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st: RE: RE: RE: mat procedure won't run in V9


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: RE: mat procedure won't run in V9
Date   Sun, 11 Sep 2005 17:19:40 +0100

Aha. As you will realise, neither Stata's -findit- 
nor Google is yet able to scan your own machine. 

-metareg- as written by David Wilson is not 
an r-class command, although that does not rule 
out its calling other commands that leave results 
of the form r(). Therefore my best advice is 
to insert a -return list- after your call to -metaregW- 
to see what r-class results are in memory at that 
point, because the key question is where r(corr) and r(pr) 
come from. 

Despite what you say, I still don't get the impression
that your code has broken by an upgrade to Stata 9. 

Nick 
n.j.cox@durham.ac.uk 

Garrard, Wendy M.
 
> Sorry about not clarifying the --metaregW-- command. This macro is
> documented in Lipsey & Wilson's (2001) Practical Meta-Analysis, and is
> available on David Wilson's website
> (http://mason.gmu.edu/~dwilsonb/ma.html). Wilson's macro was 
> originally
> named --metareg--, but this conflicts with another widely-used Stata
> macro name, so I changed the name to metaregW for my use.
> 
> The mat / loop procedure ran fine under version 8. Indeed, I used it
> quite a bit to get these special type (weighted random effects
> bivariate) correlations.  I only recently tried to use the procedure
> with version 9, and now it doesn't work properly. 

Nick Cox
 
> This uses a procedure -metaregW-. 
> 
> The Statalist FAQ advises 
> 
> "Say what command(s) you are using. 
> If they are not part of official Stata, say where they come from: the
> STB/SJ, SSC, or other archives." 
> 
> . findit metaregW 
> 
> finds nothing, and a Google search seems to find nothing much except
> your own previous references to
> -metaregW- in Statalist postings, so for I all know it is your own
> program. 
> 
> In general I suspect the problem is nothing to do with Stata 
> 9. You must
> use exactly the same names as -metaregW- to pick up its results.  
> -return list- after -metaregW- will tell you what -metaregW- returns. 

Garrard, Wendy M.
 
> > I am hoping someone can help me get this bit of code (developed in 
> > v.8) to run in v9.
> > The commands are below, and when it works properly, it calls a 
> > "meta-regression" macro and produces a list (matrix) of bivariate 
> > weighted random effects correlations between the effect 
> size and each 
> > variable in the varlist.
> > 
> > This is the first time I've tried to use this do-file in v9, and no 
> > correlations are showing up in the (oblong) matrix.
> > 
> > Any suggestions?  Thanks very much
> > --wg
> > 
> > *********************
> > /*START*/
> > mat res = J(20,2,0)
> > local i 0
> > foreach v of varlist   var1 var2 var3 var4 var5  {
> > 	qui metaregW es_adjRndwz `v' [aw=weight] , model(ml)
> > 	*summarize `v'
> >       local ++i
> >       mat res[`i',1] = r(corr)
> >       mat res[`i',2] = r(pr)
> >       local rl "`rl' `v'"
> > 	          }
> > mat rownames res = `rl'
> > mat colnames res =  Corr(ml)  p-value
> > mat list res, f(%9.3f)
> > /*STOP*/

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