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st: not sure about my loop results


From   "Nirina F" <fstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: not sure about my loop results
Date   Sat, 20 Dec 2008 10:38:55 -0500

Hello,

I was writing the following loop to get the age of each of the
respondent's sibling.

local n=sibnum
forvalues i=1(1)`n'{
gen agesib`i'= 2006-yearsib`i' if yearsib`i' !=.
}

yearsib is the year of birth of the sibling and 2006 is the year of the survey.

if I -tabulate- sibnum, it varies from 0 to 11 at various frequencies.

However the results of the loop above give me:

agesib1, agesib2, ....till agesib5 only not until agesib11 which is
wierd to me.

I am not sure if I am getting this agesib for each respondent or just
the first respondent.
I have the unique individial identifier and other variables.

Could you please let me know if there is something wrong and how to correct it?

thank you very much,
Nirina
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