Scott Merryman replied to Don Spady
> >
> > 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.
> >
> 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
> }
> }
>
Note that -levels- was added to official Stata,
i.e. version 8, on 16 April 2003.
A -levels7- for Stata 7 remains part
of the -levels- package on SSC.
Alternatively, -vallist-, which requires
only Stata 7, is on SSC with a different
default and indeed more features. -vallist-
is now maintained by Patrick Joly.
Nick
[email protected]
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