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Re: st: Re lincom not recognising macros

From   Jennifer Dent <>
Subject   Re: st: Re lincom not recognising macros
Date   Tue, 26 Jun 2012 11:46:59 +0100

Dear Nick

Apologies for the typos.

Re using the 'indirect' solution - I want to run the function several times over several different datasets, within which the values of the (local) variables will change slightly. I'll have a think about which is more efficient, given the solution.

Thank you for your help,


On 26/06/2012 11:21, Nick Cox wrote:
There are no macros (marcos, macors) here.

What you may be seeking is

local var1_prop =  0.46
local var2_prop = 0.54

lincom _b[_cons] + _b[indep1]*`var1_prop' + _b[indepvar2]*`var2_prop'

although I don't see why you would prefer that to your direct
solution, which as you say does work.


On Tue, Jun 26, 2012 at 11:11 AM, Jennifer Dent<>  wrote:

I'm trying to run lincom in stata 12 but I am having trouble when I use a
marco name, rather than a number.

This is what I have:

gen var1_prop =  0.46
gen var2_prop = 0.54
xi:xtmixed depvar indep1 indep2 || randomeffect
lincom _b[_cons] + _b[indep1]*var1_prop + _b[indepvar2]*var2_prop

Error: var1_prop not found

If I replace var1_prop and var2_prop with the actual numbers (i.e. lincom
_b[_cons] + _b[indep1]*0.46 + _b[indepvar2]*0.54), then stata is happy. Is
there a way to force lincom to recognise my numeric macors by name, rather
than to have to find and replace the names with numbers?

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