Re: st: Re: summary stats at different levels

["Daniel Macneil" <macneida@gse.harvard.edu>]

thanks. i did that, and it gives the std dev within and between, but the means still seem to be 
the same as the individ levels?!
james

On Wed, 13 Feb 2008 14:19:04 -0000
 "Steven Proud" <steven_proud@hotmail.com> wrote:

> xtsum should work for your purposes.  - Gives within between and overall summary stats.
> **********************************************
> ----- Original Message ----- From: "Daniel Macneil" <macneida@gse.harvard.edu>
> To: <statalist@hsphsun2.harvard.edu>
> Sent: Wednesday, February 13, 2008 2:17 PM
> Subject: st: summary stats at different levels
>
>
> > Folks,
> >
> > I have data arranged by 1000 individuals who come from 700 families. How 
> > can i do the basic summary stats on the family level(each family is marked 
> > with code), rather than the individuals? I am using xtlogit for my 
> > analysis, and that works fine, but the simpler task of getting the 
> > descriptive stats at the family level is perplexing me.
> >
> > James
> >
> > On Tue, 12 Feb 2008 19:27:02 -0000
> >  Bidisha Sayema <lexshb@nottingham.ac.uk> wrote:
> >
> > > Dear Satalisters,
> > >
> > > I am using a two sample two stage least square method which essentially
> > > involves getting predicted value of one of the explanatory variables
> > > from one sample and then using that predicted value in another sample to
> > > estimate the final regression. Therefore in my 1st sample I have the
> > > explanatory variable X and instruments Zs and in 2nd sample I don't have
> > > X but I have the dependent variable Y and same instrument set Z. In my
> > > 1st stage I estimate model of X while regressing X on Zs. In the 2nd
> > > stage I use the coefficients of Zs obtained from the 1st stage
> > > regression with the values of Zs available in the 2nd sample to get a
> > > predicted value of Xhat. This Xhat is used as a regressor in my final
> > > regression of Y. However as I am using predicted value of Xhat in my
> > > final regression, I need to correct the standard errors manually. It
> > > would be greatly appreciated if someone inform me how to do it in STATA.
> > >
> > > Regards
> > > Bidisha *ps: I am having problem while receiving mails from statalist 
> > > therefore
> > > it would be appreciated if you also reply to the other address in this
> > > mail. This message has been checked for viruses but the contents of an 
> > > attachment
> > > may still contain software viruses, which could damage your computer 
> > > system:
> > > you are advised to perform your own checks. Email communications with the
> > > University of Nottingham may be monitored as permitted by UK legislation.
> > >
> > >
> > >
> > > *
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> > D. James MacNeil
> > Doctoral Candidate
> > Harvard Graduate School of Education
> > macneida@gse.harvard.edu
> > *
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D. James MacNeil
Doctoral Candidate
Harvard Graduate School of Education
macneida@gse.harvard.edu
*
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