Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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 17:28:12 -0400

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
>>> *
>>> *   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/
>> *
>> *   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/
>>
>> *
>> *   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/
>>
>
>
>
> --
> 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/
>
>
> *
> *   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/
>



-- 
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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index