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Re: st: RE: Create categorical variable based on 'z-score'


From   George Hoffman <ghoffman@mcw.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: RE: Create categorical variable based on 'z-score'
Date   Wed, 26 Nov 2008 12:16:17 -0600

Thanks, nick. Egen std works. Can I nest floor(ceil(x)) to get the desired
...?


> From: Nick Cox <n.j.cox@durham.ac.uk>
> Reply-To: <statalist@hsphsun2.harvard.edu>
> Date: Wed, 26 Nov 2008 17:37:17 +0000
> To: <statalist@hsphsun2.harvard.edu>
> Subject: st: RE: Create categorical variable based on 'z-score'
> 
> Despite various answers, no one mention -egen, std()- followed by
> -floor()- and -ceil(). All existing official Stata.
> 
> Nick
> n.j.cox@durham.ac.uk
> 
> George Hoffman
> 
> Generic problem: I'd like to create categorical variables for a list of
> continuous variables. The categorical variables would be based upon the
> z-score of each variable, such as:
> Z-score of X     catX
> <-2             -3
> -2 ..-1         -2
> -1 .. 0         -1
> 0               0
> 0.. +1          +1
> 1 ..2           +2
>> +2             +3
> 
> If there were a way to z-transform variables, I could do an easy
> recode(catX)
> 
> 
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