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Re: st: gen & summation


From   Philipp Rehm <philipp.rehm@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: gen & summation
Date   Mon, 05 Nov 2007 22:15:37 -0500

You ask Stata to assign missing values whenever your variable select!=1, or when day1, day2, day3 are all missing.

So, I don't see the problem.

HTH,
Philipp

Ziad El-Khatib wrote:

Hi
very strange result is happening when i try to


gen total=day1+day2+day3 if select==1


STATA gives
(1330 missing values generated)

Although the above variables (day1,2,3) contain numeric values, any tips?


Thank you and best regards
ziad
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