Re: st: Tobit using svy commands

[Nick Winter <nw53@cornell.edu>]

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
>
>
>
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