st: RE: eform

[Joe Canner <jcanner1@jhmi.edu>]

Claire,

For whatever reason, the author of -metareg- has chosen not to incorporate the -eform- option into the -graph- option.  If you believe this is an important oversight, you should make a suggestion to the author to that effect. 

In any case, it shouldn't be difficult to rectify this situation on your own.  The code from metareg.ado that implements the -graph- option in your particular example isn't very involved:

. tempvar fit
. qui predict `fit'
. local size 1/`v'
. local yti : variable label `y'
. scatter `y' `xvars' [aw=`size'], msymbol(oh)  line `fit' `xvars', sort , legend(off) ytitle( `yti')

Accordingly, you would just need to take the exponential of the dependent variable and of the fitted value and redo the graph.  Something like this:

metareg logHRa eGFR, wsse(SElogHRa) eform graph
predict fit
gen HRa=exp(logHRa)   // or use the actual value of HR if you have it already
gen efit=exp(fit)
gen size=1/SElogHRa
scatter HRa eGFR [aw=size], msymbol(oh)   || line efit eGFR, sort   ||, legend(off) ytitle(HRa)

Whether this is an appropriate way to do meta-analysis of hazard ratios is another story (one which I'm not qualified to comment on).

Regards,
Joe Canner
Johns Hopkins University School of Medicine

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Claire Rushton
Sent: Monday, March 31, 2014 2:19 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: eform

I am using the eform option for a bubble plot using metareg but the y
axis is still showing the log hazard ratio - please advise?

The command i have used is

metareg logHRa eGFR, wsse(SElogHRa) eform graph

The y axis still shows logHRa.

Thanks
Claire
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