table in STATA
Date   Tue, 8 Jun 2010 17:28:42 -0400

So, "whether the data are weighted or not" was not correct!

On Tue, Jun 8, 2010 at 5:28 PM, Steve Samuels <sjsamuels@gmail.com> wrote:
> That's because there are only 69 observations with non-missing rep78.
>
> Steve
>
> On Tue, Jun 8, 2010 at 5:16 PM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>>
>> <>
>>
>> " The number of observations stays same at n =69, whether the data are
>> weighted or not"
>>
>>
>>
>> Really? The nobs displayed by -ssc d outreg2- jump to 74 for me w/o the
>> weighting:
>>
>> ***********
>> sysuse auto, clear
>> reg price weight length /*[iw=rep78] */
>> outreg2 using myfile, replace sum
>> ***********
>>
>>
>> HTH
>> Martin
>>
>>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Steve Samuels
>> Sent: Dienstag, 8. Juni 2010 23:12
>> To: statalist@hsphsun2.harvard.edu
>> Subject: Re: st: Weighted summary table in STATA
>>
>> Ali is wrong.  -outreg2- does indeed output  weighted coefficients.
>> The number of observations stays same at n =69, whether the data are
>> weighted or not; perhaps that is why he thinks that the results are
>> not weighted.
>>
>> Steve
>>
>>
>> On Tue, Jun 8, 2010 at 2:36 PM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>>>
>>> <>
>>>
>>> But really Michael, I am not sure whether this is the answer to the
>>> question. Ali seems to be quite happy with his regression, he just wants
>> it
>>> displayed properly.
>>>
>>> So the -sum- option gives him an "unweighted" summary. But Ali, from the
>>> fact that the # of obs is reduced to 69, b/c of 5 missings in "rep78", you
>>> can infer that the weights are indeed respected in the output:
>>>
>>> ***********
>>> sysuse auto, clear
>>> reg price weight length [iw=rep78]
>>> outreg2 using myfile, replace sum
>>> ***********
>>>
>>>
>>> HTH
>>> Martin
>>>
>>> -----Original Message-----
>>> From: owner-statalist@hsphsun2.harvard.edu
>>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Michael N.
>>> Mitchell
>>> Sent: Dienstag, 8. Juni 2010 18:43
>>> To: statalist@hsphsun2.harvard.edu
>>> Subject: Re: st: Weighted summary table in STATA
>>>
>>> Dear Ali
>>>
>>>   First off, you will want to determine the "kind" of weight that you
>> have.
>>> You can see
>>>
>>> http://www.stata.com/help.cgi?pweight
>>>
>>>   which talks about the different kinds of weights.
>>>
>>>   Say that you determine that your weights are -pweights- and your weight
>>> variable is
>>> named -wt-. You can use such weights in an OLS regression like this...
>>>
>>> . regress y x1 x2 x3 [pw=wt]
>>>
>>> I hope this helps,
>>>
>>> Michael N. Mitchell
>>> Data Management Using Stata      -
>> http://www.stata.com/bookstore/dmus.html
>>> A Visual Guide to Stata Graphics -
>> http://www.stata.com/bookstore/vgsg.html
>>> Stata tidbit of the week         - http://www.MichaelNormanMitchell.com
>>>
>>>
>>>
>>> On 2010-06-08 9.07 AM, Ali Delpisheh wrote:
>>>> Hello,
>>>>
>>>> I was able to produce a summary table using OUTREG2. But they are not
>>>> weighted. I am running weighted regressions. How can I make them
>>>> weighted?
>>>>
>>>> Thank you,
>>>> Ali
>>>> *
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>>>
>>
>>
>>
>> --
>> Steven Samuels
>> sjsamuels@gmail.com
>> 18 Cantine's Island
>> Saugerties NY 12477
>> USA
>> Voice: 845-246-0774
>> Fax:    206-202-4783
>>
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
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>>
>>
>> *
>> *   For searches and help try:
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>>
>
>
>
> --
> Steven Samuels
> sjsamuels@gmail.com
> 18 Cantine's Island
> Saugerties NY 12477
> USA
> Voice: 845-246-0774
> Fax:    206-202-4783
>



-- 
Steven Samuels
sjsamuels@gmail.com
18 Cantine's Island
Saugerties NY 12477
USA
Voice: 845-246-0774
Fax:    206-202-4783

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


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