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st: Loops and counter


From   Thomas Speidel <thomas@tmbx.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Loops and counter
Date   Fri, 22 Mar 2013 11:56:50 -0600

I am trying to shorten the following expression in Stata:

gen total = ((a1 * b1 * 365.24) + (a2 * b2 * 365.24) + ... + (a14 * b14 * 365.24)) / (z * 365.24)

Where a1-a14, b1-b14, z are all continuous variables.
Typing the expression in full is time consuming. I seem to recall I should be using a loop with a counter to cycle through every value 1-14. However, I am not sure how to do that.

Thanks.

--
Thomas Speidel
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