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Re: st: joining variables


From   Laurel Copeland <lacop@umich.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: joining variables
Date   Wed, 19 Feb 2003 16:15:15 -0500 (EST)

gen either=to10la
replace either=to10ra if to10la==.

On Wed, 19 Feb 2003, Sophie Barthel wrote:

>
> Dear List
>
> I have got the following problem:
>
> >From a set of observations I have created a variable to10la for people
> whose left eye was measured and a variable to10ra for people whose right
> eye was measured. Whenever a person appears in the data whose right eye
> was measured to10la displays a missing value and vice versa. All of
> these are meant to be merged into one variable, however I do not seem to
> be able to find out how to do this.
>
> Thank you
>
> Sophie
>
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