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Re: st: Problem with wildcards


From   "Dimitriy V. Masterov" <dvmaster@gmail.com>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Problem with wildcards
Date   Mon, 4 Mar 2013 13:48:19 -0800

Lisa,

The reason that does not work is that it evaluates to

replace anypsych = 1 if psych1 psych2 ... psych42 == 1

That is is not valid syntax.

You could use egen (extended generate) to do this:

egen anypsych = rowmax(psych1 - psych42)


DVM

On Mon, Mar 4, 2013 at 1:36 PM, Lisa Cook <hlthsrvcsphd@gmail.com> wrote:
> Hi,
>
> I'm having a problem using wildcards. I'm using Stata 11.2 for Windows.
>
> I have a list of variables: psych1 - psych42. I would like to create a
> new variable called "anypsych" that takes the value of 0 if all the
> variables psych1-psych42 are 0 or missing, and takes the value 1 if
> any of psych1-psych42 are 1.
>
> My code:
>
> gen anypsych = 0
> replace anypsych = 1 if psych* == 1
>
> I get the error "psych* invalid name".
>
> Can anyone tell me why it's an invalid name and how I can achieve this
> objective? I also have a bunch of other variables that I need to do
> the same thing for, so advice on how to approach this would be a huge
> help.
>
> Thanks!
> Lisa
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