----- Original Message -----
From: "Don Spady" <[email protected]>
To: "Statalist" <[email protected]>
Sent: Thursday, May 08, 2003 6:11 PM
Subject: st: automating a series of equations
> Dear All
>
> I need some help with repeating tasks. I am doing a series of
> logistic regressions and want to automate the task.
>
>
> Say I have an equation
> logistic depvar indepvar sexfm interactionterm if agegrp == X
> lincom indepvar + interaction term (sexfm+indepvar)
> I have about 8 depvars and 25 indepvars and 3 agegrps.
> I want to do all 8 depvars and 25 indepvars at 3 agegrps and do a lincom
> on each outcome.
> it is easy to automate the system using for var "x": if you are not
> doing lincom. Use of lincom introduces a new command and I don't know
> how to
> deal with it.
> How do I do a for var depvar1 ... depvar10 and then do a lincom for each
> equation as it comes up. I think it needs a loop within a loop but I am
> not at all sure how to do that.
>
> Thanks in Advance for your help.
>
>
> Donald Spady
> Dep't of Pediatrics, University of Alberta
> (780) 407-1244
>
> Nature has no reset button.
>
>
I think something like this should work:
levels agegrp , local(levels)
foreach var of varlist dep1 - dep10 {
foreach l of local levels {
logit `var' indepvar1 - indepvar25 if agegrp == `l'
lincom indepvar1 + indepvar2
}
}
Scott
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