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st: Question About Evaluating Expressions


From   Erika Kociolek <ekociole@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Question About Evaluating Expressions
Date   Thu, 18 Apr 2013 07:03:45 -0700

I am trying to "bin" some data into categories using the code below. I
would like the bin_number variable to look like this:

condition     bin_number
905             900-910

If I run the code below, using condition = 905 as an example, I get
the following:
condition     bin_number
905             900-(900+10)

How do I get Stata to first evaluate what's in the parentheses and
then put the result into the bin_number variable?

Code:
generate bin_number = ""
local u 10

forvalues i = 900(`u')1500{
     replace bin_number = "`i'" + "-" + "(`i' + `u')" if (condition >
`i' & condition <= `i' + `u')
}

Any advice would be greatly appreciated.
Erika
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