
From  "Sergiy Radyakin" <Radyakin@aoek.unihannover.de> 
To  <statalist@hsphsun2.harvard.edu> 
Subject  st: Re: RE: Re: MIMEVersion: 1.0 
Date  Tue, 20 Feb 2007 15:45:10 +0100 
 Sergiy Radyakin wrote:var1 var2 1 . 2 .>3 .. 1>. 2Good idea, and it work in your example, however Stata knows. 3 gen var3=. replace var3=var1 if var1!=. replace var3=var2 if var2!=.
multiple types of missing data (. .a .b .c ...), see
help missing. So it might be safer to use:
replace var3=var1 if var1<.
replace var3=var2 if var2<.
Hope this helps,
Maarten

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/

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