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Re: st: Tobit using svy commands


From   Adam Jayson Sonfield <ajs36@georgetown.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Tobit using svy commands
Date   Tue, 02 Mar 2004 17:20:13 -0500

That seems to do the trick.  Thanks for your help!

----- Original Message -----
From: Nick Winter <nw53@cornell.edu>
Date: Tuesday, March 2, 2004 4:36 pm
Subject: Re: st: Tobit using svy commands

> In the language of the svyintreg help file, your non-zero cases 
> are point 
> data, and your zero cases are left censored.
> 
> So, for non-zero cases, a and b should both equal your DV; for 
> zero cases, 
> b should equal zero and a should equal . (missing).
> 
> To do this:
> 
>         . gen a = DV if DV!=0
>         . gen b = DV
> 
>         . svyintreg a b ...
> 
> --Nick WInter
> 
> 
> 
> 
> At 03:42 PM 3/2/2004 -0500, you wrote:
> >Dear Statalist:
> >
> >I am trying to run a Tobit model regression using the svy 
> commands in 
> >Stata 8, and I'm having trouble figuring out how to do this 
> correctly.>
> >My dependent variable is an expenditures variable; most of the 
> values are 
> >zero, but a third or so are in dollars greater than zero.  A 
> Tobit model 
> >seems like the right choice.  Given the design of the survey, I 
> need to 
> >use the svy commands.
> >
> >As best as I can tell, I should be using the "svyintreg" command. 
> But 
> >that command requires me to use two dependent variables, and I 
> don't 
> >understand what Stata's help file is telling me to do.  Is my 
> real 
> >dependent variable the first or the second of these two 
> variables?  And 
> >what should the other one be?
> >
> >Thank you for your help.
> >
> >--AJS
> >
> >
> >
> >*
> >*   For searches and help try:
> >*   http://www.stata.com/support/faqs/res/findit.html
> >*   http://www.stata.com/support/statalist/faq
> >*   http://www.ats.ucla.edu/stat/stata/
> 
> --------------------------------------------------------
> Nicholas Winter                           607.255.8819 t
> Assistant Professor                       607.255.4530 f
> Department of Government              nw53@cornell.edu e
> 308 White Hall            falcon.arts.cornell.edu/nw53 w
> Cornell University
> Ithaca, NY 14853-4601 
> 
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
> 

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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