Re: st: simple question

["E. Paul Wileyto" <epw@mail.med.upenn.edu>]

Maarten's suggestion works perfectly as long as you have no missing data.

P

Maarten buis wrote:
> --- Renuka Metcalfe wrote:
>   
> > I want to create a dummy variable redundism which
> > equals dummy = 1 if the establishment has had any
> > dismissals or redundancies in the past 12 months. I
> > would be grateful, if anyone would let me know if the
> > following is the correct way to do it. There is a
> > debate amongst us at whether it in the second line it
> > should be "|" or "&". I would be grateful, if you
> > would confirm if the following is correct or should it
> > be an "&"
> >
> > ge redundism=.
> > replace redundism=1 if zredundab==1|zdismissa==1
> > replace redundism=0 if zredundab==0|zdismissa==0
> >     
> Once you start doubting these kind of logic puzzles can drive you
> crazy. The safest way to deal with them is to avoid them. In your case
> you can do that by:
>
> ge redundism = 0 if !missing(zredundab,zdismissa)
> replace redundism=1 if zredundab==1|zdismissa==1
>
> 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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--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA  19104-3309

215-746-7147
Fax: 215-746-7140
epw@mail.med.upenn.edu
http://mail.med.upenn.edu/~epw/ 
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