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Re: st:variables named T099`j'


From   John-Paul Ferguson <jpferg@MIT.EDU>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st:variables named T099`j'
Date   Wed, 18 Jun 2008 16:24:33 -0400

Dear Mandy,

I think that trying to manipulate j within the "if" statement on your fourth
line is causing the problem. If you first create another local macro that's
equal to that value and include it, the loop should work correctly. See below:

local j 0802
forvalue i=1/8 {
g age`i'=2006-T099`j'
local k = `j'-1
replace age`i'=2006-T099`j'-1 if T099`k' > 5
local j = `j' + 500
}

I am assuming that the first "T099`j'-1" in the "replace" line is supposed to be
the value of T099`j' minus 1, not the value of T099`k' as defined here. Adjust
accordingly.

Best,

John-Paul Ferguson
MIT

Quoting Man Jia <jia.m@neu.edu>:


Hi all,

In a loop I meant the variable name is T099`j'. But STATA treat only
T099 as the variable name. I have tried [T099`j'],but it didn't work. I
was wondering if anyone could give me some help.

Thanks a lot!

The following are  variable names:
T0990801
T0991301
T0991801
T0992301
T0992801
T0993301
T0993801
T0994301

T0990802
T0991302
T0991802
T0992302
T0992802
T0993302
T0993802
T0994302

I used the following command:
---------------------------------------
local j 0802
forvalue i=1/8 {
  g age`i'=2006-T099`j'
   replace  age`i'=2006-T099`j'-1 if T099[`j'-1]>5
local j = `j' + 500
}
end
--------------------------------------
Stata gives the following error information:
T099 ambiguous abbreviation
r(111);

How should I let STATA know T099`j' or T099[`j'-1] is the variable name
instead of only T099?

Thanks for your kind help!

Mandy Jia
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