Re: st: Centering on age for -stcox-

[Michael McCulloch <mm@pinest.org>]

Thanks Maarten.

> --- Michael McCulloch <mm@pinest.org> wrote:
> >  At the bottom of that page, I read that this can be resolved by
> >  subtracting mean age from each subject's age. I wish to do this
> >  within a short program. How would I write a command that subtracts
> >  the mean from age for each observation?
> *--------------- begin example ----------------
> sysuse cancer, clear
> sum age if !missing(studytime, died, drug)
> gen c_age = age - r(mean)
> *---------------- end example -----------------
> (For more on how to use examples I sent to the Statalist, see
> http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
>
>
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
>
> visiting address:
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>
> +31 20 5986715
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
>
>
>      
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