Re: st: lincom & svy: mean

[Steven Samuels <sjhsamuels@earthlink.net>]

--

Mathew-
Create dummy variables for your groups and use -svy: reg- to estimate  
the means.  The [ ] syntax is used for multi-response model.  You  
could also use -svy: mean- and access the e(b) matrix, but this  
method is simpler to me.

-Steven

/*******************************/
sysuse auto,clear
svyset _n
tab foreign, gen xfor
sum xfor*
svy: reg mpg xfor*, nocons
lincom xfor1-xfor2
drop xfor*
/*********************************/
On Mar 10, 2008, at 2:03 PM, mathew.stalker@dotecon.com wrote:


> I want to perform a weighted t-test, I use to use:
>
> svyset [pw=myweight]
> svy : mean myvar  , over(mygroup)
> lincom [myvar]1-[myvar]0
>
>
> However, in Stata 10 I now receive the error -  [1] not found after  
> lincom.
> Can anybody tell be how to refer to the two groups in lincom?
>
>
> Thanks in advance.] sy
>
> Mathew
>
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