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Re: st: MAKTAB for svy estimation


From   Nick Winter <nw53@cornell.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: MAKTAB for svy estimation
Date   Tue, 29 Mar 2005 18:32:32 -0500

Hi,

Glad to hear my -mktab- continues to get some use.

Although the syntax implied below might make some sense, the way -mktab- deals with options for the underlying estimation command is by having them appended to the mktab command itself, not to the individual equation specifications. See -whelp mktab-.

So the first example would be:

. mktab (y x1 x2), cmd(svyprobit) log(mylog, replace) subpop(elig1)

Any option that is not a valid -mktab- option is simply appended to the estimation command.

(I note that the implied syntax would allow more flexibility, because there is no way to specify different options across different equations as things stand now; it would also probably be cleaner to implement multiple if conditions similarly, rather than the rather oddly designed mif() option, which was constructed to deal with my very specific initial needs...if I ever revisit the command I'll probably make those changes.)

As for the second question, I don't think that -mktab- can be made to play well with -xi-. The only option would be to run -xi- first, then specify the various interaction variables manually. Something like

. xi i.x1
. mktab (y _Ix1* x2) , cmd(svyprobit) subpop(elig1) log(mylog, replace)

--Nick Winter


At 04:42 PM 3/29/2005 -0500, you wrote:

I guess this question is for Nick Winter.

How can I specify subpop in the MAKTAB syntax?

For example, when I type
. mktab (y x1 x2, subpop(elig1)), cmd(svyprobit) log(mylog, replace)

STATA gives an error message, saying
subpop() invalid
r(198);

Another question is: how do I use XI option in MAKTAB, say, x1 is a
categorical variable, shall I type

. mktab (y i.x1 x2, subpop(elig1)), cmd(xi: svyprobit) log(mylog, replace)??

Thanks,

Wenhui

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--------------------------------------------------------
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
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